Women-centred interventions to increase vaginal birth after caesarean section (VBAC): A systematic review.

OBJECTIVE: to evaluate the effectiveness of women-centred interventions during pregnancy and birth to increase rates of vaginal birth after caesarean. DESIGN: we searched bibliographic databases for randomised trials or cluster randomised trials on women-centred interventions during pregnancy and birth designed to increase VBAC rates in women with at least one previous caesarean section. Comparator groups included standard or usual care or an alternative treatment aimed at increasing VBAC rates. The methodological quality of included studies was assessed independently by two authors using the Effective Public Health Practice Project quality assessment tool. Outcome data were extracted independently from each included study by two review authors. FINDINGS: in total, 821 citations were identified and screened by title and abstract; 806 were excluded and full text of 15 assessed. Of these, 12 were excluded leaving three papers included in the review. Two studies evaluated the effectiveness of decision aids for mode of birth and one evaluated the effectiveness of an antenatal education programme. The findings demonstrate that neither the use of decision aids nor information/education of women have a significant effect on VBAC rates. Nevertheless, decision-aids significantly decrease women's decisional conflict about mode of birth, and information programmes significantly increase their knowledge about the risks and benefits of possible modes of birth. KEY CONCLUSIONS: few studies evaluated women-centred interventions designed to improve VBAC rates, and all interventions were applied in pregnancy only, none during the birth. There is an urgent need to develop and evaluate the effectiveness of all types of women-centred interventions during pregnancy and birth, designed to improve VBAC rates. IMPLICATIONS FOR PRACTICE: decision-aids and information programmes during pregnancy should be provided for women as, even though they do not affect the rate of VBAC, they decrease women's decisional conflict and increase their knowledge about possible modes of birth.

Clinician-centred interventions to increase vaginal birth after caesarean section (VBAC): a systematic review.

BACKGROUND: The number of caesarean sections (CS) is increasing globally, and repeat CS after a previous CS is a significant contributor to the overall CS rate. Vaginal birth after caesarean (VBAC) can be seen as a real and viable option for most women with previous CS. To achieve success, however, women need the support of their clinicians (obstetricians and midwives). The aim of this study was to evaluate clinician-centred interventions designed to increase the rate of VBAC. METHODS: The bibliographic databases of The Cochrane Library, PubMed, PsychINFO and CINAHL were searched for randomised controlled trials, including cluster randomised trials that evaluated the effectiveness of any intervention targeted directly at clinicians aimed at increasing VBAC rates. Included studies were appraised independently by two reviewers. Data were extracted independently by three reviewers. The quality of the included studies was assessed using the quality assessment tool, 'Effective Public Health Practice Project'. The primary outcome measure was VBAC rates. RESULTS: 238 citations were screened, 255 were excluded by title and abstract. 11 full-text papers were reviewed; eight were excluded, resulting in three included papers. One study evaluated the effectiveness of antepartum x-ray pelvimetry (XRP) in 306 women with one previous CS. One study evaluated the effects of external peer review on CS birth in 45 hospitals, and the third evaluated opinion leader education and audit and feedback in 16 hospitals. The use of external peer review, audit and feedback had no significant effect on VBAC rates. An educational strategy delivered by an opinion leader significantly increased VBAC rates. The use of XRP significantly increased CS rates. CONCLUSIONS: This systematic review indicates that few studies have evaluated the effects of clinician-centred interventions on VBAC rates, and interventions are of varying types which limited the ability to meta-analyse data. A further limitation is that the included studies were performed during the late 1980s-1990s. An opinion leader educational strategy confers benefit for increasing VBAC rates. This strategy should be further studied in different maternity care settings and with professionals other than physicians only.