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Información

DOI:
https://doi.org/10.1002/14651858.CD000084.pub3Copiar DOI
Base de datos:
  1. Cochrane Database of Systematic Reviews
Versión publicada:
  1. 29 julio 2015see what's new
Tipo:
  1. Intervention
Etapa:
  1. Review
Grupo Editorial Cochrane:
  1. Grupo Cochrane de Embarazo y parto

Copyright:
  1. Copyright © 2015 The Cochrane Collaboration. Published by John Wiley & Sons, Ltd.

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Autores

  • Eileen K Hutton

    Correspondencia a: Department of Obstetrics and Gynecology, McMaster University, Hamilton, Canada

    [email protected]

  • G Justus Hofmeyr

    Department of Obstetrics and Gynaecology, Frere Hospital, Walter Sisulu University, University of the Witwatersrand, Eastern Cape Department of Health, East London, South Africa

  • Therese Dowswell

    Cochrane Pregnancy and Childbirth Group, Department of Women's and Children's Health, The University of Liverpool, Liverpool, UK

Contributions of authors

GJ Hofmeyr prepared the initial review of this topic. E Hutton has revised and will maintain the review. T Dowswell was involved in updating the review.

Sources of support

Internal sources

  • (GJH) Effective Care Research Unit, University of the Witwatersrand/Fort Hare, Eastern Cape Department of Health, South Africa.

  • (TD) Cochrane Pregnancy and Childbirth Group, Department of Women's and Children's Health, The University of Liverpool, Liverpool, UK.

External sources

  • National Institute for Health Research (NIHR), UK.

    NIHR Cochrane Programme Grant Project: 13/89/05 – Pregnancy and childbirth systematic reviews to support clinical guidelines

Declarations of interest

E Hutton is an author of two of the included trials (Hutton 2003; Hutton 2011) but was not involved in data extraction or assessment of risk of bias for these trials.

Justus Hofmeyr: I have received royalties for three chapters that I have authored in Up‐to‐date (http://www.uptodate.com/contents/search).

  • http://www.uptodate.com/contents/external‐cephalic‐version

  • http://www.uptodate.com/contents/overview‐of‐breech‐presentation

  • http://www.uptodate.com/contents/delivery‐of‐the‐fetus‐in‐breech‐presentation

Therese Dowswell: I am employed by the University of Liverpool on an NIHR Cochrane Programme grant to work on a range of Cochrane Reviews. The Funders have no influence on the content or conclusions of the reviews that I work on.

Acknowledgements

T Dowswell is supported by the NIHR Cochrane Programme Grant Project: 13/89/05 – Pregnancy and childbirth systematic reviews to support clinical guidelines.

As part of the pre‐publication editorial process, this review has been commented on by three peers (an editor and two referees who are external to the editorial team) and the Group's Statistical Adviser.

This project was supported by the National Institute for Health Research, via Cochrane Infrastructure and Cochrane programme Grant funding to Cochrane Pregnancy and Childbirth. The views and opinions expressed therein are those of the authors and do not necessarily reflect those of the Systematic Reviews Programme, NIIHR, NHS or the Department of Health.

Version history

Published

Title

Stage

Authors

Version

2015 Jul 29

External cephalic version for breech presentation before term

Review

Eileen K Hutton, G Justus Hofmeyr, Therese Dowswell

https://doi.org/10.1002/14651858.CD000084.pub3

2006 Jan 25

External cephalic version for breech presentation before term

Review

Eileen K Hutton, G Justus Hofmeyr

https://doi.org/10.1002/14651858.CD000084.pub2

1996 Apr 22

External cephalic version for breech presentation before term

Review

G Justus Hofmeyr

https://doi.org/10.1002/14651858.CD000084

Differences between protocol and review

The protocol for this review was modified in April 2005 to include comparisons of external cephalic version (ECV) commenced before term but continued if necessary up to term.

In this updated version of the review two additional primary outcomes have been added. The purpose of ECV is to avoid a caesarean birth or a breech vaginal birth; we have therefore added a new composite outcome: cephalic vaginal birth not achieved (caesarean section + breech vaginal birth). The individual outcomes are presented separately; vaginal breech birth is now reported, caesarean section was one of the original outcomes. In this version we have also added an additional secondary outcome: Infant Apgar score < seven at five minutes. Infant morbidity was not consistently reported and low infant Apgar score provides some indication of infant wellbeing at birth. We have now reported more information re neonatal outcome. We also report a non‐prespecified outcome: maternal pain scores.

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.

'Risk of bias' graph: review authors' judgements about each risk of bias item presented as percentages across all included studies.
Figuras y tablas -
Figure 1

'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 2

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

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 1 Non‐cephalic presentation at the birth.
Figuras y tablas -
Analysis 1.1

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 1 Non‐cephalic presentation at the birth.

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 2 Vaginal cephalic birth not achieved (CS + breech vaginal birth).
Figuras y tablas -
Analysis 1.2

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 2 Vaginal cephalic birth not achieved (CS + breech vaginal birth).

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 3 Caesarean section.
Figuras y tablas -
Analysis 1.3

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 3 Caesarean section.

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 4 Vaginal breech birth.
Figuras y tablas -
Analysis 1.4

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 4 Vaginal breech birth.

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 5 Apgar score < 7 at 1 minute.
Figuras y tablas -
Analysis 1.5

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 5 Apgar score < 7 at 1 minute.

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 6 Perinatal mortality.
Figuras y tablas -
Analysis 1.6

Comparison 1 External cephalic version (ECV) before term versus no ECV, Outcome 6 Perinatal mortality.

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 1 Non‐cephalic presentation at the birth.
Figuras y tablas -
Analysis 2.1

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 1 Non‐cephalic presentation at the birth.

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 2 Vaginal cephalic birth not achieved (CS + breech vaginal birth).
Figuras y tablas -
Analysis 2.2

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 2 Vaginal cephalic birth not achieved (CS + breech vaginal birth).

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 3 Caesarean section.
Figuras y tablas -
Analysis 2.3

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 3 Caesarean section.

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 4 Vaginal breech birth.
Figuras y tablas -
Analysis 2.4

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 4 Vaginal breech birth.

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 5 Apgar score < 7 at 5 minutes.
Figuras y tablas -
Analysis 2.5

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 5 Apgar score < 7 at 5 minutes.

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 6 Stillbirth and neonatal mortality < 7 days.
Figuras y tablas -
Analysis 2.6

Comparison 2 External cephalic version (ECV) commenced before term versus no ECV, Outcome 6 Stillbirth and neonatal mortality < 7 days.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 1 Non‐cephalic presentation at the birth.
Figuras y tablas -
Analysis 3.1

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 1 Non‐cephalic presentation at the birth.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 2 Vaginal cephalic birth not achieved (CS + vaginal breech birth).
Figuras y tablas -
Analysis 3.2

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 2 Vaginal cephalic birth not achieved (CS + vaginal breech birth).

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 3 Caesarean section.
Figuras y tablas -
Analysis 3.3

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 3 Caesarean section.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 4 Vaginal breech birth.
Figuras y tablas -
Analysis 3.4

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 4 Vaginal breech birth.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 5 Apgar score < 7 at 5 minutes.
Figuras y tablas -
Analysis 3.5

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 5 Apgar score < 7 at 5 minutes.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 6 Stillbirth or neonatal mortality < 7 days.
Figuras y tablas -
Analysis 3.6

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 6 Stillbirth or neonatal mortality < 7 days.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 7 Preterm birth < 37 weeks.
Figuras y tablas -
Analysis 3.7

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 7 Preterm birth < 37 weeks.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 8 One or more serious fetal complications following randomisation.
Figuras y tablas -
Analysis 3.8

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 8 One or more serious fetal complications following randomisation.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 9 NICU stay 4 days or longer.
Figuras y tablas -
Analysis 3.9

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 9 NICU stay 4 days or longer.

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 10 (Non‐prespecified outcome) Maternal pain score (0‐100; 0 = no pain).
Figuras y tablas -
Analysis 3.10

Comparison 3 External cephalic version (ECV) commenced before term versus ECV at term, Outcome 10 (Non‐prespecified outcome) Maternal pain score (0‐100; 0 = no pain).

Summary of findings for the main comparison. External cephalic version (ECV) commenced before term versus ECV at term for breech presentation before term

External cephalic version (ECV) commenced before term versus ECV at term for breech presentation before term

Population: women with breech presentation before term
Settings: 3 trials, 2 multicentre and 1 in Pakistan
Intervention: external cephalic version (ECV) commenced before term
Comparison: external cephalic version at term

Outcomes

Illustrative comparative risks* (95% CI)

Relative effect
(95% CI)

No of Participants
(studies)

Quality of the evidence
(GRADE)

Comments

Assumed risk

Corresponding risk

External cephalic version at term

External cephalic version (ECV) commenced before term

Non‐cephalic presentation at the birth

Study population

RR 0.81
(0.74 to 0.9)

1906
(3 studies)

⊕⊕⊕⊕
high

523 per 1000

424 per 1000
(387 to 471)

Moderate

517 per 1000

419 per 1000
(383 to 465)

Vaginal cephalic birth not achieved (caesarean section + vaginal breech birth)

Study population

RR 0.9
(0.83 to 0.97)

1888
(3 studies)

⊕⊕⊕⊕
high

600 per 1000

540 per 1000
(498 to 582)

Moderate

633 per 1000

570 per 1000
(525 to 614)

Caesarean section

Study population

RR 0.92
(0.85 to 1)

1888
(3 studies)

⊕⊕⊕⊕
high

565 per 1000

519 per 1000
(480 to 565)

Moderate

560 per 1000

515 per 1000
(476 to 560)

Vaginal breech birth

Study population

RR 0.44
(0.25 to 0.78)

1888
(3 studies)

⊕⊕⊕⊕
high

35 per 1000

15 per 1000
(9 to 27)

Moderate

26 per 1000

11 per 1000
(6 to 20)

Apgar score < 7 at 5 minutes

Study population

RR 1.16
(0.39 to 3.44)

1759
(2 studies)

⊕⊕⊝⊝
low1

7 per 1000

8 per 1000
(3 to 23)

Moderate

11 per 1000

13 per 1000
(4 to 38)

Perinatal mortality (Stillbirth or neonatal mortality < 7 days)

Study population

RR 0.23
(0.04 to 1.34)

1887
(3 studies)

⊕⊕⊝⊝
low1

5 per 1000

1 per 1000
(0 to 7)

Moderate

9 per 1000

2 per 1000
(0 to 12)

Preterm birth < 37 weeks

Study population

RR 1.51
(1.03 to 2.21)

1888
(3 studies)

⊕⊕⊕⊕
high

43 per 1000

66 per 1000
(45 to 96)

Moderate

44 per 1000

66 per 1000
(45 to 97)

*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;

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 Wide 95% CI crossing the line of no effect and low event rate.

Figuras y tablas -
Summary of findings for the main comparison. External cephalic version (ECV) commenced before term versus ECV at term for breech presentation before term
Comparison 1. External cephalic version (ECV) before term versus no ECV

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Non‐cephalic presentation at the birth Show forest plot

1

102

Risk Ratio (M‐H, Fixed, 95% CI)

1.04 [0.64, 1.69]

2 Vaginal cephalic birth not achieved (CS + breech vaginal birth) Show forest plot

1

102

Risk Ratio (M‐H, Fixed, 95% CI)

1.04 [0.67, 1.62]

3 Caesarean section Show forest plot

1

102

Risk Ratio (M‐H, Fixed, 95% CI)

1.82 [0.57, 5.84]

4 Vaginal breech birth Show forest plot

1

102

Risk Ratio (M‐H, Fixed, 95% CI)

0.87 [0.49, 1.52]

5 Apgar score < 7 at 1 minute Show forest plot

1

102

Risk Ratio (M‐H, Fixed, 95% CI)

0.62 [0.25, 1.59]

6 Perinatal mortality Show forest plot

1

102

Risk Ratio (M‐H, Fixed, 95% CI)

0.35 [0.04, 3.22]

Figuras y tablas -
Comparison 1. External cephalic version (ECV) before term versus no ECV
Comparison 2. External cephalic version (ECV) commenced before term versus no ECV

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Non‐cephalic presentation at the birth Show forest plot

1

179

Risk Ratio (M‐H, Fixed, 95% CI)

0.59 [0.45, 0.77]

2 Vaginal cephalic birth not achieved (CS + breech vaginal birth) Show forest plot

1

179

Risk Ratio (M‐H, Fixed, 95% CI)

0.62 [0.49, 0.80]

3 Caesarean section Show forest plot

1

179

Risk Ratio (M‐H, Fixed, 95% CI)

0.62 [0.27, 1.43]

4 Vaginal breech birth Show forest plot

1

179

Risk Ratio (M‐H, Fixed, 95% CI)

0.63 [0.46, 0.85]

5 Apgar score < 7 at 5 minutes Show forest plot

1

179

Risk Ratio (M‐H, Fixed, 95% CI)

3.03 [0.13, 73.48]

6 Stillbirth and neonatal mortality < 7 days Show forest plot

1

179

Risk Ratio (M‐H, Fixed, 95% CI)

0.34 [0.01, 8.16]

Figuras y tablas -
Comparison 2. External cephalic version (ECV) commenced before term versus no ECV
Comparison 3. External cephalic version (ECV) commenced before term versus ECV at term

Outcome or subgroup title

No. of studies

No. of participants

Statistical method

Effect size

1 Non‐cephalic presentation at the birth Show forest plot

3

1906

Risk Ratio (M‐H, Fixed, 95% CI)

0.81 [0.74, 0.90]

2 Vaginal cephalic birth not achieved (CS + vaginal breech birth) Show forest plot

3

1888

Risk Ratio (M‐H, Fixed, 95% CI)

0.90 [0.83, 0.97]

3 Caesarean section Show forest plot

3

1888

Risk Ratio (M‐H, Fixed, 95% CI)

0.92 [0.85, 1.00]

4 Vaginal breech birth Show forest plot

3

1888

Risk Ratio (M‐H, Fixed, 95% CI)

0.44 [0.25, 0.78]

5 Apgar score < 7 at 5 minutes Show forest plot

2

1759

Risk Ratio (M‐H, Fixed, 95% CI)

1.16 [0.39, 3.44]

6 Stillbirth or neonatal mortality < 7 days Show forest plot

3

1887

Risk Ratio (M‐H, Fixed, 95% CI)

0.23 [0.04, 1.34]

7 Preterm birth < 37 weeks Show forest plot

3

1888

Risk Ratio (M‐H, Fixed, 95% CI)

1.51 [1.03, 2.21]

8 One or more serious fetal complications following randomisation Show forest plot

2

1761

Risk Ratio (M‐H, Fixed, 95% CI)

0.87 [0.42, 1.79]

9 NICU stay 4 days or longer Show forest plot

1

232

Risk Ratio (M‐H, Fixed, 95% CI)

2.5 [0.49, 12.63]

10 (Non‐prespecified outcome) Maternal pain score (0‐100; 0 = no pain) Show forest plot

1

1533

Mean Difference (IV, Fixed, 95% CI)

‐4.60 [‐7.74, ‐1.46]

Figuras y tablas -
Comparison 3. External cephalic version (ECV) commenced before term versus ECV at term