OptiBIRTH: a cluster randomised trial of a complex intervention to increase vaginal birth after caesarean section.

BACKGROUND: Despite evidence supporting the safety of vaginal birth after caesarean section (VBAC), rates are low in many countries. METHODS: OptiBIRTH investigated the effects of a woman-centred intervention designed to increase VBAC rates through an unblinded cluster randomised trial in 15 maternity units with VBAC rates < 35% in Germany, Ireland and Italy. Sites were matched in pairs or triplets based on annual birth numbers and VBAC rate, and randomised, 1:1 or 2:1, intervention versus control, following trial registration. The intervention involved evidence-based education of clinicians and women with one previous caesarean section (CS), appointment of opinion leaders, audit/peer review, and joint discussions by women and clinicians. Control sites provided usual care. Primary outcome was annual hospital-level VBAC rates before the trial (2012) versus final year of the trial (2016). Between April 2014 and October 2015, 2002 women were recruited (intervention 1195, control 807), with mode-of-birth data available for 1940 women. RESULTS: The OptiBIRTH intervention was feasible and safe across hospital settings in three countries. There was no statistically significant difference in the change in the proportion of women having a VBAC between intervention sites (25.6% in 2012 to 25.1% in 2016) and control sites (18.3 to 22.3%) (odds ratio adjusted for differences between intervention and control groups (2012) and for homogeneity in VBAC rates at sites in the countries: 0.87, 95% CI: 0.67, 1.14, p = 0.32 based on 5674 women (2012) and 5284 (2016) with outcome data. Among recruited women with birth data, 4/1147 perinatal deaths > 24 weeks gestation occurred in the intervention group (0.34%) and 4/782 in the control group (0.51%), and two uterine ruptures (one per group), a rate of 1:1000. CONCLUSIONS: Changing clinical practice takes time. As elective repeat CS is the most common reason for CS in multiparous women, interventions that are feasible and safe and that have been shown to lead to decreasing repeat CS, should be promoted. Continued research to refine the best way of promoting VBAC is essential. This may best be done using an implementation science approach that can modify evidence-based interventions in response to changing clinical circumstances. TRIAL REGISTRATION: The OptiBIRTH trial was registered on 3/4/2013. Trial registration number ISRCTN10612254.

Factors influencing the clinical decision-making of midwives: a qualitative study.

BACKGROUND: Although midwives make clinical decisions that have an impact on the health and well-being of mothers and babies, little is known about how they make those decisions. Wide variation in intrapartum decisions to refer women to obstetrician-led care suggests that midwives' decisions are based on more than the evidence based medicine (EBM) model - i.e. clinical evidence, midwife's expertise, and woman's values - alone. With this study we aimed to explore the factors that influence clinical decision-making of midwives who work independently. METHODS: We used a qualitative approach, conducting in-depth interviews with a purposive sample of 11 Dutch primary care midwives. Data collection took place between May and September 2015. The interviews were semi-structured, using written vignettes to solicit midwives' clinical decision-making processes (Think Aloud method). We performed thematic analysis on the transcripts. RESULTS: We identified five themes that influenced clinical decision-making: the pregnant woman as a whole person, sources of knowledge, the midwife as a whole person, the collaboration between maternity care professionals, and the organisation of care. Regarding the midwife, her decisions were shaped not only by her experience, intuition, and personal circumstances, but also by her attitudes about physiology, woman-centredness, shared decision-making, and collaboration with other professionals. The nature of the local collaboration between maternity care professionals and locally-developed protocols dominated midwives' clinical decision-making. When midwives and obstetricians had different philosophies of care and different practice styles, their collaborative efforts were challenged. CONCLUSION: Midwives' clinical decision-making is a more varied and complex process than the EBM framework suggests. If midwives are to succeed in their role as promoters and protectors of physiological pregnancy and birth, they need to understand how clinical decisions in a multidisciplinary context are actually made.

Vaginal Birth After Cesarean: Views of Women From Countries With High VBAC Rates.

Despite the consequences for women's health, a repeat cesarean section (CS) birth after a previous CS is common in Western countries. Vaginal Birth After Cesarean (VBAC) is recommended for most women, yet VBAC rates are decreasing and vary across maternity organizations and countries. We investigated women's views on factors of importance for improving the rate of VBAC in countries where VBAC rates are high. We interviewed 22 women who had experienced VBAC in Finland, the Netherlands, and Sweden. We used content analysis, which revealed five categories: receiving information from supportive clinicians, receiving professional support from a calm and confident midwife/obstetrician during childbirth, knowing the advantages of VBAC, letting go of the previous childbirth in preparation for the new birth, and viewing VBAC as the first alternative for all involved when no complications are present. These findings reflect not only women's needs but also sociocultural factors influencing their views on VBAC.

The use of midwife-led primary antenatal care by obese women in The Netherlands: An explorative cohort study.

OBJECTIVE: to study the effect of body mass index (BMI) on the use of antenatal care by women in midwife-led care. DESIGN: an explorative cohort study. SETTING: 11 Dutch midwife-led practices. PARTICIPANTS: a cohort of 4421 women, registered in the Midwifery Case Registration System (VeCaS), who received antenatal care in midwife-led practices in the Netherlands and gave birth between October 2012 and October 2014. FINDINGS: the mean start of initiation of care was at 9.3 (SD 4.6) weeks of pregnancy. Multiple linear regression showed that with an increasing BMI initiation of care was significantly earlier but BMI only predicted 0.2% (R2) of the variance in initiation of care. The mean number of face-to- face antenatal visits in midwife-led care was 11.8 (SD 3.8) and linear regression showed that with increasing BMI the number of antenatal visits increased. BMI predicted 0.1% of the variance in number of antenatal visits. The mean number of antenatal contacts by phone was 2.2 (SD 2.6). Multiple linear regression showed an increased number of contacts by phone for BMI categories 'underweight' and 'obese class I'. BMI categories predicted 1% of the variance in number of contacts by phone. KEY CONCLUSIONS: BMI was not a relevant predictor of variance in initiation of care and number of antenatal visits. Obese pregnant women in midwife-led practices do not delay or avoid antenatal care. IMPLICATIONS FOR PRACTICE: Taking care of pregnant women with a high BMI does not significantly add to the workload of primary care midwives. Further research is needed to more fully understand the primary maternal health services given to obese women.

Responding to maternal distress: from needs assessment to effective intervention.

OBJECTIVES: To perform a needs assessment of maternal distress to plan the development of an intervention for the prevention and reduction of antenatal maternal distress. METHODS: We searched PubMed, OVID and EBSCO and applied the PRECEDE logic model to select the data. Experts in the field validated the findings. RESULTS: We identified 45 studies. Maternal distress was associated with diminished maternal and child's quality of life. Aetiological factors of maternal distress included past and present circumstances related to obstetric factors and to a woman's context of living, coping behaviour, and support mechanisms. Lacking knowledge of coping with (maternal) distress was identified as a predisposing factor. Reinforcing factors were relaxation, partner support, counselling experiences and positive interaction with the midwife. Enabling factors were the availability of a support network. CONCLUSIONS: When planning the development of an antenatal intervention for maternal distress, it is advisable to focus on assessment of antenatal emotional wellbeing, the context of the woman's past and present circumstances, her coping behaviour and her environment. The identified predisposing factors, enabling and reinforcing factors should also be taken into consideration.

The effect of gestational weight gain on likelihood of referral to obstetric care for women eligible for primary, midwife-led care after antenatal booking.

OBJECTIVE: to examine the effect of gestational weight gain (GWG) on likelihood of referral from midwife-led to obstetrician-led care during pregnancy and childbirth for women in primary care at the outset of their pregnancy. DESIGN: secondary analysis of data from a prospective cohort study. SETTING: Dutch midwife-led practices. PARTICIPANTS: a cohort of 1288 women of Northern European descent, with uncomplicated, singleton pregnancy at antenatal booking who consequently were eligible for primary, midwife-led care. MEASUREMENTS: because of the absence of an established GWG guideline in the Netherlands, we compared the effect of inadequate and excessive GWG according to two GWG guidelines: the criterion traditionally used, which is based on knowledge of the physiological components of GWG, advising 10-15kg as a normal GWG irrespective of a woman׳s BMI category, and the 2009 Institute of Medicine recommendations (IOMr) on GWG, which provide BMI related advice. Outcome measures were: number of women referred from midwife-led to obstetrician-led care during pregnancy and during childbirth; indications of referral and birth outcomes. FINDINGS: GWG above traditional criteria (Tc; >15kg between 12 and 36 weeks) was associated with increased odds for referral during childbirth (adjusted odds ratio (aOR) 1.88; 95% confidence interval (CI) 1.22-2.90), but had no effect on referral during pregnancy (aOR .86; 95% CI .57-1.30). No associations were established between GWG below Tc (<10kg) and referral during pregnancy (aOR 1.08; 95% CI .78-1.50) or childbirth (aOR 1.08; 95% CI .74-1.56). No associations were found between GWG below and above the IOMr and referral during pregnancy (below IOMr: aOR 1.01; 95% CI .71-1.45; above IOMr: aOR .89; 95% CI .61-1.28) or childbirth (below IOMr: aOR .85; 95% CI .57-1.25; above IOMr: aOR 1.09; 95% CI .73-1.63). With regard to the effect of GWG according to both recommendations on indications for referral and birth outcomes, GWG above Tc was associated with higher rates of referral for hypertensive disorders (aOR 1.91; 95% CI 1.04-3.50) and for meconium stained liquor (aOR 2.22; CI 1.33-3.71) after adjusting for BMI and parity. CONCLUSIONS: GWG above Tc - irrespective of BMI category - was associated with doubled odds of referral to specialist care during childbirth. GWG below or above IOMR and GWG below TC were not associated with adverse obstetric outcomes in women who were eligible for primary care at the outset of their pregnancy. IMPLICATIONS FOR PRACTICE: weight gain <15kg between 12 and 36 weeks is advised for women in all BMI categories in this population. It is important to validate GWG guidelines in a target population before implementing them.

Clinicians' views of factors of importance for improving the rate of VBAC (vaginal birth after caesarean section): a qualitative study from countries with high VBAC rates.

BACKGROUND: The most common reason for caesarean section (CS) is repeat CS following previous CS. Vaginal birth after caesarean section (VBAC) rates vary widely in different healthcare settings and countries. Obtaining deeper knowledge of clinicians' views on VBAC can help in understanding the factors of importance for increasing VBAC rates. Interview studies with clinicians and women in three countries with high VBAC rates (Finland, Sweden and the Netherlands) and three countries with low VBAC rates (Ireland, Italy and Germany) are part of 'OptiBIRTH', an ongoing research project. The study reported here is based on interviews in high VBAC countries. The aim of the study was to investigate the views of clinicians working in countries with high VBAC rates on factors of importance for improving VBAC rates. METHODS: Individual (face-to-face or telephone) interviews and focus group interviews with clinicians (in different maternity care settings) in three countries with high VBAC rates were conducted during 2012-2013. In total, 44 clinicians participated: 26 midwives and 18 obstetricians. Five central questions about VBAC were used and interviews were analysed using content analysis. The analysis was performed in each country in the native language and then translated into English. All data were then analysed together and final categories were validated in each country. RESULTS: The findings are presented in four main categories with subcategories. First, a common approach is needed, including: feeling confident with VBAC, considering VBAC as the first alternative, communicating well, working in a team, working in accordance with a model and making agreements with the woman. Second, obstetricians need to make the final decision on the mode of delivery while involving women in counselling towards VBAC. Third, a woman who has a previous CS has a similar need for support as other labouring women, but with some extra precautions and additional recommendations for her care. Finally, clinicians should help strengthen women's trust in VBAC, including building their trust in giving birth vaginally, recognising that giving birth naturally is an empowering experience for women, alleviating fear and offering extra visits to discuss the previous CS, and joining with the woman in a dialogue while leaving the decision about the mode of birth open. CONCLUSIONS: This study shows that, according to midwives and obstetricians from countries with high VBAC rates, the important factors for improving the VBAC rate are related to the structure of the maternity care system in the country, to the cooperation between midwives and obstetricians, and to the care offered during pregnancy and birth. More research on clinicians' perspectives is needed from countries with low, as well as high, VBAC rates.

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.

Factors influencing maternal distress among Dutch women with a healthy pregnancy.

BACKGROUND: Maternal distress is a public health concern. Assessment of emotional wellbeing is not integrated in Dutch antenatal care. Midwives need to understand the influencing factors in order to identify women who are more vulnerable to experience maternal distress. OBJECTIVE: To examine levels of maternal distress during pregnancy and to determine the relationship between maternal distress and aetiological factors. METHODS: A cross-sectional study including 458 Dutch-speaking women with uncomplicated pregnancies during all trimesters of pregnancy. Data were collected with questionnaires between 10 September and 6 November 2012. Demographic characteristics and personal details were obtained. Maternal distress was measured with the Edinburgh Depression Scale (EDS), State-Trait Anxiety Inventory (STAI), and Pregnancy-Related Anxiety Questionnaire (PRAQ). Behaviour was measured with Coping Operations Preference Enquiry-Easy (COPE-Easy). Descriptive statistics and multiple linear regression analysis were used. RESULTS: Just over 20 percent of the women in our sample (21.8%) had a heightened score on one or more of the EDS, STAI or PRAQ. History of psychological problems (B=1.071; p=.001), having young children (B=2.998; p=.001), daily stressors (B=1.304; p=<.001), avoidant coping (B=1.047, p=<.001), somatisation (B=.484; p=.004), and negative feelings towards the forthcoming birth (B=.636; p=<.001) showed a significant positive relationship with maternal distress. Self-disclosure (B=-.863; p=.004) and acceptance of the situation (B=-.542; p=.008) showed a significant negative relationship with maternal distress. CONCLUSION: Maternal distress occurs among women with a healthy pregnancy and is significantly influenced by a variety of factors. Midwives need to recognise the factors that make women more vulnerable to develop and experience maternal distress in order to give adequate advice about how to best cope with this condition.

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.

Patterns of gestational weight gain in healthy, low-risk pregnant women without co-morbidities.

BACKGROUND: little is known of the impact of gestational weight gain (GWG) in relation to Body Mass Index (BMI) classification on perinatal outcomes in healthy pregnant women without co-morbidities. As a first step, the prevalence of obesity and the distribution of GWG in relation to the Institute of Medicine (IOM) 2009 guidelines for GWG were examined. METHODS: data from a prospective cohort study of - a priori - low risk, pregnant women from five midwife-led practices (n=1449) were analysed. Weight was measured at 12, 24 and 36 weeks. FINDINGS: at 12 weeks, 1.4% of the women were underweight, 53.8% had a normal weight, 29.6% were overweight, and 15.1% were obese according to the WHO classification of BMI. In our study population, 60% of the women did not meet the IOM recommendations: 33.4% had insufficient GWG and 26.7% gained too much weight. Although BMI was negatively correlated to total GWG (p<.001), overweight and obese women class I had a significant higher risk of exceeding the IOM guidelines. Normal weight women had a significantly higher risk of gaining less weight than recommended. Obese women classes II and III were at risk in both over- and undergaining. CONCLUSIONS: our data showed that the majority of women were unable to stay within recommended GWG ranges without additional interventions. The effects on pregnancy and health outcomes of falling out the IOM guidelines remain unclear for - a priori - low risk women. Since interventions to control GWG would have considerable impact on women and caregivers, harms and benefits should be well-considered before implementation.