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Cochrane Database of Systematic Reviews

Técnicas de estimulación de la tos para la extubación o retirada de los pacientes graves de la asistencia respiratoria mecánica

Información

DOI:
https://doi.org/10.1002/14651858.CD011833.pub2Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 11 enero 2017see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Atención crítica y de emergencia

Copyright:
  1. Copyright © 2019 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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Autores

  • Louise Rose

    Correspondencia a: Department of Critical Care Medicine, Sunnybrook Health Sciences Centre and Sunnybrook Research Institute, Toronto, Canada

    [email protected]

  • Neill KJ Adhikari

    Interdepartmental Division of Critical Care, University of Toronto, Toronto, Canada

    Department of Critical Care Medicine and Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Canada

  • David Leasa

    Critical Care, Department of Medicine, London Health Sciences Centre, London, Canada

  • Dean A Fergusson

    Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada

  • Douglas McKim

    Respiratory Rehabilitation and Sleep Centre, Ottawa Hospital, Ottawa, Canada

Contributions of authors

Louise Rose (LR), Neill KJ Adhikari (NA), David Leasa (DL), Dean A Fergusson (DF), Douglas McKim (DM)

Conceiving the review: LR, DM

Co‐ordinating the review: LR

Undertaking manual searches: LR

Screening search results: LR, DM

Organizing retrieval of papers: LR

Screening retrieved papers against inclusion criteria: LR, DM

Appraising quality of papers: NA, DL

Abstracting data from papers: NA, DL

Writing to authors of papers for additional information: LR

Providing additional data about papers: LR

Obtaining and screening data on unpublished studies: LR

Data management for the review: LR

Entering data into Review Manager 5 (RevMan 2014): LR

Review Manager 5 statistical data: LR, DF

Other statistical analysis not using Review Manager 5: DF

Interpretation of data: All authors

Statistical inferences: All authors

Writing the review: All authors

Securing funding for the review: LR

Performing previous work that was the foundation of the present study: Not applicable

Guarantor for the review (one author) LR

Person responsible for reading and checking review before submission: LR

Sources of support

Internal sources

  • No sources of support supplied

External sources

  • Canadian Institutes of Health Research, Canada.

    CIHR provided funding support

Declarations of interest

Louise Rose: none to declare

Neill KJ Adhikari: none to declare

David Leasa: none to declare

Dean A Fergusson: none to declare

Douglas McKim: none to declare

Acknowledgements

We would like to thank Rodrigo Cavallazzi (content editor), Cathal Walsh (statistical editor), Antonio M Esquinas, John R Bach, Yuka Ishikawa (peer reviewers), Janet Wale (consumer editor) for their help and editorial advice during the preparation of the systematic review.

We would also like to acknowledge our Information Specialist Becky Skidmore for her invaluable assistance generating our search strategies, as well as Rodrigo Cavallazzi (content editor), Harald Herkner (statistical editor), Thomas Bongers, Yuka Ishikawa, and John Bach (peer reviewers) for their help and editorial advice during the preparation of the protocol (Rose 2015), for the systematic review.

Version history

Published

Title

Stage

Authors

Version

2017 Jan 11

Cough augmentation techniques for extubation or weaning critically ill patients from mechanical ventilation

Review

Louise Rose, Neill KJ Adhikari, David Leasa, Dean A Fergusson, Douglas McKim

https://doi.org/10.1002/14651858.CD011833.pub2

2015 Aug 10

Cough augmentation techniques for extubation and weaning critically ill patients from mechanical ventilation

Protocol

Louise Rose, Neill KJ Adhikari, David Leasa, Dean A Fergusson, Douglas McKim

https://doi.org/10.1002/14651858.CD011833

Differences between protocol and review

We added randomized cross‐over studies as an exclusion criterion, as this design does not allow determination of the efficacy of the intervention on clinical outcomes such as weaning success.

We clarified that included non‐randomized studies were those with a non‐exposed control group.

We added duration of weaning, length of stay, tracheostomy, and tracheostomy decannulation to the outcomes listed in the Outcomes section to align with our a priori set objectives.

As we had anticipated that no eligible trials would be blinded to the use of cough augmentation techniques, we added in the review that non‐blinding of personnel and participants would not necessarily be rated as high risk of bias when considering objective outcomes.

We revised the review to state that high risk of bias was defined as one or more domains (as opposed to two) scored as high risk, as this reflects the guidance in the Cochrane Handbook for Systematic Reviews of Interventions . We also clarified that unclear risk of bias also means that no domains are scored as high risk of bias.

Due to the small number of studies meeting our inclusion criteria, we could not synthesize data and conduct a meta‐analysis; assess statistical heterogeneity; perform subgroup and sensitivity analyses; and construct funnel plots to assess reporting bias, as planned in our protocol (Rose 2015).

Keywords

MeSH

PICO

Population
Intervention
Comparison
Outcome

El uso y la enseñanza del modelo PICO están muy extendidos en el ámbito de la atención sanitaria basada en la evidencia para formular preguntas y estrategias de búsqueda y para caracterizar estudios o metanálisis clínicos. PICO son las siglas en inglés de cuatro posibles componentes de una pregunta de investigación: paciente, población o problema; intervención; comparación; desenlace (outcome).

Para saber más sobre el uso del modelo PICO, puede consultar el Manual Cochrane.

Study flow diagram.
Figuras y tablas -
Figure 1

Study flow diagram.

Risk of bias summary: review authors' judgements about each risk of bias item for each included study.
Figuras y tablas -
Figure 2

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

Summary of findings for the main comparison. Summary of findings for the main comparison: cough augmentation techniques versus no cough augmentation technique

Cough augmentation techniques compared with no cough augmentation techniques for critically‐ill, mechanically‐ventilated adults and children

Patient or population: critically‐ill mechanically‐ventilated adults and children requiring extubation from mechanical ventilation

Settings: High acuity setting including ICUs, weaning centres, respiratory intermediate care units, and high‐dependency units in Europe and North America

Intervention: Cough augmentation techniques including lung volume recruitment, manually‐assisted cough and mechanical insufflation‐exsufflation

Comparison: No cough augmentation

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

No cough augmentation

Cough augmentation

Extubation successa

87%

83%

RR 1.58 (1.13 to 2.20)

75 participants
1 trial

⊕⊝⊝⊝
very low1

Duration of mechanical ventilationb

4 days

11.7 days

Mean difference ‐6.1 days (‐8.4 to ‐3.8)

75 participants
1 trial

⊕⊝⊝⊝
very low1

ICU mortalitya

28%

0%

Not calculable, as no event rates in the 1 trial reporting data on this outcome

75 participants
1 trial

⊕⊝⊝⊝
very low1

Adverse events

1. Hypotensionc

2. Hypertensiond

3. Secretion encumbrance resulting in severe hypoxaemia requiring reintubationc

12%

6.5%

9%

3%

10%

6%

RR 3.4 (0.1 to 81.3)

RR 3.0 (0.1 to 65.9)

RR 0.25 (0.1 to 1.1)

75 participants
1 trial

20 participants

1 trial

75 participants
1 trial

⊕⊝⊝⊝
very low2

*The basis for the assumed risk (e.g. the 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

aAssumed risk is derived from a large international cohort study of mechanical ventilation and weaning by Esteban 2013 and refers to the rate of reintubation reported in this study.

bAssumed risk is derived from a large international cohort study of mechanical ventilation and weaning by Esteban 2008.

cAssumed risk is derived from adverse events (hypotension and hypoxaemia) reported in a systematic review of recruitment manoeuvres in people with acute lung injury (Fan 2008).

dAssumed risk is derived from rates of hypertension noted during 6691 episodes of endotracheal suctioning (Evans 2014).

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.

1We based our downgrading decisions from high to very low on unclear risk of bias, inability to assess consistency or publication bias, and uncertainty about the estimate of effect due to the limited number of studies contributing outcome data.

2We based our downgrading decisions from high to very low on unclear risk of bias, inability to assess consistency or publication bias, imprecision due to wide confidence intervals, and uncertainty about the estimate of effect due to the limited number of studies contributing outcome data.

We have not included reintubation or weaning success in the 'Summary of findings' table as no studies reported these outcomes.

Figuras y tablas -
Summary of findings for the main comparison. Summary of findings for the main comparison: cough augmentation techniques versus no cough augmentation technique
Table 1. Table of secondary outcomes

Cough augmentation

No cough augmentation

Study

N

mean (SD)

N

mean (SD)

mean difference

95% CIs

Duration of mechanical ventilation (days)

Gonçalves 2012

35

11.7 (3.5)

40

17.8 (6.4)

‐6.1

‐8.4 to ‐3.8

ICU length of stay (days)1

Gonçalves 2012

35

16.9 (11.1)

40

19.3 (8.1)

‐2.4

‐6.9 to 2.01

Niranjan 1998

10

47.6 (7.3)

7

51.1 (7.8)

‐3.5

‐10.8 to 3.8

1The ICU length of stay for cases reported in Niranjan 1998 includes the four cases that were not intubated at the start of the study.

Figuras y tablas -
Table 1. Table of secondary outcomes
Table 2. Adverse effects

Cough augmentation

No cough augmentation

Study

Events

Total

Events

Total

RR

95% CIs

Haemodynamic compromise

Gonçalves 2012

1

35

0

40

3.4

0.1 to 81.3

Crowe 2006

1

10

0

10

3.0

0.1 to 65.9

Secretion encumbrance resulting in severe hypoxaemia requiring reintubation

Gonçalves 2012

2

35

9

40

0.25

0.1 to 1.1

Figuras y tablas -
Table 2. Adverse effects