Postoperative Respiratory Compromise following Cesarean Birth: The Impact of Obesity and Systemic Opioids

Objective The aim of this study was to measure the effect of obesity and systemic opioids on respiratory events within the first 24 hours following cesarean. Methods Opioid-naive women undergoing cesarean between January 2016 and December 2017 were included in this retrospective cohort study. The primary outcome was the proportion of women experiencing at least one composite respiratory outcome (oxygen saturation less than 95% lasting 30+ seconds or need for respiratory support) within 24 hours of cesarean. The impact of obesity and total systemic opioid dose in 24 hours (measured in morphine milligram equivalents [MMEs]) on the composite respiratory compromise outcome were evaluated. Results Of 2,230 cesarean births, 790 women had at least one composite respiratory event. Predictors of the composite respiratory outcome included body mass index (BMI) as a continuous variable (odds ratio = 1.063 for every one unit increase in BMI [95% confidence interval (CI): 1.021–1.108], p = 0.003), and MME (odds ratio = 1.005 [95% CI: 1.002–1.008], p = 0.003), adjusting for magnesium sulfate use. The interaction between obesity and opioid dose demonstrated an odds ratio of 1.000 (95% CI: 0.999–1.000, p = 0.030). Conclusion The proportion of women experiencing respiratory events following cesarean birth increases with the degree of obesity and opioid dose. Key Points

Evaluation of vaginal birth safety in twin pregnancies with the first twin in cephalic presentation

Objective: To evaluate vaginal birth safety by comparing the results of cesarean birth in twin pregnancies with the first twin in vertex presentation. Material and methods: A retrospective cohort study of vertex-presenting twin pregnancies between 32 weeks 0 days and 38 weeks 6 days of gestation was conducted at our hospital from January 2013 to December 2014. The study population was divided according to the mode of birth. The primary outcome was early neonatal mortality, and secondary outcomes related to maternal and perinatal clinical characteristics were analysed between the groups. Results: Of 45,166 births, 1.92% (n = 869) were twin pregnancies. Of the 295 pregnancies meeting the study criteria, 30.16% (n = 89) were in the vaginal birth group, while the remaining 69.84% (n = 206) were in the cesarean birth group. In the vaginal birth group, all the first twins were delivered via vaginal birth, while among the second twins, 82.03% (n = 73) were delivered via vaginal birth, and the remaining 17.97% (n = 16) were delivered via cesarean birth. In the vaginal birth group, the early neonatal mortality rate was 22.4‰ (n = 2), and it was 9.7‰ (n = 2) in the cesarean birth group. All of the deaths occurred in pregnancies under 37 weeks of gestation. Conclusion: The neonatal outcomes between the vaginal birth and cesarean birth groups were similar in term pregnancies with the first in twin vertex presentation, whereas adverse neonatal outcomes were increased in the vaginal birth group in preterm second twin pregnancies.

A mobile cesarean birth center as a solution to improve access to surgical birth in rural Ethiopia: a mixed methods research protocol

Background As an evidence-based intervention to prevent maternal and neonatal morbidity and mortality, cesarean birth at rates of under 2%, which is the case in rural Southwest Ethiopia, is an unacceptable public health problem and represents an important disparity in the use of this life-saving treatment compared to more developed regions. The objective of this study is to explore an innovative clinical solution (a mobile cesarean birth center) to low cesarean birth rates resulting from the Three Delays to emergency obstetric care in isolated and underserved regions of Ethiopia, and the world. Methods We will use mixed but primarily qualitative methods to explore and prepare the mobile cesarean birth center for subsequent implementation in communities in Bench Sheko and West Omo Zones. This will involve interviews and focus groups with key stakeholders and retreat settings for user-centered design activities. We will present stakeholders with a prototype surgical truck that will help them conceive of the cesarean birth center concept and discuss implementation issues related to staffing, supplies, referral patterns, pre- and post-operative care, and relationship to locations for vaginal birth. Discussion Completion of our study aims will allow us to describe participants’ perceptions about barriers and facilitators to cesarean birth and their attitudes regarding the appropriateness, acceptability, and feasibility of a mobile cesarean birth center as a solution. It will also result in a specific, measurable, attainable, relevant, and timely (SMART) implementation blueprint(s), with implementation strategies defined, as well as recruitment plans identified. This will include the development of a logic model and process map, a timeline for implementation with strategies selected that will guide implementation, and additional adaptation/adjustment of the mobile center to ensure fit for the communities of interest. Trial registration There is no healthcare intervention on human participants occurring as part of this research, so the study has not been registered.