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Referencias

References to studies included in this review

Beaulieu‐Boire 2013 {published data only}

Beaulieu‐Boire G, Bourque S, Chagnon F, Chouinard L, Gallo‐Payet N, Lesur O. Music and biological stress dampening in mechanically‐ventilated patients at the intensive care unit ward: A prospective interventional randomized crossover trial. Journal of Critical Care 2013;28(4):442‐50. [PUBMED: 23499420]CENTRAL

Chlan 1995 {published and unpublished data}

Chlan LL. Psychophysiologic responses of mechanically ventilated patients to music: A pilot study. American Journal of Critical Care 1995;4(3):233‐8. [MEDLINE: 18836973]CENTRAL

Chlan 1997 {published and unpublished data}

Chlan LL. Effect of a single music therapy session on anxiety and relaxation for critically ill mechanically ventilated patients. Alternative Therapies in Health and Medicine 1998;4(2):91‐2. CENTRAL
Chlan LL. Effectiveness of a music therapy intervention on relaxation and anxiety for patients receiving ventilatory assistance. Heart and Lung 1998;27(3):169‐76. [MEDLINE: 9622403]CENTRAL
Chlan LL. The relationship of absorption to the effects of music therapy on anxiety and relaxation for mechanically ventilated patients. Unpublished dissertation, University of Minnesota. Minnesota, 1997. CENTRAL

Chlan 2007a {published and unpublished data}

Chlan LL, Engeland WC, Anthony A, Guttormson J. Influence of music on the stress response in patients receiving mechanical ventilatory support: A pilot study. American Journal of Critical Care 2007;16(2):141‐5. [MEDLINE: 17322014]CENTRAL

Chlan 2013 {published data only}

Chlan LL, Engeland WC, Savik K. Does music influence stress in mechanically ventilated patients?. Intensive and Critical Care Nursing 2013;29:121‐7. [PUBMED: 23228527]CENTRAL
Chlan LL, Weinert CR, Heiderscheit A, Tracy MF, Skaar DJ, Guttormson JL, et al. Effects of patient‐directed music intervention on anxiety and sedative exposure in critically ill patients receiving mechanical ventilatory support: A randomized clinical trial. JAMA 2013;309(22):2335‐44. [PUBMED: 23689789]CENTRAL

Conrad 2007 {published and unpublished data}

Conrad C, Niess H, Jauch KW, Bruns CJ, Hartl W, Welker L. Overture for growth hormone: requiem for interleukin‐6?. Critical Care Medicine 2007;35(12):2709‐13. [MEDLINE: 18074473]CENTRAL

Dijkstra 2010 {published and unpublished data}

Dijkstra BM, Gamel C, Bijl JJ, Bots ML, Kesecioglu J. The effects of music on physiological responses and sedation scores in sedated, mechanically ventilated patients. Journal of Clinical Nursing 2010;19(7‐8):1030‐9. [PUBMED: 20492047]CENTRAL

Han 2010 {published data only}

Han L, Li JP, Sit JW, Chung L, Jiao ZY, Ma WG. Effects of music intervention on physiological stress response and anxiety level of mechanically ventilated patients in China: A randomised controlled trial. Journal of Clinical Nursing 2010;19(7‐9):978‐87. CENTRAL

Jaber 2007 {published and unpublished data}

Jaber S, Bahloul H, Guetin S, Chanques G, Sebbane M, Eledjam JJ. Effects of music therapy in intensive care unit without sedation in weaning patients versus non‐ventilated patients [Effets the la musicothérapie en réanimation hors sédation chez des patients en cours de sevrage ventilatoire versus des patients non ventilés]. Annales Françaises d'Anesthésie et de Réanimation 2007;26:30‐8. [MEDLINE: 17085009]CENTRAL

Korhan 2011 {published data only}

Korhan ES, Khorshid L, Uyar M. The effect of music therapy on physiological signs of anxiety in patients receiving mechanical ventilatory support. Journal of Clinical Nursing 2011;20(7‐8):1026‐34. CENTRAL

Lee 2005 {published data only}

Lee OKA, Chung YFL, Chan MF, Chan WM. Music and its effect on the physiological responses and anxiety levels of patients receiving mechanical ventilation: A pilot study. Journal of Clinical Nursing 2005;14:609‐20. [MEDLINE: 15840076]CENTRAL

Phillips 2007 {unpublished data only}

Phillips SD. The effect of music entrainment on respiration of patients on mechanical ventilation in the intensive care unit. Master's thesis, Florida State University. Florida, 2007. CENTRAL

Wong 2001 {published data only}

Wong HLC, Lopez‐Nahas V, Molassiotis A. Effects of music therapy on anxiety in ventilator dependent patients. Heart and Lung 2001;30(5):376‐87. [MEDLINE: 11604980]CENTRAL

Wu 2008 {published data only}

Wu SJ, Chou FH. The effectiveness of music therapy in reducing physiological and psychological anxiety in mechanically ventilated patients [Chinese]. Hu Li Za Zhi 2008;55(5):35‐44. [MEDLINE: 18836973]CENTRAL

References to studies excluded from this review

Almerud 2003 {published data only}

Almerud S. Music therapy‐‐a complementary treatment: for mechanically ventilated intensive care patients. Intensive and Critical Care Nursing 2003;19(1):21‐30. [MEDLINE: 12590891]CENTRAL

Austin 2010 {published data only}

Austin D. The psychophysiological effects of music therapy in intensive care units. Paediatric Nursing 2010;22(3):14‐20. [PUBMED: 20426353]CENTRAL

Bauer 2002 {published data only}

Bauer J. Music therapy reduces anxiety in ventilator patients. Montvale 2002;65(1):22. CENTRAL

Besel 2006 {published data only}

Besel JM. The effects of music therapy on comfort in the mechanically ventilated patients in the intensive care unit. Unpublished Master's Thesis, Montana State University2006. CENTRAL

Burke 1995 {published data only}

Burke M, Walsh J,  Oehler J,  Gingras J. Music therapy following suctioning: four case studies. Neonatal Network 1995;14:41‐9. [MEDLINE: 7565526]CENTRAL

Caine 1991 {published data only}

Caine J. The effects of music on the selected stress behaviors, weight, caloric and formula intake, and length of hospital stay of premature and low birth weight neonates in a newborn intensive care unit. Journal of Music Therapy 1991;28(4):180‐92. [MEDLINE: 10160836]CENTRAL

Chlan 2000 {published data only}

Chlan LL. Music therapy as a nursing intervention for patient supported by mechanical ventilation. AACN Clinical Issues 2000;11(1):128‐38. [MEDLINE: 11040559]CENTRAL

Chlan 2001 {published data only}

Chlan L, Tracy MF, Nelson B, Walker J. Feasibility of a music intervention protocol for patients receiving mechanical ventilatory support. Alternative Therapies in Health & Medicine 2001;7:80‐3. [MEDLINE: 11712475]CENTRAL

Chlan 2006 {published data only}

Chlan LL. Acute effects of music on stress in patients receiving mechanical ventilatory support. American Journal of Critical Care 2006;15(3):324‐46. CENTRAL

Chlan 2011 {published data only}

Chlan L, Savik K. Patterns of anxiety in critically ill patients receiving mechanical ventilatory support. Nursing Research 2011;30(3 Suppl):S50‐7. [PUBMED: 21543962]CENTRAL

Chou 2003 {published data only}

Chou L, Wang R, Chen S, Pai L. Effects of music therapy on oxygen saturation in premature infants receiving endotracheal suctioning. Journal of Nursing Research 2003;11(3):209‐15. [MEDLINE: 14579198]CENTRAL

Davis 2012 {published data only}

Davis T, Jones P. Music therapy: Decreasing anxiety in the ventilated patient. A review of the literature. Dimensions of Critical Care Nursing 2012;31(3):159‐66. [DOI: 10.1097/DCC.0b013e31824dffc6]CENTRAL

Fontaine 1994 {published data only}

Fontaine DK. Nonpharmacologic management of patient distress during mechanical ventilation. Critical Care Clinics 1994;10(4):695‐708. [MEDLINE: 8000922]CENTRAL

Hansen‐Flachen 1994 {published data only}

Hansen‐Flachen J. Improving patient tolerance of mechanical ventilation. Critical Care Clinics 1994;10(4):659‐71. [MEDLINE: 8000919]CENTRAL

Ho 2012 {published data only}

Ho V, Chang S, Olivas R, Almacen C, Dimanlig M, Rodriguez H. Music in critical care setting for clients on mechanical ventilators: a student perspective. Dimensions of Critical Care Nursing 2012;31(6):318‐21. [PUBMED: 23042464]CENTRAL

Hunter 2010 {unpublished data only}

Hunter BC, Oliva R, Sahler OJZ, Gaisser D, Salipante DM, Arezina CH. Music therapy as an adjunctive treatment in the management of stress for patients being weaned from mechanical ventilation. Journal of Music Therapy2010; Vol. 47, issue 3:198‐220. [PUBMED: 21275332]CENTRAL

Iriarte 2003 {published data only}

Iriarte RA. Music therapy effectiveness to decrease anxiety in mechanically ventilated patients [Efectividad de la musicoterapia para promover la relajaction en pacientes sometidos a ventilacion mecanica]. Enfermeria Intensiva 2003;14(2):43‐8. [MEDLINE: 12952774]CENTRAL

Lorch 1994 {published data only}

Lorch CA, Lorch V, Diefendorf AO, Earl PW. Effect of stimulative and sedative music on systolic blood pressure, heart rate, and respiratory rate in premature infants. Journal of Music Therapy 1994;31(2):105‐18. CENTRAL

Nilsson 2011 {published data only}

Nilsson U. Listening to music may relax mechanically ventilated patients, but there are limitations to the quality of the available evidence. Evidence Based Nursing 2011;14(3):66‐7. [PUBMED: 21406537]CENTRAL

Standley 1995 {published data only}

Standley JM, Moore, RS. Therapeutic effects of music and mother's voice on premature infants. Pediatric Nursing 1995;21(6):509‐12. [MEDLINE: 8700604]CENTRAL

Tate 2010 {unpublished data only}

Tate JA. A study of anxiety and agitation events in mechanically ventilated patients. Doctoral Dissertation. Pittsburgh: University of Pittsburgh, 2010. CENTRAL

Twiss 2006 {published and unpublished data}

Twiss E. The effect of music listening on older adults undergoing cardiovascular surgery. Unpublished Master's thesis. Florida: Florida Atlantic University, 2003. CENTRAL
Twiss E,   Seaver J, McCaffrey R. The effect of music listening on older adults undergoing cardiovascular surgery. Nursing in Critical Care 2006;11(5):224‐31. [MEDLINE: 16983853]CENTRAL

Wiens 1995 {published data only}

Wiens ME,  Reimer MA, Guyn HL. Music therapy as a treatment method for improving respiratory muscle strength in patients with advanced multiple sclerosis: a pilot study. Rehabilitation Nursing 1995;24(2):74‐80. [MEDLINE: 10410058]CENTRAL

Arslan 2008

Arslan S, Özer N, Özyurt F. Effect of music on preoperative anxiety in men undergoing urogenital surgery. Australian Journal of Advanced Nursing 2008;26(2):46‐54. [198783205186632]

Bobek 2001

Bobek MB, Hoffman‐Hogg L, Bair N, Slomka J, Mion L, Arroliga AC. Utilization patterns, relative costs, and length of stay following adoption of MICU sedation guidelines. Formulary 2001;36:664‐73.

Boles 2007

Boles JM, Bion J, Connors A, Herridge M, Marsh B, Melot C, et al. Weaning from mechanical ventilation. European Respiratory Journal 2007;29:1033‐56.

Bradt 2011

Bradt J, Dileo C, Grocke D, Magill L. Music interventions for improving psychological and physical outcomes in cancer patients. Cochrane Database of Systematic Reviews 2011, Issue 8. [DOI: 10.1002/14651858.CD006911.pub2]

Bradt 2012

Bradt J. Randomized controlled trials in music therapy: Guidelines for design and implementation. Journal of Music Therapy 2012;49(2):120‐49.

Bradt 2013a

Bradt J, Dileo C, Shim M. Music interventions for preoperative anxiety. Cochrane Database of Systematic Reviews 2013, Issue 6. [DOI: 10.1002/14651858.CD006908.pub2]

Bradt 2013b

Bradt J, Dileo C, Potvin N. Music for stress and anxiety reduction in coronary heart disease patients. Cochrane Database of Systematic Reviews 2013, Issue 12. [DOI: 10.1002/14651858.CD006577.pub3]

Bringman 2009

Bringman H, Giesecke K, Thorne A, Bringman S. Relaxing music as pre‐medication before surgery: A randomised controlled trial. Acta Anaesthesiologica Scandinavica 2009;53(6):759‐64. [PUBMED: 19388893]

Bufalini 2009

Bufalini A. Role of interactive music in oncological pediatric patients undergoing painful procedures. Minerva Pediatrica 2009;61(4):379‐89.

Chlan 1998

Chlan L. Effectiveness of a music therapy intervention on relaxation and anxiety for patients receiving ventilatory assistance. Heart and Lung 1998;27(3):169‐76.

Chlan 2003

Chlan L, Savik K, Weinert C. Development of a shortened state anxiety scale from the Spielberger State‐Trait Anxiety Inventory (STAI) for patients receiving mechanical ventilatory support. Journal of Nursing Measurement 2003;11(3):283‐93.

Chlan 2009

Chlan L, Heiderscheit A. A tool for music preference assessment in critically ill patients receiving mechanical ventilatory support. Music Therapy Perspectives 2009;27(1):42‐7.

Cohen 1988

Cohen J. Statistical power analysis for the behavioral sciences. 2nd Edition. Hillsdale, NJ: Lawrence Earlbaum Associates, 1988.

Deeks 2001

Deeks JJ, Altman DG, Bradburn MJ. Statistical methods for examining heterogeneity and combining results from several studies in meta‐analysis. In: Egger M, Davey Smith G, Altman DG editor(s). Systematic Reviews in Health Care: Meta‐Analysis in Context. 2nd Edition. London: BMJ Publication Group, 2001.

Dileo 1999

Dileo C. A classification model for music and medicine. Applications of Music in Medicine 1999;1:1‐6.

Dileo 2005

Dileo CD, Bradt J. Medical music therapy: A meta‐analysis & agenda for future research. Jeffrey Books, 2005.

Dileo 2007

Dileo C, Bradt J. Music therapy: Applications to Stress Management. In: Lehrer P, Woolfolk R editor(s). Principles and Practice of Stress Management. 3rd Edition. New York: Guilford Press, 2007.

Duke 1999

Duke GJ. Cardiovascular effects of mechanical ventilation. Critical Care and Resuscitation 1999;1:388‐99.

Egerod 2002

Egerod I. Uncertain terms of sedation in ICU. How nurses and physicians manage and describe sedation for mechanically ventilated patients. Journal of Clinical Nursing 2002;11:831‐40. [MEDLINE: 12427190]

Ghetti 2013

Ghetti C. Pediatric intensive care. In: Bradt J editor(s). Guidelines for music therapy practice in pediatric care. Gilsum NH: Barcelona Publishers, 2013:152‐204.

Gillen 2008

Gillen E, Biley F, Allen D. Effects of music listening on adult patients’ pre‐procedural state anxiety in hospital. International Journal of Evidence‐Based Healthcare 2008;6(1):24‐49. [2008‐02471‐003]

Hamel 2001

Hamel WJ. The effects of music intervention on anxiety in patients waiting for cardiac catheterization. Intensive and Critical Care Nursing 2001;17:279‐85. [MEDLINE: 11866419]

Heiderscheit 2011

Heiderscheit A, Chlan L, Donley K. Instituting a music listening intervention for critically ill patients receiving mechanical ventilation: Examplars from two patient cases. Music and Medicine 2011;3(4):239‐46. [10.1177/194386211410981]

Higgins 2002

Higgins JPT, Thompson SG. Quantifying heterogeneity in a meta‐analysis. Statistics in Medicine 2002;21:1539‐58.

Higgins 2011

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Koch 1998

Koch ME, Kain ZN, Ayoub C, Rosenbaum SH. The sedative and analgesic sparing effect of music. Anesthesiology 1998;89(2):300‐6. [MEDLINE: 9710387]

Kollef 1998

Kollef MH, Levy NT, Ahrens TS, Schaiff R, Prentice D, Sherman G. The use of continuous IV sedation is associated with prolongation of mechanical ventilation. Chest 1998;114(2):541‐8. [MEDLINE: 9726743]

Lai 2006

Lai HL, Chen CJ, Peng TC, Chang FM, Chen ML, Huang HY, et al. Randomized controlled trial of music during kangaroo care on perinatal anxiety and preterm infants’ responses. International Journal of Nursing Studies 2006;43:139‐46.

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Ledingham IM, Bion JF, Newman LH, McDonald JC, Wallace PGM. Mortality and morbidity amongst sedated intensive care patients. Resuscitation 1988;16:69‐77. [MEDLINE: 2849180]

Lindgren 2005

Lindgren V, Ames N. Caring for patients on mechanical ventilation: What research indicates is best practice. American Journal of Nursing 2005;105(5):50‐60.

Mandel 2007

Mandel SE, Hanser SB, Secic M, Davis BA. Effects of music therapy on health‐related outcomes in cardiac rehabilitation: a randomized controlled trial. Journal of Music Therapy 2007;44(3):176‐97.

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Mitchell M. Patient anxiety and modern elective surgery: a literature review. Journal of Clinical Nursing 2003;12(6):8‐6‐15.

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Nguyen TN, Nilsson S, Hellstrom A, Bengtson A. Music therapy to reduce pain and anxiety in children with cancer undergoing lumbar puncture: A randomized clinical trial. Journal of Pediatric Oncology Nursing 2010;27(3):146‐55.

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Nilsson U. The anxiety‐ and pain‐reducing effects of music interventions: a systemic review. AORN Journal 2008;87(4):780–807.

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References to other published versions of this review

Bradt 2008

Bradt J, Dileo C, Grocke D. Music interventions for mechanically ventilated patients. Cochrane Database of Systematic Reviews 2008, Issue 1. [DOI: 10.1002/14651858.CD006902]

Bradt 2010

Bradt J, Dileo C, Grocke D. Music interventions for mechanically ventilated patients. Cochrane Database of Systematic Reviews 2010, Issue 12. [DOI: 10.1002/14651858.CD006902.pub2]

Characteristics of studies

Characteristics of included studies [ordered by study ID]

Beaulieu‐Boire 2013

Methods

Cross‐over design

Participants

Adults with diseases necessitating at least 3 days of invasive mechanical ventilation

Diagnoses: respiratory (n = 20), cardiovascular (n = 20), neurological (n = 3), other (n = 6)

Average length of mechanical ventilation before onset of study: group A: 11 days (8 to 17); group B: 12 days (6 to 30)

Ventilator mode: self‐triggering mode

Type of airway: not reported

N randomized: 55

N analysed: 49

Sex: 17 F, 32 M

Age: 62 (3) y

Ethnicity: not reported

Setting: critical care unit

Country: Canada

Interventions

Two study conditions:

1. music condition: listening to music via headphones of an MP3 player

2. placebo sham condition: wearing headphones of an MP3 player with nothing (no music) playing

Music selections provided: Bach (Air from Suite for Orchestra No. 3, Bach (Air for G string), Beethoven (Moonlight Sonata), Beethoven (Pathetic Sonata), Brahms (Lullaby), Chopin (Nocturne in G), Debussy (Clair de Lune), Pachelbel (Canon in D), St‐Saens (The Swan), Tchaïkovsky (Panorama from Sleeping Beauty)

Number of sessions: 4 (2 music, 2 sham)

Length of session: 60 minutes

Categorized as music medicine study

Outcomes

Sedative drug intake (fentanyl, benzodiazepines, hypnotic propofol): post‐test scores

Heart rate (HR), respiratory rate (RR), arterial pressure (AP): cannot be included in meta‐analysis since means and standard deviations (SD) are not reported Information was requested from the authors but was not received

Blood cortisol: change scores

Blood ACTH/cortisol ratio: change scores

Blood prolactin: post‐test scores

Blood leptin: post‐test scores

IL‐6: post‐test scores

C‐reactive protein (CRP): no statistical information

methionine‐enkephalin content (MET‐enkephalin): post‐test scores

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Quote: "A computer‐generated block randomization list was prepared by the investigators" (p. 443)

Allocation concealment (selection bias)

Low risk

Quote: "Randomization was concealed using numbered, opaque sealed envelopes and was revealed by an ICU staff member not involved in the direct care of the randomized patient". (p. 443)

Blinding (performance bias and detection bias)
Objective outcomes

Low risk

Blinding of participants was not possible. Staff who administered music or sham were aware of group assignment but these staff were not involved in direct care of the participant

Blinding of outcome assessment (detection bias)
Objective outcomes

Low risk

Quote: "Each apparatus [MP3 player] was blinded such that the nurse committed in sedative drug tapering was unable to perceive in which group the patient belonged to" (p.444)

Blinding of outcome assessment (detection bias)
Subjective outcomes

Low risk

No subjective outcomes were included in this study

Incomplete outcome data (attrition bias)
All outcomes

Low risk

Attrition rate: 10.9%. Quote: "Of the 55 randomized patients, 6 patients did not complete all of the requirements of the protocol (missing listening sessions, missing blood samples, non‐completion of the 3‐day MV experimental follow‐up), and their data were therefore excluded from the analyses" (p. 445)

Selective reporting (reporting bias)

Low risk

No indication of selective reporting

Free from financial conflict of interest

Low risk

Funded by dedicated grants from CRCEL‐CHUS (PAFI). This trial is registered in ClinicalTrials.gov: NCT00880035. The authors declare no conflict of interest and they were neither funded to select specific MP3 devices nor to select special music pieces.

Chlan 1995

Methods

Two‐arm parallel group design

Participants

Adults necessitating mechanical ventilation

Diagnoses: pulmonary‐related (80%), miscellaneous (20%) (e.g., cancer and kidney transplant)

Average length of mechanical ventilation before onset of study: control group: 5.4 days; music group 14.5 days (due to one patient in music group with a ventilator length of 72 days)

Ventilator mode: not reported

Type of airway: not reported

N randomized to music group: 11

N randomized to control group: 9

N analysed in music group: 11

N analysed in control group: 9

Sex: 7 F, 13 M

Age: 59.95 y

Ethnicity: not reported

Setting: critical care units

Country: USA

Interventions

Two study groups:

  1. Music group: listening to patient‐selected music via headphones

  2. Control group: non‐music, headphone only

Music selections provided: classical selections from Music for Relaxation (Helen Bonny)

Number of sessions: 1

Length of session: 30 minutes

Categorized as music medicine study

Outcomes

Mood (Profile or Mood States): post‐test scores

Heart rate, respiratory rate, systolic blood pressure, diastolic blood pressure, oxygen saturation, airway pressure: change scores from pre‐test to post‐test

Notes

No standard deviations were reported for post‐test scores. Additional data were obtained from the lead author. Change scores were computed by JB.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Flip of coin (personal communication with principle investigator (PI))

Allocation concealment (selection bias)

Low risk

Achieved through use of flip of coin for each patient after consent was obtained

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Blinding of participants was not possible. Personnel were not blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

High risk

The outcome assessor was not blinded (personal communication with PI)

Blinding of outcome assessment (detection bias)
Subjective outcomes

High risk

Self‐report measures were used for subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

No subject loss

Selective reporting (reporting bias)

Low risk

No indication of selective reporting

Free from financial conflict of interest

Low risk

This study was supported in part by a grant, sponsored by the Medtronic Corporation, from the Greater Twin Cities Area Chapter ‐ American Association of Critical Care Nurses.

Chlan 1997

Methods

Two‐arm parallel group design

Participants

Adults necessitating mechanical ventilation

Diagnoses: pulmonary related (68%), cancer (4%), heart transplant (4%), trauma (5%), miscellaneous (19%)

Average length of mechanical ventilation before onset of study: 7.39 days (SD 10.39)

Most common ventilator mode: Synchronized Intermittent Mandatory Ventilation (SIMV) (70%). Other ventilator modes: pressure support (PS), positive end expiratory pressure (PEEP), continuous positive airway pressure (CPAP), assist/control (A/C)

Type of airway: not reported

N randomized to music group: 27

N randomized to control group: 27

N analysed in music group: 27

N analysed in control group: 27

Sex: 59% F, 41% M

Age: 57.1y

Ethnicity: 92.5% white, 5.5% black, and 2% Native American

Setting: critical care units

Country: USA

Interventions

Two study groups:

  1. Music group: listening to patient‐selected music via headphones

  2. Control group: quiet rest (no music)

Music selections provided: classical, new age, country/western, religious, and easy listening.

Number of sessions: 1

Length of session: 30 minutes

Categorized as music medicine study

Outcomes

State anxiety: post‐test scores on the Spielberger State Anxiety Inventory (6‐item version)

Heart rate: post‐test scores (at 30 minutes)

Respiratory rate: post‐test scores (at 30 minutes)

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Quote: "Subjects were randomized using a table of random numbers, to either the control or treatment condition" (p.44)

Allocation concealment (selection bias)

Low risk

Confirmed through personal communication with author

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Blinding of participants was not possible. Personnel were not blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

High risk

Outcome assessors were not blinded (personal communication with PI)

Blinding of outcome assessment (detection bias)
Subjective outcomes

High risk

Self‐report measures were used for subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

Attrition rate: 7%

Selective reporting (reporting bias)

Low risk

No indication of selective reporting

Free from financial conflict of interest

Low risk

Unfunded study

Chlan 2007a

Methods

Two‐arm parallel group design

Participants

Adults receiving mechanical ventilation in critical care unit

Diagnoses: pneumonia (5), respiratory failure (2), shortness of breath (1), ventricular tachycardia (1), and ischaemic bowel (1)

Average length of mechanical ventilation before onset of study: 14.2 (15) days

Ventilator modes: A/C (6), SIMV (2), and pressure‐release (2)

Type of airway: not reported

N randomized to music group: 5

N randomized to control group: 5

N analysed in music group: 5

N analysed in control group: 5

Age: 64.9 (7.8) y

Sex: 6 F, 4 M

Ethnicity: 90% white, 10% black

Setting: critical care unit

Country: USA

Interventions

Two study groups:

1. Music group: listening to patient‐selected music via headphone

2. Control group: rest quietly without headphones

Number of sessions: 1

Length of session: 60 minutes

Categorized as music medicine study

Outcomes

Corticotropin, cortisol, epinephrine and norepinephrine blood samples were obtained from central venous catheter at 4 intervals: baseline, 15 minutes after baseline, 30 minutes after baseline, and 60 minutes after baseline

Heart rate: at baseline, 15 minutes after baseline, 30 minutes after baseline, and 60 minutes after baseline

Notes

The data of this study cannot be pooled with data from other studies in this review because of several confounding variables that likely impacted the outcomes at post‐test: wide variability in mean levels of biomarkers, a very small sample size, administration of intravenous morphine sulphate to 2 control subjects immediately prior to intervention, and 2 subjects in the experimental group needed endotracheal suctioning during the intervention.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Flip of coin (personal communication with PI)

Allocation concealment (selection bias)

Low risk

Achieved through use of flip of coin

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Blinding of participants was not possible. Personnel were not blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

High risk

Outcome assessors were not blinded (personal communication with PI)

Blinding of outcome assessment (detection bias)
Subjective outcomes

Low risk

This study did not include subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

No subject loss

Selective reporting (reporting bias)

Unclear risk

No evidence of selective reporting

Free from financial conflict of interest

Low risk

This study was supported in part by a grant‐in‐aid from the University of Minnesota Graduate School awarded to Dr Linda Chlan and in part by National Science Foundation grant IBN‐0112543 awarded to Dr William Engeland

Chlan 2013

Methods

Three‐arm parallel group design

Participants

Adults receiving acute mechanical ventilatory support because of respiratory failure or distress

Indication for mechanical ventilation: respiratory failure (n = 63, 63, 61, patient‐directed music group, noise‐cancelling headphones group, usual care group respectively), respiratory distress (n=32, 27, 36), pneumonia (n = 7, 5, 7), respiratory arrest (n = 3, 4, 4), airway protection (n = 2, 5, 4), postoperative (n = 2, 3, 4), COPD (n = 7, 4, 0), hypoxia (n = 2, 3, 2), ARDS (n = 1, 1, 0), tachypnoea (n = 1, 0, 1), cardiac arrest (n = 4, 2, 5), pulmonary edema (n = 1, 0, 0), asthma (n = 0, 0,1), and other or missing (n = 1, 5, 0)

Average length of mechanical ventilation before onset of study: patient‐directed music group: 4.5 days (0‐35); noise‐cancelling headphones group: 6.0 days (1‐79), and usual care group: 6.0 days (0 to 38)

Ventilator mode:not reported

Type of airway: not reported

N randomized to patient‐directed music group: 126

N randomized to noise‐cancelling headphones group: 122

N randomized to usual care group: 125

N analysed to music‐directed group: 82 for anxiety analysis, 87 for sedation analysis

N analysed to noise‐cancelling headphones group: 76 for anxiety analysis, 90 for sedation analysis

N analysed to usual care group:83 for anxiety analysis, 89 for sedation analysis

Sex: 193 F, 180 M

Age: 59

Ethnicity: White (86%); other ethnicities not reported

Setting: critical care units at 5 hospitals in Minnesota

Country: USA

Interventions

Three study groups:

  1. Patient‐directed music (PDM) group: listening to patient‐preferred music through headphones that contained a data logger system to capture each PDM session and total daily music listening time

  2. Noise‐canceling headphones (NCH) group: participants were encouraged to wear headphones whenever they wanted to block out the ICU noise or have some quiet time

  3. Usual care group: received standard ICU care

Music selections provided: starter set of 6 CDs were reviewed with the patient by the research nurse to provide for immediate listening upon randomization to the PDM group. The starter set included relaxing music played on piano, harp, guitar, and Native American flute. Within 24 hours of randomization, the music therapist completed a music preference assessment on each PDM patient using a tool designed to assess music preferences of mechanically ventilated patients with a simple yes or no format

Number of sessions: the use of listening to music or noise‐cancelling headphones was patient‐directed. Nursing staff were encouraged to offer the music at least twice per shift but they were reminded that the decision to listen to music was determined by the patient

Length of session: variable, determined by the patient. Average length of music listening was 79.8 (SD = 126) minutes per day. Average length of wearing noise‐cancelling headphones by the NCH group participants was 34 (89.6) minutes per day

Categorized as music medicine study

Outcomes

State anxiety (Visual Analogue Scale ‐ Anxiety), daily sedative drug intensity, daily sedative drug dose frequency: change scores compared to usual care group and mixed models analysis results are reported. Means and SDs per measurement point are not reported

Extubation rate at end of study

Mortality rate

Urinary free cortisol (UFC) (from subsample of patients with intact renal function and not receiving medications known to influence cortisol levels (n = 65)

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Quote: "A computer‐generated random numbers list allocated patients to 1 of 3 groups" (p. 2336)

Allocation concealment (selection bias)

Low risk

Quote: "Group assignment was concealed in an opaque envelope" (p. 2336)

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Blinding of the participants was not possible. Personnel were not blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

Unclear risk

Not reported

Blinding of outcome assessment (detection bias)
Subjective outcomes

High risk

Self‐report measure was used for the subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

High risk

Attrition rates for the PDM, NCH, and usual care group were 34.9%, 37.7%, and 33.6% respectively for anxiety analysis and 27.7%, 22.9%, and 28% for the sedation analysis. Reasons for attrition were: participants were not able to complete anxiety assessments each day due to fatigue, medical condition, state of sedation, inability or refusal to complete assessments, or were off the unit (p. 2338)

Selective reporting (reporting bias)

Low risk

No indication of selective reporting

Free from financial conflict of interest

Low risk

This study was funded by grant R01‐NR009295 from the National Institutes of Health, National Institute of Nursing Research. The study is registered on clinicaltrials.gov: NCT00440700.

Conrad 2007

Methods

Two‐arm parallel group design

Participants

Critically ill adults on mechanical ventilation

Average length of mechanical ventilation before onset of study: not reported

Ventilator modes: not reported

Type of airway: not reported

N randomized to music group: 5

N randomized to control group: 5

N analysed in music group: 5

N analysed in control group: 5

Sex: 1 F, 9 M

Age M: 59.9 y

Ethnicity: not reported

Setting: critical care unit

Country: Germany

Interventions

Two study groups:

  1. Music group: listening to researcher‐selected music via headphones

  2. Control group: no music with headphones

Music selection: "slow‐moving" Mozart piano sonatas selected based on compositional elements of relaxation, according to the author: KV283, Andante; KV311, Andantino con espressione; KV330, Andante cantabile; KV332, Adagio; KV333, Andante cantabile; KV545, Andante; KV570, Adagio; and KV576, Adagio

Number of sessions: 1

Length of session: 60 min

Outcomes

Sedative drug intake, heart rate variability, arterial pressure, serum level of dehydroepiandrosterone (DHEAS), serum concentrations of growth hormone, interleukin‐6: for these variables, means and standard error of the mean (SEM) are given for the control group but not for the music group. Only general statements such as "serum levels of dehydroepiandrosterone remained unchanged during the music intervention" are provided for the music group. Exact P values of between‐group changes are given for mean arterial pressure, growth hormone, interleukin‐6, epinephrine, and DHEAS, but no mean differences are reported

Prolactin, norepinephrine, adrenocorticotropic hormone (ACTH), cortisol, prolactin monomer: only P values are given

Because of the limited data reporting, results of this study are only discussed in narrative form in this review

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

High risk

Alternate assignment (personal communication with PI)

Allocation concealment (selection bias)

High risk

Allocation concealment was not possible because of the use of alternate assignment

Blinding (performance bias and detection bias)
Objective outcomes

Low risk

Participants could not be blinded. Nursing staff who performed outcome assessments were blinded as to whether the patient received music via the headphones

Blinding of outcome assessment (detection bias)
Objective outcomes

Low risk

Outcome assessors were blinded (personal communication with PI)

Blinding of outcome assessment (detection bias)
Subjective outcomes

Low risk

This study did not include subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

No subject loss

Selective reporting (reporting bias)

Low risk

No evidence of selective reporting

Free from financial conflict of interest

Low risk

"The authors did not disclose any conflicts of interest" (p. 2709)

Dijkstra 2010

Methods

Two‐arm parallel group design

Participants

Adults in ICU who are mechanically ventilated

Indications for mechanical ventilation: abdominal surgery (n = 5), pneumonia (n = 4), cardiovascular (n = 3), sepsis (n = 3), heart transplant (n = 1), lung transplant (n = 1), pancreatitis (n = 1), respiratory distress (n = 1), and trauma (n = 1)

Average length of mechanical ventilation before onset of study: 24.6 (3 to 137) days

Ventilator mode: pressure support ventilation or assisted spontaneous breathing

Type of airway: not reported

N randomized to music group: 10

N randomized to control group: 10

N analysed in music group: 10

N analysed in control group:10

Sex: 8 F, 12 M

Age: 52.2 (15.3) y

Ethnicity: not reported

Setting: critical care units

Country: the Netherlands

Interventions

Two study groups:

  1. Music group: listening to patient‐selected music via headphones

  2. Control group: bed rest without headphones

Music selections provided: participants were asked to select from classical music or easy listening music. The types of music offered were classical (Anton Bruckner: Quintet F‐Dur: Adagio and Gustav Mahler: Symphony Nr. 4 G‐Dur: Ruhevoll) and easy listening (film music: Vangelis: 1492, songs without vocals were chosen). Both types of music had slow beats and were relaxing

Number of sessions: 3 sessions spread over 2 days

Length of session: 30 minutes

Categorized as music medicine study

Outcomes

HR, RR, AP, SBP, DBP, sedation scores: change scores

Mortality

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Quote:"Twenty subjects were randomly assigned to either the experimental or control group by the researcher who used a manual method (drawing lots)" (p. 1032)

Allocation concealment (selection bias)

High risk

No allocation concealment was used. Lots were drawn by research team member but not in presence of the participant

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Blinding of the participants was not possible. Personnel were not blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

Low risk

Quote: "During the music intervention or rest periods, data on physiological parameters and sedation scores were recorded by the attending nurse. The nurse was unaware of the background of the study, to limit bias in the registration of parameters and sedation scores

Blinding of outcome assessment (detection bias)
Subjective outcomes

Low risk

This study did not address subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

No participant loss. Missing values are clearly explained by the authors (p. 1034‐5)

Selective reporting (reporting bias)

Low risk

No indication of selective reporting

Free from financial conflict of interest

Low risk

Unfunded research study

Han 2010

Methods

Three‐arm parallel group design

Participants

Adults necessitating mechanical ventilation through synchronized intermittent mandatory ventilation or pressure control mode, or both

Diagnoses: cardiovascular disease (60%), respiratory problems (26%), and digestive system disease (13%)

Average length of mechanical ventilation before onset of study: 3.47 (1 to 161) days

Ventilator mode: most common type of ventilatory support was the synchronized intermittent mandatory ventilation mode (86.9%)

Type of airway: oral endotracheal tube (89.1%), tracheotomy tube (10.9%)

N randomized to music group: 44

N randomized to placebo group: 44

N randomized to control group: 49

N analysed in music group: 44

N analysed in placebo group: 44

N analysed in control group: 49

Sex: 77 F, 60 M

Age: 46.18 y

Ethnicity: 100% Chinese

Setting: critical care units

Country: China

Interventions

Three study groups:

  1. Music group: listening to patient‐selected music via headphones

  2. Placebo group: quiet rest while wearing headphones without music

  3. Control group: quiet rest without music

Music selections provided: participants were asked to select from investigator's selection. There were over 40 choices from four categories of relaxing music, including Western classical music (e.g. Moonlight Sonata, Appassionata), Western light music (e.g. Brahms Lullaby, Ballade pour Adeline), Chinese traditional music (e.g. Butterfly Lovers, Moonlight of Spring River) and Chinese folk songs with lyrics (e.g. Song of Jasmine, Rhythm of a Running Stream). All the musical options were of a relaxing nature containing slow, flowing rhythms that duplicate pulses of 60 to 80 beats per minute (Chlan 1998, 2000) and were familiar to Chinese people

Number of sessions: 1

Length of session: 30 minutes

Categorized as music medicine study

Outcomes

State anxiety (STAI ‐ Chinese version), HR, RR, SBP, DBP, Sa02: change scores

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Quote: "Randomisation was generated from the Randomiser website of the Social Psychology Network (1997)" (p. 980)

Allocation concealment (selection bias)

Unclear risk

Not reported

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Personnel were not blinded. Authors write that "participants were unaware about the design of the study and the groups assigned to them" (p. 980)

Blinding of outcome assessment (detection bias)
Objective outcomes

High risk

Quote: "The researcher remained in the room to record the physiological measures across the three groups during the procedure" (p.980). The researcher knew whether participants were listening to music or not

Blinding of outcome assessment (detection bias)
Subjective outcomes

High risk

Self‐report measure was used for subjective outcome

Incomplete outcome data (attrition bias)
All outcomes

Low risk

No participant loss

Selective reporting (reporting bias)

Low risk

No evidence of selective reporting

Free from financial conflict of interest

Low risk

This research was funded by the Special Departmental Research Grant from the School of Nursing, The Hong Kong Polytechnic University

Jaber 2007

Methods

Cross‐over trial

Participants

Adults on mechanical ventilation

Diagnoses: post‐surgical (9), pancreatitis (2), respiratory issues (2), sepsis (2)

Average length of mechanical ventilation before onset of study: not reported

Ventilator mode: not reported

Type of airway: oral endotracheal tube (87%), tracheostomy (13%)

N analysed in music condition: 15 (ventilated patients only ‐ see notes)

N analysed in control condition: 15 (ventilated patients only ‐ see notes)

Age: 58 (7.8) y

Sex: 7 F, 8 M

Ethnicity: not reported

Setting: critical care unit

Country: France

Interventions

Two conditions:

  1. Music group: listening to patient‐selected music via headphone

  2. Control group: uninterrupted rest without music

Music selection used: a compilation of patient‐preferred music was made by a music therapist according to the following tempo guidelines: the music started at 90 to 100 beats per minute (bpm), then slowed down to 50‐60 bpm. The last 5 minutes, the tempo was increased to 70 to 80 bpm to re‐energize the patient The music therapist did not implement the music intervention sessions

Number of sessions: 1

Length of session: 20 minutes

Categorized as music medicine study

Outcomes

Heart rate, respiratory rate, systolic blood pressure, diastolic blood pressure: at 15 minute intervals

Because the music selections followed a U‐curve (decreasing the tempo and then increasing during the last 5 minutes to re‐energize the patient), the data of the 15‐minute interval was used

The study report does not include standard deviations and precise data for each group. This information was obtained from the lead author.

Notes

This study compared ventilated patients (n = 15) with non‐ventilated patients (n = 15). All patients were randomized to receive music listening followed by a period of rest or to first receive a period of rest followed by a period of music. Only data of the ventilated patients were used in this review. Group‐specific data were obtained from the author.

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Table of random numbers (personal communication with PI)

Allocation concealment (selection bias)

Unclear risk

Not reported

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Blinding of the participants was not possible. Personnel were not blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

Low risk

Outcome assessors were blinded to treatment (personal communication with author)

Blinding of outcome assessment (detection bias)
Subjective outcomes

Unclear risk

This study did not include subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

Attrition rate for entire study sample (see notes) was 14%.

Selective reporting (reporting bias)

Low risk

No evidence of selective reporting

Free from financial conflict of interest

Unclear risk

Funding information is not provided. Conflict of interest statement is lacking

Korhan 2011

Methods

Two‐arm parallel group design

Participants

Adults in ICU receiving mechanical ventilation

Average length of mechanical ventilation before onset of study: 8.32 (SD = 1.37) days within a range of 1 to 30 days

Medical diagnoses: pulmonary (n = 25), heart failure (n = 21), chronic kidney failure (n = 5), pancreatitis (n = 4) and liver failure (n = 5)

Ventilator mode: positive end‐expiratory pressure

Type of airway: not reported

N randomized to music group: 30

N randomized to control group:30

N analysed in music group: not reported

N analysed in control group:not reported

Sex: 28 F, 32 M

Age: 45.31 y

Ethnicity: 100% Turkish

Setting: critical care units

Country: Turkey

Interventions

Two study groups:

  1. Music group: listening to researcher‐selected music via headphones

  2. Control group: standard care group

Music selections provided: Bach’s 19 trio sonatas played by James Galway on flute, 60 to 66 beats per minute

Number of sessions: 1

Length of session: 60 minutes

Categorized as music medicine study

Outcomes

HR, RR, SBP, DBP, SaO2: only P values and visual graphs are reported. We contacted the authors to obtain means and SDs but no reply was received

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Unclear risk

Not reported. We contacted the authors for additional information but no reply was received

Allocation concealment (selection bias)

Unclear risk

Not reported. We contacted the authors for additional information but no reply was received

Blinding (performance bias and detection bias)
Objective outcomes

Unclear risk

Not reported. We contacted the authors for additional information but no reply was received

Blinding of outcome assessment (detection bias)
Objective outcomes

High risk

Quote: "The research nurse was not blinded as to the allocation of each group" (p.1033). All physiological responses were recorded from a monitoring device by the research nurse

Blinding of outcome assessment (detection bias)
Subjective outcomes

Low risk

This study did not include subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Unclear risk

Not reported. We contacted the authors for additional information but no reply was received

Selective reporting (reporting bias)

Low risk

No evidence of selective reporting

Free from financial conflict of interest

Low risk

This study was funded by Ege University Research Foundation

Lee 2005

Methods

Two‐arm parallel group design

Participants

Adults on mechanical ventilation

Diagnoses: respiratory problems (39%) and postoperative surgical problems (34.3%)

Average length of mechanical ventilation before onset of study: 2.5 (3.3) days

Most frequently used ventilator mode: pressure support (PS) (89%)

Most common type of airway: oral endotracheal tube (91%). Other: nasal (4%) and tracheostomy (4%)

Ethnicity: Chinese

N randomized to music group: unclear

N randomized to control group: unclear

N analysed in music group: 32

N analysed in control group: 32

Sex: 18 F, 46 M

Age: 69.4 y

Ethnicity: 100% Chinese

Setting: critical care unit

Country: China

Interventions

Two study groups:

  1. Music group: listening to patient‐selected music via headphones

  2. Control group: quiet rest with headphones

Music selections provided: Chinese classical music, religious music (Buddhist and Christian), Western classical music and music with "natural sounds"

Number of sessions: 1

Length of session: 30 minutes

Categorized as music medicine study

Outcomes

State anxiety: change scores from pre‐test to post‐test on the Spielberger State Anxiety Inventory (6‐item version)

Heart rate: change scores from pre‐test to post‐test

Respiratory rate: change scores from pre‐test to post‐test

Systolic blood pressure: change scores from pre‐test to post‐test

Diastolic blood pressure: change scores from pre‐test to post‐test

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Quote: "Subjects were randomly assigned to either experimental or control group by having a case nurse draw lots" (p. 613)

Allocation concealment (selection bias)

Low risk

Achieved through use of draw of lots by independent group assigner after consent was obtained

Blinding (performance bias and detection bias)
Objective outcomes

Low risk

Participants could not be blinded. Personnel were blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

Low risk

Quote: "The researcher was blind to the treatment condition of both groups during the whole period of data collection" (p. 614)

Blinding of outcome assessment (detection bias)
Subjective outcomes

High risk

Self‐report measure was used for subjective outcome

Incomplete outcome data (attrition bias)
All outcomes

Unclear risk

It is unclear whether number of participants analysed equals the number of participants recruited

Selective reporting (reporting bias)

Low risk

No evidence of selective reporting

Free from financial conflict of interest

Unclear risk

Funding information is not provided. Conflict of interest statement is lacking

Phillips 2007

Methods

Randomized controlled trial

Randomization method: alternate assignment

Allocation concealment: inadequate

Blinding: unclear

Design: repeated measures control group design

Intention to treat: adequate

Participants

Adults with various diagnoses on mechanical ventilation: cardiac problems (56%), pulmonary issues (21%), traumatic injury (8%), other (15%)

Average length of mechanical ventilation before onset of study: not reported

Ventilator mode: not reported

Type of airway: no tracheostomy

N randomized to music group (medical): 10

N randomized to music group (cardiac): 10

N randomized to control group (medical): 10

N randomized to control group (cardiac): 10

N analysed in music group (medical): 10

N analysed in music group (cardiac): 9 (not included in this review)

N analysed in control group (medical): 10

N analysed in control group (cardiac): 10 (not included in this review)

Sex: 10 F, 10 M (for medical, non‐cardiac patients)

Age: 57.5 y

Ethnicity: not reported

Setting: critical care unit

Country: USA

Interventions

Two study groups:

  1. Music group: music therapy entrainment intervention, matching live music to respiratory rate of patients

  2. Control group: quiet rest only

Patient‐selected live music used. Music therapist used guitar and voice

Number of sessions: 1

Length of session: 25 minutes

Categorized as music therapy study

Outcomes

Hear rate: change scores from pre‐test to post‐test

Respiratory rate: change scores from pre‐test to post‐test

Oxygen saturation level: change scores from pre‐test to post‐test

Rapid shallow breathing: change scores from pre‐test to post‐test

Notes

Only the data of the medical, non‐cardiac patients are included in this review. The cardiac patients were treated immediately following cardiac artery bypass grafting surgery and their physiological responses were still suppressed by the anaesthesia.

The SDs reported in this study are large. Large SDs were present at baseline, meaning that there was a large variety in physiological responses even before the start of the intervention. The author did not report standard deviations (SDs) for the reported change score so we computed these. Since we did not have information about the correlation coefficient, we used a conservative estimate of 0.5. This made the SD of the change score large (i.e., similar to SDs of pre‐ and post‐test scores).

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

High risk

Alternate group assignment

Allocation concealment (selection bias)

High risk

Allocation concealment was not possible because of use of alternate group assignment

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Participants could not be blinded. Personnel were blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

Unclear risk

Not reported

Blinding of outcome assessment (detection bias)
Subjective outcomes

Low risk

This study does not include subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

Attrition rate: 0%

Selective reporting (reporting bias)

Low risk

No evidence of selective reporting

Free from financial conflict of interest

Low risk

Unfunded study (Master's thesis)

Wong 2001

Methods

Cross‐over trial

Participants

Adults receiving mechanical ventilation in critical care unit.

Most frequent primary diagnosis: pulmonary disease (no further details reported)

Average length of mechanical ventilation before onset of study: 6.05 (3.65) days

Ventilator mode: PS (80%), SIMV + PS (20%)

Type of airway: tracheostomy (60%), oral endotracheal tube (40%)

Diagnosis: pulmonary diseases

N randomized to music group: unclear

N randomized to control group: unclear

N analysed in music condition: 20

N analysed in control condition: 20

Age: 58.25 y

Sex: 5 F, 15 M

Ethnicity: Chinese

Setting: inpatient critical care unit

Country: China

Interventions

Two study groups:

  1. Music group: listening to patient‐selected music via headphone

  2. Control group: uninterrupted rest

Music selection used: Chinese music (Chinese folk song, music played by Chinese instruments, Chinese music played by Western instruments, Buddhist music) and various Western music (classical, soundtrack, piano)

Number of sessions: each subject participated in one music condition and one rest condition

Length of condition: 30 minutes

Categorized as music medicine study

Outcomes

State anxiety (short form; data was converted to full score): post‐test score on the Spielberger State Anxiety Inventory (6‐item version)

Respiratory rate: post‐test score

Mean blood pressure: post‐test score

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Quote: "Randomization to different orderings of the interventions was done by drawing lots [...]" (p. 379)

Allocation concealment (selection bias)

Low risk

Achieved through use of draw of lots for each patient after consent was obtained

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Participants could not be blinded. Personnel were blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

High risk

Outcome assessor was not blinded

Blinding of outcome assessment (detection bias)
Subjective outcomes

High risk

Self‐report measures were used for subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Unclear risk

It is unclear whether number of participants analysed equals the number of participants recruited

Selective reporting (reporting bias)

Low risk

No evidence of selective reporting

Free from financial conflict of interest

Unclear risk

Funding information is not provided. Conflict of interest statement is lacking

Wu 2008

Methods

Two‐arm parallel group design

Participants

Adults necessitating mechanical ventilation

Participants were suffering from lung‐related diseases (n = 39) and non‐lung related diseases (n = 21)

Average length of mechanical ventilation before onset of study: 3.47 (1 to 161) days

Ventilator mode: not reported

Type of airway: oral endotracheal tube and tracheotomy tube

N randomized to music group: 30

N randomized to control group: 30

N analysed in music group: 30

N analysed in control group: 30

Sex: 23 F, 37 M

Age: mean age not reported

Ethnicity: 100% Chinese

Setting: critical care unit

Country: Taiwan

Interventions

Two study groups:

  1. Music group: music listening via headphones

  2. Control group: quiet rest without music

Music selections provided: participants were asked to select from Chinese, religious, New Age, hymn, classical or orchestral music with slow tempo. Most participants selected old Taiwanese popular songs without lyrics (n = 17) and religious music (n = 7, 24)

Number of sessions: 1

Length of session: 30 minutes

Categorized as music medicine study

Outcomes

Anxiety (VAAS): change scores

HR, RR, SBP, DBP, MAP, O2sa: change scores

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Use of coin flip

Allocation concealment (selection bias)

Low risk

Use of coin flip

Blinding (performance bias and detection bias)
Objective outcomes

High risk

Blinding of the participants was not possible. Personnel were not blinded

Blinding of outcome assessment (detection bias)
Objective outcomes

High risk

Outcome assessors were not blinded

Blinding of outcome assessment (detection bias)
Subjective outcomes

High risk

Self‐report measures were used for subjective outcomes

Incomplete outcome data (attrition bias)
All outcomes

Low risk

No participant loss

Selective reporting (reporting bias)

Low risk

No indication of selective reporting

Free from financial conflict of interest

Low risk

Unfunded research study

Characteristics of excluded studies [ordered by study ID]

Study

Reason for exclusion

Almerud 2003

Insufficient data reporting

Austin 2010

Review article

Bauer 2002

Commentary on Wong 2001

Besel 2006

Not randomized controlled trial (RCT) or controlled clinical trial (CCT)

Burke 1995

Not RCT or CCT

Caine 1991

Not population of interest

Chlan 2000

Programme description

Chlan 2001

Not RCT or CCT

Chlan 2006

Not RCT or CCT

Chlan 2011

Not RCT or CCT. Report on analysis of anxiety patterns of subsample of the 2013 RCT included in this review

Chou 2003

Not RCT or CCT

Davis 2012

review article

Fontaine 1994

Programme description

Hansen‐Flachen 1994

Not RCT or CCT

Ho 2012

Review article

Hunter 2010

Not RCT or CCT

Iriarte 2003

Not RCT or CCT

Lorch 1994

Not population of interest

Nilsson 2011

Commentary on Bradt 2010

Standley 1995

Not population of interest

Tate 2010

Not population of interest

Twiss 2006

Not randomized controlled trial. In the thesis author explicitly states that only 4 CD players were available. If all CD players were in use, the next group of patients were placed in the control group

Wiens 1995

Not population of interest

Data and analyses

Open in table viewer
Comparison 1. Music versus standard care

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 State Anxiety (change scores) Show forest plot

5

288

Std. Mean Difference (IV, Random, 95% CI)

‐1.11 [‐1.75, ‐0.47]

Analysis 1.1

Comparison 1 Music versus standard care, Outcome 1 State Anxiety (change scores).

Comparison 1 Music versus standard care, Outcome 1 State Anxiety (change scores).

2 Heart Rate Show forest plot

8

338

Mean Difference (IV, Random, 95% CI)

‐3.95 [‐6.62, ‐1.27]

Analysis 1.2

Comparison 1 Music versus standard care, Outcome 2 Heart Rate.

Comparison 1 Music versus standard care, Outcome 2 Heart Rate.

2.1 Final score

2

63

Mean Difference (IV, Random, 95% CI)

‐5.26 [‐13.56, 3.03]

2.2 Change score

6

275

Mean Difference (IV, Random, 95% CI)

‐3.82 [‐6.83, ‐0.82]

3 Heart Rate (adequate randomization) Show forest plot

7

318

Mean Difference (IV, Random, 95% CI)

‐4.01 [‐6.80, ‐1.22]

Analysis 1.3

Comparison 1 Music versus standard care, Outcome 3 Heart Rate (adequate randomization).

Comparison 1 Music versus standard care, Outcome 3 Heart Rate (adequate randomization).

4 Respiratory Rate Show forest plot

9

357

Mean Difference (IV, Random, 95% CI)

‐2.87 [‐3.64, ‐2.10]

Analysis 1.4

Comparison 1 Music versus standard care, Outcome 4 Respiratory Rate.

Comparison 1 Music versus standard care, Outcome 4 Respiratory Rate.

4.1 Final score

3

83

Mean Difference (IV, Random, 95% CI)

‐2.14 [‐4.06, ‐0.22]

4.2 Change score

6

274

Mean Difference (IV, Random, 95% CI)

‐3.01 [‐3.85, ‐2.17]

5 Respiratory Rate (adequate randomization) Show forest plot

8

337

Mean Difference (IV, Random, 95% CI)

‐2.87 [‐3.64, ‐2.09]

Analysis 1.5

Comparison 1 Music versus standard care, Outcome 5 Respiratory Rate (adequate randomization).

Comparison 1 Music versus standard care, Outcome 5 Respiratory Rate (adequate randomization).

6 Systolic Blood Pressure Show forest plot

6

269

Mean Difference (IV, Random, 95% CI)

‐4.22 [‐6.38, ‐2.06]

Analysis 1.6

Comparison 1 Music versus standard care, Outcome 6 Systolic Blood Pressure.

Comparison 1 Music versus standard care, Outcome 6 Systolic Blood Pressure.

6.1 Final score

1

14

Mean Difference (IV, Random, 95% CI)

‐9.0 [‐22.40, 4.40]

6.2 Change score

5

255

Mean Difference (IV, Random, 95% CI)

‐4.09 [‐6.28, ‐1.90]

7 Diastolic Blood Pressure Show forest plot

6

269

Mean Difference (IV, Random, 95% CI)

‐2.16 [‐4.40, 0.07]

Analysis 1.7

Comparison 1 Music versus standard care, Outcome 7 Diastolic Blood Pressure.

Comparison 1 Music versus standard care, Outcome 7 Diastolic Blood Pressure.

7.1 Final score

1

14

Mean Difference (IV, Random, 95% CI)

‐3.70 [‐15.17, 7.77]

7.2 Change score

5

255

Mean Difference (IV, Random, 95% CI)

‐2.13 [‐4.58, 0.31]

8 Mean Arterial Pressure Show forest plot

3

98

Mean Difference (IV, Random, 95% CI)

‐1.79 [‐4.56, 0.99]

Analysis 1.8

Comparison 1 Music versus standard care, Outcome 8 Mean Arterial Pressure.

Comparison 1 Music versus standard care, Outcome 8 Mean Arterial Pressure.

8.1 Final score

1

20

Mean Difference (IV, Random, 95% CI)

‐4.75 [‐17.81, 8.31]

8.2 Change score

2

78

Mean Difference (IV, Random, 95% CI)

‐1.65 [‐4.49, 1.20]

9 Oxygen Saturation Level (change scores) Show forest plot

4

193

Mean Difference (IV, Random, 95% CI)

‐0.05 [‐0.67, 0.57]

Analysis 1.9

Comparison 1 Music versus standard care, Outcome 9 Oxygen Saturation Level (change scores).

Comparison 1 Music versus standard care, Outcome 9 Oxygen Saturation Level (change scores).

10 Mortality Show forest plot

2

271

Risk Ratio (M‐H, Random, 95% CI)

0.76 [0.38, 1.51]

Analysis 1.10

Comparison 1 Music versus standard care, Outcome 10 Mortality.

Comparison 1 Music versus standard care, Outcome 10 Mortality.

Study Flow Diagram ‐ Original Review.
Figuras y tablas -
Figure 1

Study Flow Diagram ‐ Original Review.

Study flow diagram ‐ updated review.
Figuras y tablas -
Figure 2

Study flow diagram ‐ updated review.

Funnel plot of comparison: 1 Music versus standard care, outcome: 1.4 Respiratory rate.
Figuras y tablas -
Figure 3

Funnel plot of comparison: 1 Music versus standard care, outcome: 1.4 Respiratory rate.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 4

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 5

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.

Comparison 1 Music versus standard care, Outcome 1 State Anxiety (change scores).
Figuras y tablas -
Analysis 1.1

Comparison 1 Music versus standard care, Outcome 1 State Anxiety (change scores).

Comparison 1 Music versus standard care, Outcome 2 Heart Rate.
Figuras y tablas -
Analysis 1.2

Comparison 1 Music versus standard care, Outcome 2 Heart Rate.

Comparison 1 Music versus standard care, Outcome 3 Heart Rate (adequate randomization).
Figuras y tablas -
Analysis 1.3

Comparison 1 Music versus standard care, Outcome 3 Heart Rate (adequate randomization).

Comparison 1 Music versus standard care, Outcome 4 Respiratory Rate.
Figuras y tablas -
Analysis 1.4

Comparison 1 Music versus standard care, Outcome 4 Respiratory Rate.

Comparison 1 Music versus standard care, Outcome 5 Respiratory Rate (adequate randomization).
Figuras y tablas -
Analysis 1.5

Comparison 1 Music versus standard care, Outcome 5 Respiratory Rate (adequate randomization).

Comparison 1 Music versus standard care, Outcome 6 Systolic Blood Pressure.
Figuras y tablas -
Analysis 1.6

Comparison 1 Music versus standard care, Outcome 6 Systolic Blood Pressure.

Comparison 1 Music versus standard care, Outcome 7 Diastolic Blood Pressure.
Figuras y tablas -
Analysis 1.7

Comparison 1 Music versus standard care, Outcome 7 Diastolic Blood Pressure.

Comparison 1 Music versus standard care, Outcome 8 Mean Arterial Pressure.
Figuras y tablas -
Analysis 1.8

Comparison 1 Music versus standard care, Outcome 8 Mean Arterial Pressure.

Comparison 1 Music versus standard care, Outcome 9 Oxygen Saturation Level (change scores).
Figuras y tablas -
Analysis 1.9

Comparison 1 Music versus standard care, Outcome 9 Oxygen Saturation Level (change scores).

Comparison 1 Music versus standard care, Outcome 10 Mortality.
Figuras y tablas -
Analysis 1.10

Comparison 1 Music versus standard care, Outcome 10 Mortality.

Summary of findings for the main comparison. Music compared to standard care for mechanically ventilated patients

Music compared to standard care for mechanically ventilated patients

Patient or population: mechanically ventilated patients
Settings: intensive care units
Intervention: music
Comparison: standard care

Outcomes

Relative effect
(95% CI)

No of participants
(studies)

Quality of the evidence
(GRADE)

State anxiety
STAI, VAS

The mean state anxiety in the intervention groups was
1.11 standard deviations lower
(1.75 to 0.47 lower)

288
(5 studies)

⊕⊕⊝⊝
low1,2,3,4

Heart rate
beats per minute

The mean heart rate in the intervention groups was
3.95 lower
(6.62 to 1.27 lower)

338
(8 studies)

⊕⊝⊝⊝
very low1,5,6

Respiratory rate
breaths per minute

The mean respiratory rate in the intervention groups was
2.87 lower
(3.64 to 2.10 lower)

357
(9 studies)

⊕⊝⊝⊝
very low1,6

Systolic blood pressure

mmHg

The mean systolic blood pressure in the intervention groups was
4.22 lower
(6.38 to 2.06 lower)

269
(6 studies)

⊕⊝⊝⊝
very low1,7

Diastolic blood pressure

mmHg

The mean diastolic blood pressure in the intervention groups was
2.16 lower
(4.4 lower to 0.07 higher)

269
(6 studies)

⊕⊝⊝⊝
very low1,7

Mean arterial pressure

mmHg

The mean arterial pressure in the intervention groups was
1.79 lower
(4.56 lower to 0.99 higher)

98
(3 studies)

⊕⊝⊝⊝
very low1,7

Oxygen saturation level

The mean oxygen saturation level in the intervention groups was
0.05 lower
(0.67 lower to 0.57 higher)

193
(4 studies)

⊕⊕⊝⊝
low1

CI: Confidence interval

GRADE Working Group grades of evidence
High quality: further research is very unlikely to change our confidence in the estimate of effect.
Moderate quality: further research is likely to have an important impact on our confidence in the estimate of effect and may change the estimate.
Low quality: further research is very likely to have an important impact on our confidence in the estimate of effect and is likely to change the estimate.
Very low quality: we are very uncertain about the estimate.

1 The majority of the trials were assessed as high risk of bias studies
2 All point estimates favour music although the magnitude of the effect differs across studies
3 Wide confidence interval, however, this is due to the fact that some studies reported very large beneficial effects of music on anxiety
4 Large reduction in anxiety as evidenced by SMD of 1.11
5 Results were inconsistent across studies as evidenced by I² = 62%
6 Somewhat wide confidence interval
7 Wide confidence interval

Figuras y tablas -
Summary of findings for the main comparison. Music compared to standard care for mechanically ventilated patients
Comparison 1. Music versus standard care

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 State Anxiety (change scores) Show forest plot

5

288

Std. Mean Difference (IV, Random, 95% CI)

‐1.11 [‐1.75, ‐0.47]

2 Heart Rate Show forest plot

8

338

Mean Difference (IV, Random, 95% CI)

‐3.95 [‐6.62, ‐1.27]

2.1 Final score

2

63

Mean Difference (IV, Random, 95% CI)

‐5.26 [‐13.56, 3.03]

2.2 Change score

6

275

Mean Difference (IV, Random, 95% CI)

‐3.82 [‐6.83, ‐0.82]

3 Heart Rate (adequate randomization) Show forest plot

7

318

Mean Difference (IV, Random, 95% CI)

‐4.01 [‐6.80, ‐1.22]

4 Respiratory Rate Show forest plot

9

357

Mean Difference (IV, Random, 95% CI)

‐2.87 [‐3.64, ‐2.10]

4.1 Final score

3

83

Mean Difference (IV, Random, 95% CI)

‐2.14 [‐4.06, ‐0.22]

4.2 Change score

6

274

Mean Difference (IV, Random, 95% CI)

‐3.01 [‐3.85, ‐2.17]

5 Respiratory Rate (adequate randomization) Show forest plot

8

337

Mean Difference (IV, Random, 95% CI)

‐2.87 [‐3.64, ‐2.09]

6 Systolic Blood Pressure Show forest plot

6

269

Mean Difference (IV, Random, 95% CI)

‐4.22 [‐6.38, ‐2.06]

6.1 Final score

1

14

Mean Difference (IV, Random, 95% CI)

‐9.0 [‐22.40, 4.40]

6.2 Change score

5

255

Mean Difference (IV, Random, 95% CI)

‐4.09 [‐6.28, ‐1.90]

7 Diastolic Blood Pressure Show forest plot

6

269

Mean Difference (IV, Random, 95% CI)

‐2.16 [‐4.40, 0.07]

7.1 Final score

1

14

Mean Difference (IV, Random, 95% CI)

‐3.70 [‐15.17, 7.77]

7.2 Change score

5

255

Mean Difference (IV, Random, 95% CI)

‐2.13 [‐4.58, 0.31]

8 Mean Arterial Pressure Show forest plot

3

98

Mean Difference (IV, Random, 95% CI)

‐1.79 [‐4.56, 0.99]

8.1 Final score

1

20

Mean Difference (IV, Random, 95% CI)

‐4.75 [‐17.81, 8.31]

8.2 Change score

2

78

Mean Difference (IV, Random, 95% CI)

‐1.65 [‐4.49, 1.20]

9 Oxygen Saturation Level (change scores) Show forest plot

4

193

Mean Difference (IV, Random, 95% CI)

‐0.05 [‐0.67, 0.57]

10 Mortality Show forest plot

2

271

Risk Ratio (M‐H, Random, 95% CI)

0.76 [0.38, 1.51]

Figuras y tablas -
Comparison 1. Music versus standard care