Michael C. Klein

Relationship of episiotomy to perineal trauma and morbidity, sexual dysfunction, and pelvic floor relaxation

OBJECTIVE Our purpose was to compare consequences for women of receiving versus not receiving median episiotomy early and 3 months post partum on the outcomes perineal pain, urinary and pelvic floor functioning by electromyography, and sexual functioning and to analyze the relationship between episiotomy and third- and fourth-degree tears. STUDY DESIGN A secondary cohort analysis was performed of participants within a randomized clinical trial, analyzed by type of perineal trauma and pain, pelvic floor, and sexual consequences of such trauma, while controlling for trial arm. The study was conducted in three university or community hospitals; 356 primiparous and 341 multiparous women were studied. RESULTS Early and 3-month-postpartum perineal pain was least for women who gave birth with an intact perineum. Spontaneous perineal tears were less painful than episiotomy. Sexual functioning was best for women with an intact perineum or perineal tears. Postpartum urinary and pelvic floor symptoms were similar in all perineal groups. At 3 months post partum those delivered with an intact perineum had the strongest pelvic floor musculature, those with episiotomy the weakest. Among primiparous women third- and fourth-degree tears were associated with median episiotomy (46/47). After forceps births were removed and 21 other variables potentially associated within such tears were controlled for, episiotomy was strongly associated with third- and fourth-degree tears (odds ratio +22.08, 95% confidence interval 2.84 to 171.53). Physicians using episiotomy at high rates also used other procedures, including cesarean section, more frequently. CONCLUSION Perineal and pelvic floor morbidity was greatest among women receiving median episiotomy versus those remaining intact or sustaining spontaneous perineal tears. Median episiotomy was causally related to third- and fourth-degree tears. Those using episiotomy at the highest rates were more likely use other interventions as well. Episiotomy use should be restricted to specified fetal-maternal indications.

Outcomes of planned home birth with registered midwife versus planned hospital birth with midwife or physician

Background: Studies of planned home births attended by registered midwives have been limited by incomplete data, nonrepresentative sampling, inadequate statistical power and the inability to exclude unplanned home births. We compared the outcomes of planned home births attended by midwives with those of planned hospital births attended by midwives or physicians. Methods: We included all planned home births attended by registered midwives from Jan. 1, 2000, to Dec. 31, 2004, in British Columbia, Canada (n = 2889), and all planned hospital births meeting the eligibility requirements for home birth that were attended by the same cohort of midwives (n = 4752). We also included a matched sample of physician-attended planned hospital births (n = 5331). The primary outcome measure was perinatal mortality; secondary outcomes were obstetric interventions and adverse maternal and neonatal outcomes. Results: The rate of perinatal death per 1000 births was 0.35 (95% confidence interval [CI] 0.00–1.03) in the group of planned home births; the rate in the group of planned hospital births was 0.57 (95% CI 0.00–1.43) among women attended by a midwife and 0.64 (95% CI 0.00–1.56) among those attended by a physician. Women in the planned home-birth group were significantly less likely than those who planned a midwife-attended hospital birth to have obstetric interventions (e.g., electronic fetal monitoring, relative risk [RR] 0.32, 95% CI 0.29–0.36; assisted vaginal delivery, RR 0.41, 95% 0.33–0.52) or adverse maternal outcomes (e.g., third- or fourth-degree perineal tear, RR 0.41, 95% CI 0.28–0.59; postpartum hemorrhage, RR 0.62, 95% CI 0.49–0.77). The findings were similar in the comparison with physician-assisted hospital births. Newborns in the home-birth group were less likely than those in the midwife-attended hospital-birth group to require resuscitation at birth (RR 0.23, 95% CI 0.14–0.37) or oxygen therapy beyond 24 hours (RR 0.37, 95% CI 0.24–0.59). The findings were similar in the comparison with newborns in the physician-assisted hospital births; in addition, newborns in the home-birth group were less likely to have meconium aspiration (RR 0.45, 95% CI 0.21–0.93) and more likely to be admitted to hospital or readmitted if born in hospital (RR 1.39, 95% CI 1.09–1.85). Interpretation: Planned home birth attended by a registered midwife was associated with very low and comparable rates of perinatal death and reduced rates of obstetric interventions and other adverse perinatal outcomes compared with planned hospital birth attended by a midwife or physician.

Determinants of vaginal-perineal integrity and pelvic floor functioning in childbirth

OBJECTIVES Our purpose was to evaluate risk factors for severe vaginal-perineal trauma and to ascertain determinants of pelvic floor strength. STUDY DESIGN Secondary analysis of 459 nulliparous women enrolled in a randomized controlled trial of episiotomy was carried out. In a multivariate analysis we examined the association between (1) sulcus tears, (2) third- or fourth-degree tears, and (3) pelvic floor strength and selected demographic, physiologic, pregnancy-related, and intrapartum factors. RESULTS Unemployment and shorter second stage of labor were significant predictors of sulcus tears. Episiotomy, forceps use, and birth weight were important predictors of third- and fourth-degree tears. Whereas perineal intactness (use of episiotomy and spontaneous tears) was not influenced by exercise, a strong exercise profile was associated with fewer third- and fourth-degree tears in the presence of episiotomy. Exercise did not influence the rate of sulcus tears. A total of 35% of the variability in postpartum pelvic floor strength was explained by antepartum strength; however, we were only able to identify 5% of the factors contributing to antepartum pelvic floor strength. CONCLUSIONS Determinants of sulcus tears appear to be present before pregnancy; third- and fourth-degree tears are related to physician management. Exercise mitigates the potential for severe trauma induced by episiotomy.

Attitudes of the New Generation of Canadian Obstetricians: How Do They Differ from Their Predecessors?

BACKGROUND Attitudes drive practice, perhaps more than evidence. The objective of this study was to determine if the new generation of Canadian obstetricians has attitudes differing from those of their predecessors. METHODS   Employing a cross-sectional, Internet, and paper-based survey, we conducted an in-depth study of obstetricians responding to the Canadian National Maternity Care Attitudes Survey. RESULTS Of the 800 Canadian obstetricians providing intrapartum care, 549 (68.6%) responded. Participants were stratified by age less than or equal to 40 years compared with those over 40 years; 81 percent of those 40 years or younger were women versus 40 percent over 40 years of age. Younger obstetricians were significantly more likely to favor use of routine epidural analgesia and believed that it did not interfere with labor or lead to instrumentation; were more concerned and feared the perineal and pelvic floor consequences of vaginal birth compared with cesarean section; and were significantly less supportive of vaginal birth after prior cesarean section, home birth, birth plans, routine episiotomy, and routine electronic fetal monitoring as providing maternal or fetal benefits. They were less positive than the older generation about a range of approaches to reducing the cesarean section rate, the importance of maternal choice and role in their own birth, and peer review, and they were more likely to believe that women having a cesarean section were not missing an important experience. No significant generational differences were found for ambivalent attitudes to vaginal breech birth. CONCLUSIONS Younger obstetricians were more evidence-based for some issues and less for others. In general younger obstetricians were more supportive of the role of birth technology in normal birth, including routine epidural analgesia, and they were less appreciative of the role of women in their own birth. They saw cesarean section as a solution to many perceived labor and birth problems. Results suggest a need to examine how obstetricians acquire their favorable attitudes to birth technology in normal birth.

Early labor assessment and support at home versus telephone triage: a randomized controlled trial.

OBJECTIVE: To compare rates of cesarean delivery among women who were triaged by obstetric nurses, either by telephone or by means of home visits. METHODS: Healthy, nulliparous women in labor at term with uncomplicated pregnancies residing in the City of Vancouver, British Columbia, and suburbs between November 2001 and October 2004 were randomized when they sought advice about when to come to hospital. Women randomized to telephone triage (n=731) were provided with advice by telephone. Women randomized to a home visit (n=728) were triaged after a “hands-on” assessment in their homes. RESULTS: The relative risk (RR) for cesarean delivery among home-triaged women compared with those receiving only telephone support was 1.12 (95% confidence interval [CI] 0.94–1.32). The study was designed to have 80% power to detect a RR less than 0.78 or greater than 1.27 for cesarean delivery. Significantly fewer women in the home visit group were admitted to hospital with cervical dilatation at 3 cm or less (RR 0.85, 95% CI 0.76–0.94). Significantly more women in the home visit group managed their labor without a visit to hospital for assessment (RR 1.54, 95% CI 1.23–1.92). There were no statistically significant differences in use of narcotic analgesia, epidural analgesia, and augmentation of labor. Adverse neonatal outcomes were rare and did not differ between study groups. CONCLUSION: Early labor assessment and support at home versus support by telephone reduces the number of visits to hospital in latent phase labor but does not impact cesarean delivery rates among healthy nulliparous women. CLINICAL TRIAL REGISTRATION: ISRCTN, www.controlled-trials.com/isrctn, MCT-44153 LEVEL OF EVIDENCE: I

Canadian Care Providers’ and Pregnant Women’s Approaches to Managing Birth Minimizing Risk While Maximizing Integrity

We employed grounded theory to explain how Canadian pregnant women and care providers manage birth. The sample comprised 9 pregnant women and 56 intrapartum care providers (family doctors, midwives, nurses, obstetricians, and doulas [individuals providing labor support]). We collected data from 2008 to 2009, using focus groups that included care providers and pregnant women. Using concurrent data collection and analysis, we generated the core category: minimizing risk while maximizing integrity. Women and providers used strategies to minimize risk and maximize integrity, which included accepting or resisting recommendations for surveillance and recommendations for interventions, and plotting courses vs. letting events unfold. Strategies were influenced by evidence, relationships, and local health cultures, and led to feelings of weakness or strength, confidence or uncertainty, and differing power- and responsibility-sharing arrangements. The findings highlight difficulties resisting surveillance and interventions in a risk-adverse culture, and the need for attention to processes of giving birth.

Postpartum Maternal and Newborn Discharge

OBJECTIVE To summarize the evidence available with regard to discharge planning for mothers and newborns. OUTCOME Assessment of maternal and neonatal morbidity and mortality as it relates to length of hospital stay. EVIDENCE A Medline database search of articles from January 1995 to December 2004, using the key words early postpartum discharge. RECOMMENDATIONS 1. Early discharge from hospital postnatally increases the risk of neonatal mortality and morbidity. Follow-up programs should take account of this. (II-2B) 2. The physical, psychological, and social wellbeing of the mother and newborn must be assessed when discharge planning takes place. Primiparous, young, single women are most likely to return to emergency departments with their neonates. (II-2A) 3. Programs in place for postpartum care in the community are well used and appreciated. Additional programs in the community may decrease neonatal mortality, morbidity, and readmissions. (II-2).

The Canadian Birth Place Study: Describing maternity practice and providers' exposure to home birth

OBJECTIVES (1) to describe educational, practice, and personal experiences related to home birth practice among Canadian obstetricians, family physicians, and registered midwives; (2) to identify barriers to provision of planned home birth services, and (3) to examine inter-professional differences in attitudes towards planned home birth. DESIGN the first phase of a mixed-methods study, a quantitative survey, comprised of 38 items eliciting demographic, education and practice data, and 48 items about attitudes towards planned home birth, was distributed electronically to all registered midwives (N=759) and obstetricians who provide maternity care (N=800), and a random sample of family physicians (n=3,000). SETTING Canada. This national investigation was funded by the Canadian Institutes for Health Research. PARTICIPANTS Canadian registered midwives (n=451), obstetricians (n=245), and family physicians (n=139). FINDINGS almost all registered midwives had extensive educational and practice experiences with planned home birth, and most obstetricians and family physicians had minimal exposure. Attitudes among midwives and physicians towards home birth safety and advisability were significantly different. Physicians believed that home births are less safe than hospital births, while midwives did not agree. Both groups believed that their views were evidence-based. Midwives were the most comfortable with including planned home birth as an option when discussing choice of birth place with pregnant women. Both midwives and physicians expressed discomfort with inter-professional consultation related to planned home births. In addition, both family physicians and obstetricians reported discomfort with discussing home birth with their patients. A significant proportion of family physicians and obstetricians would have liked to attend a home birth as part of their education. CONCLUSIONS the amount and type of education and exposure to planned home birth practice among maternity care providers were associated with attitudes towards home birth, comfort with discussing birth place options with women, and beliefs about safety. Barriers to home birth practice across professions were both logistical and philosophical. IMPLICATIONS FOR PRACTICE formal mechanisms for midwifery and medical education programs to increase exposure to the theory and practice of planned home birth may facilitate evidence based informed choice of birth place, and increase comfort with integration of care across birth settings. An increased focus among learners and clinicians on reliable methods for assessing the quality of the evidence about birth place and maternal-newborn outcomes may be beneficial.

The Canadian birth place study: examining maternity care provider attitudes and interprofessional conflict around planned home birth.

BackgroundAvailable birth settings have diversified in Canada since the integration of regulated midwifery. Midwives are required to offer eligible women choice of birth place; and 25-30% of midwifery clients plan home births. Canadian provincial health ministries have instituted reimbursement schema and regulatory guidelines to ensure access to midwives in all settings. Evidence from well-designed Canadian cohort studies demonstrate the safety and efficacy of midwife-attended home birth. However, national rates of planned home birth remain low, and many maternity providers do not support choice of birth place.MethodsIn this national, mixed-methods study, our team administered a cross-sectional survey, and developed a 17 item Provider Attitudes to Planned Home Birth Scale (PAPHB-m) to assess attitudes towards home birth among maternity providers. We entered care provider type into a linear regression model, with the PAPHB-m score as the outcome variable. Using Students’ t tests and ANOVA for categorical variables and correlational analysis (Pearson’s r) for continuous variables, we conducted provider-specific bivariate analyses of all socio-demographic, education, and practice variables (n=90) that were in both the midwife and physician surveys.ResultsMedian favourability scores on the PAPHB–m scale were very low among obstetricians (33.0), moderately low for family physicians (38.0) and very high for midwives (80.0), and 84% of the variance in attitudes could be accounted for by care provider type. Amount of exposure to planned home birth during midwifery or medical education and practice was significantly associated with favourability scores. Concerns about perinatal loss and lawsuits, discomfort with inter-professional consultations, and preference for the familiarity of the hospital correlated with less favourable attitudes to home birth. Among all providers, favourability scores were linked to beliefs about the evidence on safety of home birth, and confidence in their own ability to manage obstetric emergencies at a home birth.ConclusionsIncreasing the knowledge base among all maternity providers about planned home birth may increase favourability. Key learning competencies include criteria for birth site selection, management of obstetric emergencies at planned home births, critical appraisal of literature on safety of home birth, and inter-professional communication and collaboration when women are transferred from home to hospital.

Development and evaluation of a Chinese-language newborn feeding hotline: A prospective cohort study

BackgroundPreference for formula versus breast feeding among women of Chinese descent remains a concern in North America. The goal of this study was to develop an intervention targeting Chinese immigrant mothers to increase their rates of exclusive breastfeeding.MethodsWe convened a focus group of immigrant women of Chinese descent in Vancouver, British Columbia to explore preferences for method of infant feeding. We subsequently surveyed 250 women of Chinese descent to validate focus group findings. Using a participatory approach, our focus group participants reviewed survey findings and developed a priority list for attributes of a community-based intervention to support exclusive breastfeeding in the Chinese community. The authors and focus group participants worked as a team to plan, implement and evaluate a Chinese language newborn feeding information telephone service staffed by registered nurses fluent in Chinese languages.ResultsParticipants in the focus group reported a strong preference for formula feeding. Telephone survey results revealed that while pregnant Chinese women understood the benefits of breastfeeding, only 20.8% planned to breastfeed exclusively. Only 15.6% were breastfeeding exclusively at two months postpartum. After implementation of the feeding hotline, 20% of new Chinese mothers in Vancouver indicated that they had used the hotline. Among these women, the rate of exclusive breastfeeding was 44.1%; OR 3.02, (95% CI 1.78–5.09) compared to women in our survey.ConclusionInitiation of a language-specific newborn feeding telephone hotline reached a previously underserved population and may have contributed to improved rates of exclusive breastfeeding.