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Introduction: Pregnant women with a body mass index (BMI) ≥40 kg/m2 are at an increased risk of requiring planned‐ and unplanned cesarean deliveries (CD). The aim of this systematic review is to compare outcomes in women with BMI ≥ 40 kg/m2 based on planned and actual mode of birth. Material and Methods: Five databases were searched for English and French‐language publications until February 2019, and all studies reporting on delivery outcomes in women with BMI ≥ 40 kg/m2, stratified by planned and actual mode of birth, were included. Risk‐of‐bias was assessed using the Newcastle‐Ottawa Scale. Relative risks (RR) and 95% confidence intervals were calculated using random‐effects meta‐analysis. Results: Ten observational studies were included. Anticipated vaginal birth vs planned CD (5 studies, n = 2216) was associated with higher risk for postpartum hemorrhage (13.0% vs 4.1%, P <.001, numbers needed to harm (NNH = 11), I2 = 0%) but lower risk for wound complications (7.6% vs 14.5%, P <.001, numbers needed to treat (NNT = 15), I2 = 58.3%). Planned trial of labor vs repeat CD (3 studies, n = 4144) was associated with higher risk for uterine dehiscence (0.94% vs 0.42%, P =.04, NNH = 200, I2 = 0%), endometritis (5.1% vs 2.2%, P <.001, NNH = 35, I2 = 0%), prolonged hospitalization (one study, 30.3% vs 26.0%, P =.003, NNH = 23), low five‐minute Apgar scores (4.9% vs 1.7%, RR 2.95 (2.03, 4.28), NNH = 30, I2 = 0%) and birth trauma (1.1% vs 0.2%, P <.001, NNH = 111, I2 = 0%). Successful vaginal birth vs intrapartum CD (n = 3625) was associated with lower risk of postpartum hemorrhage (15.1% vs 70%, P <.001, NNT = 2, I2 = 0%), wound complications (one study, 0% vs 4.4%, P =.007, NNT = 23), prolonged hospitalization (one study, 1.9% vs 6.7%, 0.04, NNT = 21) and low five‐minute Apgar scores (one study, 1.0% vs 5.6%, P =.03, NNT = 22), but more birth trauma (5.9% vs 0.6%, P =.005, NNH = 19, I2 = 0%). Compared groups had dissimilar demographic characteristics. Although studies scored 6‐7/9 on risk‐of‐bias assessment, they were at high‐risk for confounding by indication. Conclusions: Evidence from observational studies suggests clinical equipoise regarding the optimal mode of delivery in women with BMI ≥ 40 kg/m2 and no prior CD. This question is best answered by a randomized trial. Based on an unplanned subgroup analysis, for women with BMI ≥ 40 kg/m2 and prior CD, repeat CD may be associated with better clinical outcomes. [ABSTRACT FROM AUTHOR]

Objective: To determine whether preterm birth in a twin pregnancy increases the risk of subsequent preterm birth (PTB) in a singleton pregnancy and to identify predictors for singleton PTB in women with previous twin PTB.Method: A retrospective cohort study of women with prior twin birth followed by a singleton birth in two tertiary referral centres between 2000 and 2016 was conducted. Rate of PTB in subsequent singleton pregnancy was compared between women who experienced previous preterm versus term twin birth. Analysis was further stratified by gestational age at twin and singleton birth, etiology for PTB and chorionicity in the twin pregnancy.Results: A total of 378 women met the inclusion criteria, of whom 252 (66.7%) experienced PTB in the index twin pregnancy. The overall rate of PTB in the subsequent singleton pregnancy was 11.6% (44/378). Women with prior twin PTB had a higher rate of PTB in the subsequent singleton pregnancy compared with women with prior term twin birth (17.5 versus 6.3%, p = .003, or 3.12, 95%-CI 1.42-6.85), mainly due to a higher rate of late singleton preterm birth (13.1 versus 4.0%, p = .005). Findings of higher odds of PTB in the subsequent singleton pregnancy was limited to women who gave birth before 340/7 weeks in the twin pregnancy and was related to the degree of prematurity (prior twin PTB at 300/7-336/7 weeks: OR 3.09, 95%-CI 1.12-8.51; prior twin PTB at <300/7 weeks: OR 5.8, 95%-CI 2.46-13.68). The association between previous twin PTB and subsequent singleton PTB was limited to women with prior spontaneous twin PTB (OR 3.34, 95%-CI 1.50-7.45).Conclusion: Women with a history of spontaneous PTB in a twin pregnancy are at increased odds of PTB in subsequent singleton pregnancies compared to women with prior term twin birth, and the risk is related to the severity of prematurity in the index twin pregnancy. [ABSTRACT FROM AUTHOR]

The article evaluates the Yale MeSH Analyzer.

Introduction: Pregnant women with a body mass index (BMI) ≥40 kg/m 2 are at an increased risk of requiring planned- and unplanned cesarean deliveries (CD). The aim of this systematic review is to compare outcomes in women with BMI ≥ 40 kg/m 2 based on planned and actual mode of birth., Material and Methods: Five databases were searched for English and French-language publications until February 2019, and all studies reporting on delivery outcomes in women with BMI ≥ 40 kg/m 2 , stratified by planned and actual mode of birth, were included. Risk-of-bias was assessed using the Newcastle-Ottawa Scale. Relative risks (RR) and 95% confidence intervals were calculated using random-effects meta-analysis., Results: Ten observational studies were included. Anticipated vaginal birth vs planned CD (5 studies, n = 2216) was associated with higher risk for postpartum hemorrhage (13.0% vs 4.1%, P < .001, numbers needed to harm (NNH = 11), I 2  = 0%) but lower risk for wound complications (7.6% vs 14.5%, P < .001, numbers needed to treat (NNT = 15), I 2  = 58.3%). Planned trial of labor vs repeat CD (3 studies, n = 4144) was associated with higher risk for uterine dehiscence (0.94% vs 0.42%, P = .04, NNH = 200, I 2  = 0%), endometritis (5.1% vs 2.2%, P < .001, NNH = 35, I 2  = 0%), prolonged hospitalization (one study, 30.3% vs 26.0%, P = .003, NNH = 23), low five-minute Apgar scores (4.9% vs 1.7%, RR 2.95 (2.03, 4.28), NNH = 30, I 2  = 0%) and birth trauma (1.1% vs 0.2%, P < .001, NNH = 111, I 2  = 0%). Successful vaginal birth vs intrapartum CD (n = 3625) was associated with lower risk of postpartum hemorrhage (15.1% vs 70%, P < .001, NNT = 2, I 2  = 0%), wound complications (one study, 0% vs 4.4%, P = .007, NNT = 23), prolonged hospitalization (one study, 1.9% vs 6.7%, 0.04, NNT = 21) and low five-minute Apgar scores (one study, 1.0% vs 5.6%, P = .03, NNT = 22), but more birth trauma (5.9% vs 0.6%, P = .005, NNH = 19, I 2  = 0%). Compared groups had dissimilar demographic characteristics. Although studies scored 6-7/9 on risk-of-bias assessment, they were at high-risk for confounding by indication., Conclusions: Evidence from observational studies suggests clinical equipoise regarding the optimal mode of delivery in women with BMI ≥ 40 kg/m 2 and no prior CD. This question is best answered by a randomized trial. Based on an unplanned subgroup analysis, for women with BMI ≥ 40 kg/m 2 and prior CD, repeat CD may be associated with better clinical outcomes., (© 2020 Nordic Federation of Societies of Obstetrics and Gynecology.)

Objective: To systematically review the literature for studies comparing the efficacy of opioid analgesics for older adults (≥ 65 years) presenting to the emergency department (ED) with acute pain., Data Sources: The Cochrane Library, MEDLINE, EMBASE, Web of Science, and CINAHL were searched up to August or September 2017. Reference lists were searched for potential articles and ClinicalTrials.gov was searched for unpublished trials., Study Selection: Randomized controlled trials (RCTs) were sought that compared the efficacy of 2 or more opioid analgesics for acute pain in older patients (≥ 65 years) in the ED. Two reviewers independently screened abstracts, assessed study quality, and extracted data., Synthesis: After screening titles and abstracts of 1315 citations, the full texts of 63 studies were reviewed and 1 RCT met the inclusion criteria. This study randomized older adult patients presenting to an urban academic ED with acute, severe pain to receive a single dose of either 0.0075 mg/kg intravenous hydromorphone or 0.05 mg/kg intravenous morphine. This study found no clinical or statistical difference between the 2 treatments., Conclusion: The lack of published research in this area demonstrates a considerable gap in knowledge of the comparative efficacy of opioid analgesics in the growing older adult patient population. Physicians are often uncertain in their choice of analgesia, potentially contributing to the undertreatment of pain. It is clear that well designed RCTs are urgently needed., (Copyright© the College of Family Physicians of Canada.)