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Referencias

Bartha 2013 {published data only}

Bartha E, Arfwedson C, Imnell A, Fernlund ME, Andersson LE, Kalman S, et al. Randomized controlled trial of goal‐directed haemodynamic treatment in patients with proximal femoral fracture. British Journal of Anaesthesia2013; Vol. 110, issue 4:545‐53. [PUBMED: 23274782]
Bartha E, Davidson T, Brodtkorb TH, Carlsson P, Kalman S. Value of information: interim analysis of a randomized, controlled trial of goal‐directed hemodynamic treatment for aged patients. Trials 2013;14(1):205. [PUBMED: 23837606]
Bartha E, Imnell A, Kalman S. Goal‐directed haemodynamic treatment in elderly with hip‐fracture‐predictors of haemodynamic responses and postoperative complications. Acta Anaesthesiologica Scandinavica 2013;(Suppl 57):31‐2.
NCT01141894. Goal Directed Haemodynamic Treatment for Patients With Proximal Femoral Fracture (GDHT). https://clinicaltrials.gov/ct2/show/NCT01141894?term=NCT01141894&rank=1 (accessed 07 July 2015).

Moppett 2014 {published data only}

ISRCTN88284896. Neck of Femur Optimisation Therapy ‐ Targeted Stroke Volume. http://www.controlled‐trials.com/ISRCTN88284896 (accessed 07 July 2015).
Moppett IK, Rowlands M, Mannings A, Moran CG, Wiles MD. LiDCO‐based fluid management in patients undergoing hip fracture surgery under spinal anaesthesia: a randomized trial and systematic review. British Journal of Anaesthesia 2014;114(3):444‐59. [PUBMED: 25500940]

Schultz 1985 {published data only}

Schultz RJ, Whitfield GF, LaMura JJ, Raciti A, Krishnamurthy S. The role of physiologic monitoring in patients with fractures of the hip. Journal of Trauma1985, issue 4:309‐16. [CN‐00226725]

Sinclair 1997 {published data only}

Sinclair S, James S, Singer M. Intraoperative intravascular volume optimisation and length of hospital stay after repair of proximal femoral fracture: randomised controlled trial. BMJ 1997;315:909‐12. [MEDLINE: 9361539]

Venn 2002 {published data only}

Venn R, Steele A, Richardson P, Grounds RM, Newman P. Duration of hospital stay and perioperative morbidity in patients with hip fractures ‐ reply. British Journal of Anaesthesia 2002;88(5):742‐3.
Venn R, Steele A, Richardson P, Poloniecki J, Grounds M, Newman P. Randomized controlled trial to investigate influence of the fluid challenge on duration of hospital stay and perioperative morbidity in patients with hip fractures. British Journal of Anaesthesia 2002;88:65‐71. [MEDLINE: 11881887]

Carson 1998 {published data only}

Carson JL, Terrin ML, Barton FB, Aaron R, Greenburg AG, Heck DA, et al. A pilot randomized trial comparing symptomatic vs. hemoglobin‐level‐driven red blood cell transfusions following hip fracture. Transfusion 1998;6:522‐9. [CN‐00683307]

Carson 2006 {published data only}

Carson JL, Terrin ML, Magaziner J, Chaitman BR, Apple FS, Heck DA, et al. Transfusion trigger trial for functional outcomes in cardiovascular patients undergoing surgical hip fracture repair (FOCUS). Transfusion 2006;46(12):2192‐206. [2006580664]

Choong 2000 {published data only}

Choong PF, Langford AK, Dowsey MM, Santamaria NM. Clinical pathway for fractured neck of femur: a prospective, controlled study. The Medical Journal of Australia 2000;9:423‐6. [CN‐00297784]

Eneroth 2005 {published data only}

Eneroth M, Olsson UB, Thorngren KG. Insufficient fluid and energy intake in hospitalised patients with hip fracture. A prospective randomised study of 80 patients. Clinical Nutrition 2005;24(2):297‐303. [2005133551]

Fathi 2013 {published data only}

Fathi M, Imani F, Joudi M, Goodarzi V. Comparison between the effects of Ringer`s lactate and hydroxyethyl starch on hemodynamic parameters after spinal anesthesia: a randomized clinical trial. Anesthesiology and Pain Medicine 2013;2(3):127‐33. [PUBMED: 24244923]

Gan 2002 {published data only}

Gan TJ, Soppitt A, Maroof M, El‐Moalem H, Robertson KM, Moretti E, et al. Goal‐directed intraoperative fluid administration reduces length of hospital stay after major surgery. Anesthesiology 2002;97(4):820‐6. [PUBMED: 12357146]

Lopes 2007 {published data only}

Lopes MR, Oliveira MA, Pereira VOS, Lemos IPB, Auler JOC, Michard F. Goal‐directed fluid management based on pulse pressure variation monitoring during high‐risk surgery: a pilot randomized controlled trial. Critical Care 2007;11(5):R100. [PUBMED: 17822565]

Messina 2013 {published data only}

Messina A, Frassanito L, Colombo D, Vergari A, Draisci G, Della Corte F, et al. Hemodynamic changes associated with spinal and general anesthesia for hip fracture surgery in severe ASA III elderly population: a pilot trial. Minerva Anestesiologica 2013;79(9):1021‐9. [PUBMED: 23635998]

Rowlands 2013 {published data only}

Rowlands M, Forward DP, Sahota O, Moppett IK. The effect of intravenous iron on postoperative transfusion requirements in hip fracture patients: study protocol for a randomized controlled trial. Trials 2013;14:288. [PUBMED: 2405990]

Swanson 1998 {published data only}

Swanson CE, Day GA, Yelland CE, Broome JR, Massey L, Richardson HR, et al. The management of elderly patients with femoral fractures. A randomised controlled trial of early intervention versus standard care. Medical Journal of Australia 1998;169(10):515‐8. [1998385629]

Wilson 1999 {published data only}

Wilson J, Woods I, Fawcett J, Whall R, Dibb W, Morris C, et al. Reducing the risk of major elective surgery: randomised controlled trial of preoperative optimisation of oxygen delivery. BMJ 1999;318(7191):1099‐103. [PUBMED: 10213716]

Sandham 2003 {published data only (unpublished sought but not used)}

Sandham JD, Hull RD, Brant RF, Knox L, Pineo GF, Doig CJ, et al. A randomized, controlled trial of the use of pulmonary‐artery catheters in high‐risk surgical patients. New England Journal of Medicine 2003;348(1):5‐14. [PUBMED: 12510037]

Vanakas 2012 {published data only}

Vanakas T, Asouhidou I, Samaras A, Diminikos G, Ioannou P. Implementation of goal‐directed protocol in elderly patients undergoing femoral fracture repair. European Journal of Anaesthesiology2012; Vol. 29:67. [71084208]

NCT02382185 {published data only}

NCT02382185. Non‐invasive Cardiac Output Monitoir to Guide Goal Directed Fluid Therapy in High Risk Patients Undergoing Urgent Surgical Repair of Proximal Femoral Fractures (ClearNOF). https://clinicaltrials.gov/ct2/show/NCT02382185 (accessed 07 July 2015).

Bendjelid 2010

Bendjelid K, Giraud R, Siegenthaler N, Michard F. Validation of a new transpulmonary thermodilution system to assess global end‐diastolic volume and extravascular lung water. Critical Care 2010;14(6):R209. [DOI: 10.1186/cc9332]

Bottle 2006

Bottle A, Aylin P. Mortality associated with delay in operation after hip fracture: observational study. BMJ 2006;332(7547):947‐51. [PUBMED: 16554334]

Covidence [Computer program]

https://www.covidence.org/. Covidence. Melbourne, Australia: https://www.covidence.org/, 2013.

Eyre 2010

Eyre L. Optimal volaemic status and predicting fluid responsiveness. Continuing Education in Anaesthesia Critical Care and Pain 2010;10(2):59‐62.

Funk 2009

Funk DJ, Moretti EW, Gan TJ. Minimally invasive cardiac output monitoring in the perioperative setting. Anesthesia and Analgesia 2009;108(3):887‐97. [PUBMED: 19224798]

Green 2010

Green D, Paklet L. Latest developments in peri‐operative monitoring of the high‐risk major surgery patient. International Journal of Surgery 2010;8(2):90‐9. [PUBMED: 20079769]

Gullberg 1997

Gullberg B, Johnell O, Kanis JA. World‐wide projections for hip fracture. Osteoporosis International 1997;7(5):407‐13. [PUBMED: 9425497]

Guyatt 2008

Guyatt GH, Oxman AD, Kunz R, Vist GE, Falck‐Ytter Y, Schunemann HJ. What is "quality of evidence" and why is it important to clinicians?. BMJ 2008;336(7651):995‐8. [PUBMED: 18456631]

Handoll 2008

Handoll HHG, Parker MJ. Conservative versus operative treatment for hip fractures in adults. Cochrane Database of Systematic Reviews 2008, Issue 3. [DOI: 10.1002/14651858.CD000337.pub2]

Higgins 2011

Higgins JPT, Green S (editors). Cochrane Handbook for Systematic Reviews of Interventions, Version 5.1.0 [updated March 2011]. The Cochrane Collaboration, 2011. www.cochrane‐handbook.org.

Higgins 2011a

Higgins JPT, Altman DG, Gøtzsche PC, Jüni P, Moher D, Oxman AD, et al. The Cochrane Collaboration’s tool for assessing risk of bias in randomised trials. BMJ 2011;343:d5928. [PUBMED: 22008217]

Hoffman 2012

Hoffmann H, Kettelhack C. Fast‐track surgery ‐ conditions and challenges in postsurgical treatment: a review of elements of translational research in enhanced recovery after surgery. European Surgical Research 2012;49:24‐34. [PUBMED: 22797672]

Kanis 2012

Kanis JA, Odén A, McCloskey EV, Johansson H, Wahl DA, Cooper C. A systematic review of hip fracture incidence and probability of fracture worldwide. Osteoporosis Internatinal 2012;23(9):2239‐56. [PUBMED: 22419370]

Kannus 1996

Kannus P, Parkkari J, Sievänen H, Heinonen A, Vuori I, Järvinen M. Epidemiology of hip fractures. Bone 1996;18(1 Suppl):57S‐63S.

Lawrence 2002

Lawrence VA, Hilsenbeck SG, Noveck H, Poses RM, Carson JL. Medical complications and outcomes after hip fracture repair. Archives of Internal Medicine 2002;162(18):2053‐7. [PUBMED: 12374513]

Lees 2009

Lees N, Hamilton M, Rhodes A. Clinical review: goal‐directed therapy in high risk surgical patients. Critical Care 2009;13(5):231. [PUBMED: 19863764]

Liem 2012

Liem IS. Literature review of outcome parameters used in studies of geriatric fracture centers. Archives of Orthopaedic and Trauma Surgery 2012 Aug 2; Epub ahead of print.

Marik 2008

Marik PE, Baram M, Vahid B. Does central venous pressure predict fluid responsiveness? A systematic review of the literature and the tale of seven mares. Chest 2008;134(1):172‐8. [PUBMED: 18628220]

Maus 2008

Maus TM, Lee DE. Arterial pressure‐based cardiac output assessment. Journal of Cardiothoracic and Vascular Anesthesia 2008;22(3):468‐73. [PUBMED: 18503943]

Moppett 2012

Moppett IK, Parker M, Griffiths R, Bowers T, White SM, Moran CG. Nottingham Hip Fracture Score: longitudinal and multi‐assessment. British Journal of Anaesthesia 2012;109(4):546‐50. [PUBMED: 22728204]

Muller 2008

Muller L, Louart G, Fabbro‐Peray P, Carr J, Ripart J, de la Coussaye JE, et al. The intrathoracic blood volume index as an indicator of fluid responsiveness in critically ill patients with acute circulatory failure: a comparison with central venous pressure. Anesthesia and Analgesia 2008;107(2):607‐13. [PUBMED: 18633040]

RevMan 5.3 [Computer program]

The Nordic Cochrane Centre, The Cochrane Collaboration. Review Manager (RevMan). Version 5.3. Copenhagen: The Nordic Cochrane Centre, The Cochrane Collaboration, 2011.

Roche 2005

Roche JJ, Wenn RT, Sahota O, Moran CG. Effect of comorbidities and postoperative complications on mortality after hip fracture in elderly people: prospective observational cohort study. BMJ (Clinical research ed.) 2005;331(7529):1374. [PUBMED: 16299013]

Sterling 2011

Sterling RS. Gender and race/ethnicity differences in hip fracture incidence, morbidity, mortality, and function. Clinical Orthopaedics and Related Research 2011;469(7):1913‐8. [PUBMED: 21161737]

Wiles 2011

Wiles MD, Whiteley WJ, Moran CG, Moppett IK. The use of LiDCO based fluid management in patients undergoing hip fracture surgery under spinal anaesthesia: neck of femur optimisation therapy ‐ targeted stroke volume (NOTTS): study protocol for a randomized controlled trial. Trials 2011;12:213. [PUBMED: 21955538]

Brammar 2013

Brammar A, Nicholson A, Trivella M, Smith AF. Perioperative fluid volume optimization following proximal femoral fracture. Cochrane Database of Systematic Reviews 2013, Issue 9. [DOI: 10.1002/14651858.CD003004.pub3]

Price 2004

Price JD, Sear JJW, Venn RRM. Perioperative fluid volume optimization following proximal femoral fracture. Cochrane Database of Systematic Reviews 2004, Issue 1. [DOI: 10.1002/14651858.CD003004.pub2]

Characteristics of studies

Characteristics of included studies [ordered by study ID]

Bartha 2013

Methods

Randomized controlled trial

Parallel group

Participants

Baseline characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Age: 86 (71 to 101) years

  • Gender (M/F): 71/29

  • BMI: 23 (22 to 24) kg/m2

  • ASA I ‐ IV: 1/19/43/7

Protocol using standard measures

  • Age: 85 (70 to 101) years

  • Gender (M/F): 75/25

  • BMI: 23 (22 to 24) kg/m2

  • ASA I ‐ IV: 2/20/43/7

Included criteria: patients aged > 70 years weighing > 40 kg. Undergoing PFF surgery during regular operating hours

Excluded criteria: patients who could be harmed by the treatment (ongoing myocardial infarction, chronic dialysis), concomitant medication with lithium, known allergy to lithium or medical device components, weight ≤ 40 kg, life expectancy < 6 months, pathological fractures and conditions, inability to give informed consent, anticipated difficulties obtaining data during the first postoperative year (as judged by a research team member), operations scheduled during hours when research team was unavailable. (Patients with pathological fractures had presumed survival < 12 months. Given the planned follow‐up of 12 months, these patients were not included.)

Sponsorship source: Stockholm county grant

Country: Sweden

Setting: hospital

Interventions

Intervention characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Type of anaesthetic: spinal 69, general 1

  • Type of fixation/surgery: proximal femoral fracture

  • Number randomized to group: 74

  • Description of monitoring: LiDCO monitor

Protocol using standard measures

  • Type of anaesthetic: spinal 63, general 9

  • Type of fixation/surgery: proximal femoral fracture

  • Number randomized to group: 75

  • Description of monitoring: LiDCO monitor recorded data, but this was handled by attending personnel. Fluid was managed via a pre‐established treatment algorithm

Outcomes

Continuous

  • Total length of hospital stay

  • Time to medical fitness for discharge

Dichotomous

  • Mortality at 30 days

Adverse events

  • Cardiovascular, respiratory, cerebrovascular, acute kidney failure, gastrointestinal bleeding, confusion, sepsis, deep vein thrombosis, wound infection, decubitus, wound haematoma, other complications

Notes

Number of participants: Tables showed discrepancy in the number of participants. Review authors have taken number of participants from the text, not from the tables

Other: elderly patients. Poor recruitment to study led to early stop at 150 participants. Originally powered to include 460 participants

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Computer‐generated list of random numbers

Allocation concealment (selection bias)

Low risk

Allocation obtained via telephone. Sequence not available to research team

Blinding of participants and personnel (performance bias)
All outcomes

Unclear risk

Participants, caregivers, anaesthetist not blinded. Unclear whether this could have affected performance of personnel

Blinding of outcome assessment (detection bias)
Mortality / adverse outcomes

Low risk

Personnel collecting data were not blinded, but assigned treatment was coded in the data set for primary and secondary outcome analyses. Therefore, attempts were made to blind data analysts

Blinding of outcome assessment (detection bias)
Length of stay

Low risk

Personnel collecting data were not blinded, but assigned treatment was coded in the data set for primary and secondary outcome analyses. Therefore, attempts were made to blind data analysts

Incomplete outcome data (attrition bias)
All outcomes

Low risk

Loss of 7 participants after randomization. Reasons for loss given; analyses completed by study authors included ITT analyses

Selective reporting (reporting bias)

Low risk

ClinicalTrials.gov; ref NCT01141894. Protocol includes outcomes related to health‐related quality of life and cost analysis, with plans for each participant to have 4 postoperative visits. This is not reported at all in full study publication but is reported in interim report

Other bias

Unclear risk

Baseline characteristics well documented. Comparable, except for diabetes mellitus in twice as many participants in the GDHT group ‐ unclear how this could affect results
Wide exclusion criteria ‐ this may indicate that the study favours patients who are healthier

Moppett 2014

Methods

Study design: randomized controlled trial

Study grouping: parallel group

Participants

Baseline characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Age: 85 (IQR 78 to 90; range 68 to 95) years

  • Gender (M/F): 15/36

Protocol using standard measures

  • Age: 85 (IQR 80 to 88; range 63 to 95) years

  • Gender (M/F): 22/41

Included criteria: patients admitted through the emergency department with primary fragility hip fracture, over 60 years of age and listed for surgical repair under spinal anaesthesia. Included patients unable to give consent on their own

Excluded criteria: planned general anaesthetic for surgery repair, severe valvular heart disease (as this could affect the accuracy of the LiDCO device), taking therapeutic lithium (as this can affect the calibration of the LiDCO device), multiple injuries, revision hip surgery or requirement for total hip arthroplasty

Sponsorship source: NIHR funding

Country: UK

Setting: hospital

Interventions

Intervention characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Type of anaesthetic: spinal

  • Type of fixation/surgery: DHS 22, ETS 20, TFN 2, AM 5, AO screws 2

  • Number randomized to group: 62 allocated but 11 did not receive treatment. Therefore, 51 analysed

  • Description of monitoring: LiDCO monitor, arterial line (20 G) sited after local anaesthesia (lidocaine 1%) and before spinal anaesthesia

Usual care

  • Type of anaesthetic: spinal

  • Type of fixation/surgery: DHS 25, ETS 29, AM 7, TFN 2

  • Number randomized to group: 63 allocated but 5 did not receive treatment. Therefore, 63 analysed

  • Description of monitoring: LiDCO monitor, arterial line (20 G) sited after local anaesthesia (lidocaine 1%) and before spinal anaesthesia. Attending anaesthetist not allowed to view LiDCO monitor

Outcomes

Continuous

  • Total length of hospital stay

  • Time to medical fitness for discharge

Dichotomous

  • Mortality up to 12 months after admission

  • Return to pre‐fracture accommodation within 6 months

Adverse events

  • Cardiovascular, respiratory, infectious, renal (RIFLE), abdominal, delirium, bleeding, skin

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Computer‐generated concealed tables with blocks of unequal size stratified according to gender and mortality risk

Allocation concealment (selection bias)

Low risk

"Patients were randomized...via a secure website"

Blinding of participants and personnel (performance bias)
All outcomes

Unclear risk

Attending anaesthetist was aware of treatment allocation but was blinded from LiDCO monitor in control group. Unclear whether this could have affected performance of personnel

Blinding of outcome assessment (detection bias)
Mortality / adverse outcomes

Low risk

Data extracted from notes by staff unaware of treatment allocation
Data analysis performed before unblinding of the trial

Blinding of outcome assessment (detection bias)
Length of stay

Low risk

Data extracted from notes by staff unaware of treatment allocation
Data analysis performed before unblinding of the trial

Incomplete outcome data (attrition bias)
All outcomes

High risk

Loss of 12% of data
High number of losses in both groups after randomization. Explanations presented ‐ several due to failure in anaesthetic/arterial lines. Study authors re‐included lost participants for length of stay outcome and stated that this did not affect results. Inevitable losses due to participant group?

Selective reporting (reporting bias)

Low risk

Registered trial; ISRCTN88284896. Had not reported on cost of care or effects on heart and blood vessels, but not relevant to this review

Other bias

Unclear risk

Baseline characteristics comparable, although participants in intervention group transferred to theatre more quickly ‐ unclear how this affected results

Schultz 1985

Methods

Study design: randomized controlled trial

Study grouping: parallel group

Participants

Baseline characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Age: 78 (range 40 to 95) years

  • Gender (M/F): 10/25

Protocol using standard measures

  • Age: 67 (range 40 to 89) years

  • Gender (M/F): 17/18

Included criteria: intracapsular and extracapsular hip fractures; specifics not described

Excluded criteria: not described

Sponsorship source: no details

Country:: Westchester County Medical Centre, New York, USA

Setting: single centre, hospital

Interventions

Intervention characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Type of anaesthetic: not stated, but assumed to be general

  • Type of fixation/surgery: Extracapsular fractures underwent open reduction and internal fixation with a sliding compression screw and a side plate; intracapsular fractures were treated by hemiarthroplasty

  • Number randomized to group: 70

  • Description of monitoring: Swan‐Ganz catheter was inserted, and systolic pressures in RA, RV and PA and PA wedge pressures were measured. Cardiac output was optimized with fluids; exact methods were unclear. Repeated until 1 to 2 days after surgery

Protocol using standard measures

  • Type of anaesthetic: not stated, but assumed to be general

  • Type of fixation/surgery: Extracapsular fractures underwent open reduction and internal fixation with a sliding compression screw and a side plate; intracapsular fractures were treated by hemiarthroplasty

  • Number randomized to group: 70

  • Description of monitoring: CVP inserted; fluids as per protocol; exact management unclear

Outcomes

Dichotomous

  • Mortality ‐ time point not defined

Adverse events

  • Wound infection, pneumonia, dislocated prosthesis, pneumonitis, decubitus ulcer

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

High risk

Paper states that participants were assigned on a random basis on admission to hospital. No details given. Large differences in groups at baseline

Allocation concealment (selection bias)

Unclear risk

No details given

Blinding of participants and personnel (performance bias)
All outcomes

Unclear risk

No information about whether clinical staff in operating theatre or on ward were aware of participant allocation. Unclear whether knowledge of group allocation would have affected performance. Intervention not clearly defined

Blinding of outcome assessment (detection bias)
Mortality / adverse outcomes

Unclear risk

No information about how outcomes were assessed; no definitions

Blinding of outcome assessment (detection bias)
Length of stay

Unclear risk

Outcome not reported

Incomplete outcome data (attrition bias)
All outcomes

Low risk

All randomly assigned participants included in analyses. No information about exclusions due to deviations from protocol

Selective reporting (reporting bias)

Unclear risk

Outcomes not fully described

Other bias

High risk

Serious baseline imbalances between monitored and non‐monitored group raise questions about the randomization procedure; methods not fully clear; outcomes not fully defined

Sinclair 1997

Methods

Study design: randomized controlled trial

Study grouping: parallel group

Participants

Baseline characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Age: median 74 (IQR 70.5 to 82) years

  • ASA status: median I2 (IQR 2 to 3)

Usual care

  • Age: median 75.57 (IQR 69 to 80) years

  • ASA status: median 2 (IQR 2 to 3)

Country: London, UK

Setting: single centre, teaching hospital

Included criteria: adult patients with fractures of the femoral neck

Excluded criteria: age < 55 years, fracture secondary to neoplasm, fractures occurring during hospitalization for acute illness, fracture through the site of a previous surgical correction or associated with instability of a previous prosthesis, planned regional anaesthesia (this would preclude the planned intervention)

Interventions

Intervention characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Type of anaesthetic: general anaesthetic

  • Type of fixation/surgery: dynamic hip screw (± plate) 8, AO cannulated screw 4, arthroplasty 8

  • Number randomized to group: 20

  • Description of monitoring: as for usual care plus protocol‐guided colloid fluid challenges monitored by oesophageal Doppler ultrasonography to optimize cardiac stroke volume

Usual care

  • Type of anaesthetic: not stated, but assumed to be general

  • Type of fixation/surgery: dynamic hip screw (± plate) 10, AO cannulated screw 3, arthroplasty 7

  • Number randomized to group: 20

  • Description of monitoring: GA plus conventional intraoperative fluid replacement. Oesophageal Doppler monitoring of fluid given and cardiovascular variables monitored

Outcomes

Continuous

  • Total length of hospital stay

  • Time until medically fit for discharge

Dichotomous

  • Mortality at 30 days (also data for death at 36 days, 65 days)

Adverse events

  • Pneumonia and congestive cardiac failure, bronchopneumonia (both given as causes for mortality in 2 participants). Adverse events not reported for all other participants

  • Change in intraoperative physiological parameters: stroke volume, corrected flow time, cardiac output, fluid per minute of surgery

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Unclear risk

No details of randomization process given

Allocation concealment (selection bias)

Unclear risk

Not clear whether sequentially numbered, opaque, sealed envelopes were used

Blinding of participants and personnel (performance bias)
All outcomes

Unclear risk

Anaesthetist blinded to Doppler measurements but aware of fluid challenges and therefore likely to know the allocation ‐ probably the surgeon as well. Unclear whether this could have affected performance of anaesthetist. Other medical and nursing staff unaware of randomization of participants

Blinding of outcome assessment (detection bias)
Mortality / adverse outcomes

Low risk

Medical and nursing staff unaware of randomization of participants

Blinding of outcome assessment (detection bias)
Length of stay

Low risk

No discharge criteria given, but staff were blinded; therefore unlikely to bias results

Incomplete outcome data (attrition bias)
All outcomes

Unclear risk

Numbers in each group included in Results unclear. No details about losses to follow‐up

Selective reporting (reporting bias)

Low risk

All expected outcomes reported, but length of stay reported in chart as median and IQR

Other bias

Low risk

Study groups similar at baseline

Venn 2002

Methods

Study design: randomized controlled trial

Study grouping: parallel group

Participants

Baseline characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Age: mean 82.0 (SD 8.7) years

  • Gender (M/F): 6/24

  • ASA status: median 3 (IQR 2.5 to 3)

Protocol using standard measures

  • Age: mean 85.0 (SD 6.2) years

  • Gender (M/F): 4/27

  • ASA status: median 3 (IQR 3 to 4)

Usual care

  • Age: mean 84.5 (SD 9.3) years

  • Gender (M/F): 6/23

  • ASA status: median 3 (IQR 3 to 4)

Included criteria: adult patients undergoing repair of PFF under general anaesthesia

Excluded criteria: age < 65 years, fracture secondary to neoplasm, oesophageal pathology, patients with central venous cannula in situ, planned regional anaesthesia (this would preclude 1 of the planned interventions)

Sponsorship source: no details

Country: London, UK

Setting: single centre, teaching hospital

Interventions

Intervention characteristics

Advanced invasive haemodynamic monitoring goal directed

  • Type of anaesthetic: general

  • Type of fixation/surgery: dynamic hip screw 13, arthroplasty 14, AO screw 3

  • Number randomized to group: 30

  • Description of monitoring: GA and conventional fluid management plus fluid challenges guided by oesophageal Doppler measurements, as per protocol

Protocol using standard measures

  • Type of anaesthetic: general

  • Type of fixation/surgery: dynamic hip screw 21, arthroplasty 9, AO screw 0

  • Number randomized to group: 31

  • Description of monitoring: GA and conventional fluid management plus intraoperative fluid challenges guided by central venous pressure, as per protocol

Usual care

  • Type of anaesthetic: general

  • Type of fixation/surgery: dynamic hip screw 11, arthroplasty 17, AO screw 1

  • Number randomized to group: 29

  • Description of monitoring: GA and conventional intraoperative fluid management

Outcomes

Continuous

  • Total length of hospital stay

  • Time to medical fitness for discharge

Dichotomous

  • Mortality at 30 days

Adverse events

  • Deep haemorrhage, haematemesis, chest infection, wound infection, urinary tract infection, cellulitis, pancreatitis, pulmonary embolus, cerebrovascular accident, myocardial infarction, cardiac failure, rapid atrial fibrillation, hypotension, impaired renal function, pseudo‐obstruction

  • Difference in intraoperative CVP measurements (not including Doppler group)

Notes

Risk of bias

Bias

Authors' judgement

Support for judgement

Random sequence generation (selection bias)

Low risk

Computer‐generated random numbers

Allocation concealment (selection bias)

Unclear risk

Not clear whether sequentially numbered, opaque, sealed envelopes were used

Blinding of participants and personnel (performance bias)
All outcomes

Unclear risk

Anaesthetist (and surgeon) aware of fluid challenges and allocation of participants. Unclear whether this could have affected performance of personnel "Postoperative management was performed by orthopaedic medical team and nursing staff who were unaware of patient's randomization"

Blinding of outcome assessment (detection bias)
Mortality / adverse outcomes

Low risk

Medical and nursing staff unaware of randomization of participants

Blinding of outcome assessment (detection bias)
Length of stay

Low risk

No discharge criteria given, but staff were blinded; therefore, unlikely to bias results

Incomplete outcome data (attrition bias)
All outcomes

Low risk

1 participant in CVP group underwent intramedullary nailing but was included in ITT analyses. No losses to follow‐up were reported

Selective reporting (reporting bias)

Low risk

All expected outcomes reported

Other bias

Low risk

Study groups similar at baseline

AM: Austin Moore uncemented hemiarthroplasty; AO: Association for the Study of Internal Fixation; ASA: American Society of Anesthesiologists (physical status classification system); BMI: body mass index; CVP: central venous pressure; DHS: dynamic hip screw; ETS: Exeter trauma stem‐cemented hemiarthroplasty; F: female; GA: general anaesthesia; GDHT: goal‐directed haemodynamic treatment; ITT: intention‐to‐treat; IQR: interquartile range; kg: kilograms; M: male; NIHR: National Institute for Health Research; PA: pulmonary artery; PFF: proximal femoral fracture; RA: right atrial; RIFLE: Risk/Injury/Failure/Loss/End‐stage (classification system for acute kidney injury); RV: right ventricle; SD: standard deviation; TFN: trochanteric femoral nail

Characteristics of excluded studies [ordered by study ID]

Study

Reason for exclusion

Carson 1998

Wrong intervention ‐ Hb targeting, not fluid optimization

Carson 2006

Wrong intervention. Study concentrates on titration of Hb levels rather than on optimization of fluid status

Choong 2000

Wrong intervention

Eneroth 2005

Wrong intervention. Both groups had identical fluid regimen intraoperatively

Fathi 2013

Wrong intervention ‐ designed to compare the effects of Ringer`s lactate and hydroxyethyl starch 6% on haemodynamic parameters after spinal anaesthesia

Gan 2002

Wrong participants ‐ elective surgery; no orthopaedic participants

Lopes 2007

Only 1 participant in study may have undergone PFF surgery (unclear) and was assigned to the control group. Would not be appropriate to include such a small sample

Messina 2013

Wrong intervention ‐ comparison of spinal and general anaesthesia for participants with femoral fracture

Rowlands 2013

Wrong intervention ‐ effect of iron infusions on postoperative transfusion requirements for participants with femoral fracture

Swanson 1998

Wrong intervention

Wilson 1999

No participants with PFF (all general/vascular/urological surgery)

Hb: haemoglobin; PFF: proximal femoral fracture

Characteristics of studies awaiting assessment [ordered by study ID]

Sandham 2003

Methods

Publication type: full article

Allocation random: by computer‐generated sequence

Allocation concealment: sequentially numbered opaque, sealed envelopes

Baseline comparison: yes

Baseline similarity: yes

Blinding of caregivers: not considered feasible by investigators

Additional features to blind fluid administered: not considered feasible

Control of co‐interventions: not described

Completeness of follow up: yes ‐ to hospital discharge

Intention‐to‐treat analysis: yes

Participants

Location: Canada

Centre: 19 centres

Language: English

Inclusion criteria: adults undergoing high‐risk, urgent or elective major thoracic/abdominal/vascular/orthopaedic surgery, then ICU stay

Exclusion criteria: nil specified

Age: 60 years or older

ASA grade: III to IV

Surgery type: not specified

Interventions

PAC group: goal‐directed fluid therapy, using PAC according to protocol to optimize oxygen delivery

Control group: standard fluid therapy

Outcomes

In‐hospital all‐cause mortality

6‐Month mortality

12‐Month mortality

Length of stay

Iatrogenic complications: wound infections; problems due to line insertion

Cardiopulmonary complications: myocardial infarction, left ventricular failure, arrhythmia, pneumonia, pulmonary embolism

Other complications: renal/liver insufficiency, sepsis

Notes

To date, unable to contact study authors to obtain outcome data regarding hip fracture subgroup. If these data become available, this study will be included

Vanakas 2012

Methods

Randomized single‐blind controlled trial

Parallel design

Participants

Location: Greece

Inclusion criteria: patients undergoing femoral fracture repair under spinal anaesthesia

Number of participants: 20

Interventions

Advanced haemodynamic monitoring: goal‐directed therapy, participants connected to Flo Trac/Vigileo haemodynamic monitoring system to measure cardiac output

Control: standard monitoring

Outcomes

Duration of hospital stay

Notes

Abstract only. Unable to contact study authors to obtain outcome data

ASA: American Society of Anesthesiologists (physical status classification system); PAC: pulmonary artery catheter

.

Characteristics of ongoing studies [ordered by study ID]

NCT02382185

Trial name or title

Non‐invasive cardiac output monitoring to guide goal‐directed fluid therapy in high‐risk patients undergoing urgent surgical repair of proximal femoral fractures (ClearNOF)

Methods

Randomized single‐blind controlled trial

Participants

Adults (50 years or older) due to undergo urgent or emergency repair of proximal femoral fracture

Interventions

Non‐invasive cardiac monitoring device (Clearsight) vs usual care

Outcomes

Incidence of major and minor complications

Morbidity at day 3, 5 and 10

Length of stay

Time to drinking/eating/mobilization

Change in perioperative haemodynamic variables (heart rate, blood pressure, stroke volume)

Hypotension

Total dose of vasopressor

Starting date

January 2015

Contact information

Simon Davies; York Teaching Hospitals NHS Foundation Trust

Notes

Estimated enrolment: 250

Data and analyses

Open in table viewer
Comparison 1. Advanced haemodynamic monitoring versus protocol using standard measures

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 All‐cause mortality Show forest plot

3

280

Risk Ratio (M‐H, Random, 95% CI)

0.41 [0.14, 1.20]

Analysis 1.1

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 1 All‐cause mortality.

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 1 All‐cause mortality.

2 Adverse outcomes Show forest plot

3

280

Risk Ratio (M‐H, Random, 95% CI)

0.83 [0.59, 1.17]

Analysis 1.2

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 2 Adverse outcomes.

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 2 Adverse outcomes.

2.1 Any complications, including minor

3

280

Risk Ratio (M‐H, Random, 95% CI)

0.83 [0.59, 1.17]

Open in table viewer
Comparison 2. Advanced haemodynamic monitoring versus usual care

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 All‐cause mortality Show forest plot

3

213

Risk Ratio (M‐H, Random, 95% CI)

0.45 [0.07, 2.95]

Analysis 2.1

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 1 All‐cause mortality.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 1 All‐cause mortality.

2 Total length of hospital stay Show forest plot

2

173

Mean Difference (IV, Fixed, 95% CI)

0.63 [‐1.70, 2.96]

Analysis 2.2

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 2 Total length of hospital stay.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 2 Total length of hospital stay.

3 Days until medically fit for discharge Show forest plot

2

173

Mean Difference (IV, Fixed, 95% CI)

‐0.01 [‐1.74, 1.71]

Analysis 2.3

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 3 Days until medically fit for discharge.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 3 Days until medically fit for discharge.

4 Adverse outcomes Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

Analysis 2.4

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 4 Adverse outcomes.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 4 Adverse outcomes.

4.1 Neurological

2

173

Risk Ratio (M‐H, Random, 95% CI)

1.10 [0.56, 2.18]

4.2 Any complications, including minor

2

173

Risk Ratio (M‐H, Random, 95% CI)

0.72 [0.40, 1.31]

Study flow diagram. Updated search October 2012 to January 2015.
Figuras y tablas -
Figure 1

Study flow diagram. Updated search October 2012 to January 2015.

Risk of bias graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 2

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

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 3

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

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 1 All‐cause mortality.
Figuras y tablas -
Analysis 1.1

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 1 All‐cause mortality.

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 2 Adverse outcomes.
Figuras y tablas -
Analysis 1.2

Comparison 1 Advanced haemodynamic monitoring versus protocol using standard measures, Outcome 2 Adverse outcomes.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 1 All‐cause mortality.
Figuras y tablas -
Analysis 2.1

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 1 All‐cause mortality.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 2 Total length of hospital stay.
Figuras y tablas -
Analysis 2.2

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 2 Total length of hospital stay.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 3 Days until medically fit for discharge.
Figuras y tablas -
Analysis 2.3

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 3 Days until medically fit for discharge.

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 4 Adverse outcomes.
Figuras y tablas -
Analysis 2.4

Comparison 2 Advanced haemodynamic monitoring versus usual care, Outcome 4 Adverse outcomes.

Summary of findings for the main comparison. Advanced haemodynamic monitoring compared with protocol using standard measures such as CVP for proximal femoral fracture

Advanced haemodynamic monitoring compared with protocol using standard measures such as CVP for proximal femoral fracture

Patient or population: patients with proximal femoral fracture
Setting: hospital
Intervention: advanced haemodynamic monitoring
Comparison: protocol using standard measures such as CVP

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

Number of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Protocol using standard measures such as CVP

Advanced haemodynamic monitoring

All‐cause mortality
Advanced haemodynamic monitoring
Follow‐up: 30 days

Study population

RR 0.41
(0.14 to 1.2)

280
(3 studies)

⊕⊝⊝⊝
Very lowa,b,c

142 per 1000

58 per 1000
(20 to 170)

Moderate

Total length of hospital stay

Not estimabled

203
(2 studies)

⊕⊕⊝⊝
Lowc,d

Data reported as median (range) in Bartha 2013 and as mean (95% confidence interval) in Venn 2002

Medically fit for discharge

Mean medically fit for discharge in the intervention groups was
7.7 higher
(5.9 to 0 higher)

90
(1 study)

⊕⊕⊝⊝
Lowe

Return to pre‐fracture accommodation/return to pre‐fracture mobility

Not estimable

Not reported

Adverse outcomes ‐ cardiopulmonary

Study population

Not estimable

0
(0)

Moderate

Adverse outcomes ‐ neurological

Not estimable

0
(0)

Adverse outcomes ‐ all

Study population

RR 0.90
(0.37 to 2.18)

280
(3 studies)

⊕⊝⊝⊝
Very lowa,b,c

319 per 1000

287 per 1000
(118 to 696)

Moderate

*The basis for the assumed risk (e.g. median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI)
CI: confidence interval; CVP: central venous pressure; RR: risk ratio

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.

aConcerns about randomization process in Schultz 1985; high risk of selection bias
bConfidence intervals cross no effect and are consistent with increased as well as decreased risk. Downgraded 1 level
cEstimate from few studies or from 1 study only. Downgraded 1 level
dNot possible to combine data. Wide confidence interval in Venn 2002 and wide range reported in Bartha 2013. Downgraded 1 level

eData from 1 study only. Downgraded 2 levels

Figuras y tablas -
Summary of findings for the main comparison. Advanced haemodynamic monitoring compared with protocol using standard measures such as CVP for proximal femoral fracture
Summary of findings 2. Advanced haemodynamic monitoring compared with usual care for perioperative fluid optimization

Advanced haemodynamic monitoring compared with usual care for perioperative fluid optimization

Patient or population: patients with perioperative fluid optimization
Settings: hospital
Intervention: advanced haemodynamic monitoring
Comparison: usual care

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

Number of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Usual care

Advanced haemodynamic monitoring

All‐cause mortality

Study population

RR 0.45
(0.07 to 2.95)

213
(3 studies)

⊕⊕⊝⊝
Lowa,b

89 per 1000

40 per 1000
(6 to 263)

Moderate

Total length of hospital stay

Mean total length of hospital stay in the control groups was
number of days

Mean total length of hospital stay in the intervention groups was
0.63 higher
(1.7 lower to 2.96 higher)

175
(2 studiesc)

⊕⊕⊝⊝
Lowa,b

Medically fit for discharge

Mean medically fit for discharge in the control groups was
number of days

Mean medically fit for discharge in the intervention groups was
0.01 higher
(1.74 lower to 1.71 higher)

175
(2 studiesd)

⊕⊕⊝⊝
Lowa,b

Return to pre‐fracture accommodation/return to pre‐fracture mobility

Study population

Not estimable

114
(1 study)

⊕⊕⊝⊝
Lowb

397 per 1000

0 per 1000
(0 to 0)

Moderate

Adverse outcomes ‐ cardiopulmonary

Study population

Not estimable

0
(0)

Moderate

Adverse outcomes ‐ neurological

Study population

RR 1.10
(0.56 to 2.18)

173
(2 studies)

⊕⊕⊝⊝
Lowa,b

152 per 1000

170 per 1000
(1000 to 336)

Moderate

Adverse outcomes ‐ all

Study population

RR 0.78
(0.57 to 1.05)

173
(2 studies)

⊕⊕⊝⊝
Lowa,b

554 per 1000

432 per 1000
(316 to 582)

Moderate

*The basis for the assumed risk (e.g. median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI)
CI: confidence interval; RR: risk ratio

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

aConfidence intervals cross no effect and are consistent with increased as well as decreased risk. Downgraded 1 level
bEstimate from only 1 or a few studies. Downgraded 1 level
cData for Sinclair 1997 not included in meta‐analysis. Study authors report a reduction of 8 days in total hospital stay (from 20 to 12) in the advanced haemodynamic group (P value < 0.05)
dData for Sinclair 1997 not included in meta‐analysis. Study authors report a reduction of 5 days in median time to fitness for discharge (from 15 to 10 days)

Figuras y tablas -
Summary of findings 2. Advanced haemodynamic monitoring compared with usual care for perioperative fluid optimization
Summary of findings 3. Protocol using standard measures such as CVP compared with usual care for perioperative fluid optimization

Protocol using standard measures such as CVP compared with usual care for perioperative fluid optimization

Patient or population: patients with perioperative fluid optimization
Setting: hospital
Intervention: protocol using standard measures such as CVP
Comparison: usual care

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

Number of participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

Usual care

Protocol using standard measures such as CVP

All‐cause mortality

Study population

RR 2.81
(0.61 to 12.81)

60
(1 study)

⊕⊕⊝⊝
Lowa,b

69 per 1000

194 per 1000
(42 to 883)

Moderate

Total length of hospital stay

Mean total length of hospital stay in the control groups was
4.2 days

Mean total length of hospital stay in the intervention groups was
4.20 lower
(11.0 lower to 2.6 higher)

60
(1 study)

⊕⊕⊝⊝
Lowa,b

Medically fit for discharge

Mean medically fit for discharge in the intervention groups was
3.90 lower
(7.05 to 0.75 lower)

60
(1 study)

⊕⊕⊕⊝
Moderateb

Return to pre‐fracture accommodation/return to pre‐fracture mobility

Not estimable

Not reported

Adverse outcomes ‐ cardiopulmonary

Study population

Not estimable

0
(0)

Not reported

Moderate

Adverse outcomes ‐ neurological

Study population

RR 0.94
(0.06 to 14.27)

60
(1 study)

⊕⊕⊝⊝
Low

34 per 1000

32 per 1000
(2 to 492)

Moderate

Adverse outcomes ‐ all

Study population

RR 0.53
(0.26 to 1.08)

60
(1 study)

⊕⊕⊝⊝
Lowa,b

483 per 1000

256 per 1000
(126 to 521)

Moderate

*The basis for the assumed risk (e.g. median control group risk across studies) is provided in footnotes. The corresponding risk (and its 95% confidence interval) is based on the assumed risk in the comparison group and the relative effect of the intervention (and its 95% CI)
CI: confidence interval; CVP: central venous pressure; RR: risk ratio

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

aBased on 1 study with a small number of events. Wide confidence intervals consistent with increased as well as decreased risk. Downgraded by 1 level
bBased on 1 study with a small number of participants. Downgraded by 1 level

Figuras y tablas -
Summary of findings 3. Protocol using standard measures such as CVP compared with usual care for perioperative fluid optimization
Table 1. Adverse events. Comparison 1. Advanced haemodynamic monitoring versus protocol using standard measures

Study ID

Adverse events

Advanced haemodynamic monitoring

Protocol using standard measures

Bartha 2013

n = 74

n = 75

Cardiopulmonary

Cardiovascular 5

Respiratory 5

Cardiovascular 6

Respiratory 7

Neurological

Cerebrovascular 0

Confusion 3

Cerebrovascular 2

Confusion 6

Other

Acute kidney failure 1

Gastrointestinal bleeding 0

Sepsis 2

Deep vein thrombosis 0

Wound infection 2

Delayed healing 0

Urinary tract infection 16

Decubitus 6

Wound haematoma 0

Other 4

Acute kidney failure 1

Gastrointestinal bleeding 0

Sepsis 0

Deep vein thrombosis 0

Wound infection 1

Delayed healing 0

Urinary tract infection 12

Decubitus 1

Wound haematoma 1

Other 6

Schultz 1985

n = 35

n = 35

Other

Pneumonia 1

Wound infection 1

Pneumonitis 1

Pneumonia 2

Decubitis ulcer 1

Venn 2002

n = 30

n = 31

Cardiopulmonary

Chest infection 2

Pulmonary embolus 1

Myocardial infarction 0

Cardiac failure 0

Rapid atrial fibrillation 3

Hypotension 0

Chest infection 3

Pulmonary embolus 0

Myocardial infarction 1

Cardiac failure 1

Rapid atrial fibrillation 1

Hypotension 0

Neurological

Cerebrovascular accident 2

Cerebrovascular accident 1

Other

Deep haemorrhage 1

Haematemesis 0

Wound infection 0

Urinary tract infection 2

Cellulitis 0

Pancreatitis 0

Hypotension 0

Impaired renal function 0

Pseudo‐obstruction 0

Deep haemorrhage 0

Haematemesis 0

Wound infection 0

Urinary tract infection 1

Cellulitis 1

Pancreatitis 0

Hypotension 0

Impaired renal function 0

Pseudo‐obstruction 1

Figuras y tablas -
Table 1. Adverse events. Comparison 1. Advanced haemodynamic monitoring versus protocol using standard measures
Table 2. Adverse events. Comparison 2. Advanced haemodynamic monitoring versus usual care

Study ID

Adverse events

Advanced haemodynamic monitoring

Usual care

Moppett 2014

n = 51

n = 63

Cardiopulmonary

Cardiovascular 8

Respiratory 0

Cardiovascular 6

Respiratory 0

Neurological

Acute delirium 11

Acute delirium 13

Other

Infectious 21

Abdominal 2

Bleeding 0

Skin 0

Renal (RIFLE) 18*

Other 3

Infectious 34

Abdominal 1

Bleeding 0

Skin 0

Renal (RIFLE) 32*

Other 3

Venn 2002

n = 30

n = 29

Cardiopulmonary

Chest infection 2

Pulmonary embolus 1

Myocardial infarction 0

Cardiac failure 0

Rapid atrial fibrillation 3

Hypotension 0

Chest infection 5

Pulmonary embolus 0

Myocardial infarction 0

Cardiac failure 0

Rapid atrial fibrillation 2

Hypotension 3

Neurological

Cerebrovascular accident 2

Cerebrovascular accident 1

Other

Deep haemorrhage 1

Haematemesis 0

Wound infection 0

Urinary tract infection 2

Cellulitis 0

Pancreatitis 0

Hypotension 0

Impaired renal function 0

Pseudo‐obstruction 0

Deep haemorrhage 1

Haematemesis 1

Wound infection 2

Urinary tract infection 3

Cellulitis 0

Pancreatitis 1

Hypotension 3

Impaired renal function 2

Pseudo‐obstruction 0

*RIFLE scores sum of patients at risk, injury or failure

Figuras y tablas -
Table 2. Adverse events. Comparison 2. Advanced haemodynamic monitoring versus usual care
Table 3. Comparison 3. Protocol using standard measures versus usual care (Venn 2002)

Outcomes reported in

Venn 2002: comparison 3

Protocol ‐

CVP

N = 31

Standard care

 

N = 29

Effect estimate

(95% CI)

 

Mean

SD

Mean

SD

Mean difference

Length of hospital stay (days)

13.3

12.1

17.5

13.8

‐4.20 (‐11.0 to 2.60)

Time to fitness to discharge

10

5.3

13.9

6.6

‐3.90 (‐7.05 to ‐0.75)

 

 

 

 

 

 

 

Events

 

Events

 

MH relative risk

Mortality

6

 

2

 

2.81 (0.61 to 12.81)

Adverse events

 

 

 

 

 

·        Cardiopulmonary ‐ episodes

6

 

7

 

N/A

·        Neurological ‐ participants

1

 

1

 

0.94 (0.06 to 14.27)

·        Any, including minor ‐ participants

8

 

14

 

0.53 (0.26 to 1.08)

Figuras y tablas -
Table 3. Comparison 3. Protocol using standard measures versus usual care (Venn 2002)
Comparison 1. Advanced haemodynamic monitoring versus protocol using standard measures

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 All‐cause mortality Show forest plot

3

280

Risk Ratio (M‐H, Random, 95% CI)

0.41 [0.14, 1.20]

2 Adverse outcomes Show forest plot

3

280

Risk Ratio (M‐H, Random, 95% CI)

0.83 [0.59, 1.17]

2.1 Any complications, including minor

3

280

Risk Ratio (M‐H, Random, 95% CI)

0.83 [0.59, 1.17]

Figuras y tablas -
Comparison 1. Advanced haemodynamic monitoring versus protocol using standard measures
Comparison 2. Advanced haemodynamic monitoring versus usual care

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 All‐cause mortality Show forest plot

3

213

Risk Ratio (M‐H, Random, 95% CI)

0.45 [0.07, 2.95]

2 Total length of hospital stay Show forest plot

2

173

Mean Difference (IV, Fixed, 95% CI)

0.63 [‐1.70, 2.96]

3 Days until medically fit for discharge Show forest plot

2

173

Mean Difference (IV, Fixed, 95% CI)

‐0.01 [‐1.74, 1.71]

4 Adverse outcomes Show forest plot

2

Risk Ratio (M‐H, Random, 95% CI)

Subtotals only

4.1 Neurological

2

173

Risk Ratio (M‐H, Random, 95% CI)

1.10 [0.56, 2.18]

4.2 Any complications, including minor

2

173

Risk Ratio (M‐H, Random, 95% CI)

0.72 [0.40, 1.31]

Figuras y tablas -
Comparison 2. Advanced haemodynamic monitoring versus usual care