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• W3146148052 abstract "OBJECTIVE This study aimed to determine if maternal intrapartum administration of oxygen altered the rate of cesarean delivery compared with room air. DATA SOURCES This study was a systematic review and meta-analysis of randomized controlled trials. Searches were performed in MEDLINE, OVID, Scopus, ClinicalTrials.gov, and the Cochrane Central Register of Controlled Trials using a combination of key words related to “pregnant patients,” “labor,” “oxygen,” “fetus,” “newborn,” and pregnancy outcomes from database inception until April 2020. The study was registered in PROSPERO (registration number CRD42020162110). STUDY ELIGIBILITY CRITERIA The inclusion criteria were randomized controlled trials of maternal administration of oxygen compared with room air in labor. The exclusion criteria were quasi-randomized trials and oxygen administered for planned cesarean deliveries. The primary outcome was the rate of cesarean delivery. Secondary maternal and neonatal outcomes, including cord gas values, were analyzed. METHODS The Cochrane Handbook guidelines were used to assess bias in trials. To calculate the relative risk or mean differences with confidence intervals, a random-effects model was employed. Subgroup analyses were performed for women who received oxygen for nonreassuring fetal heart rate monitoring or prophylactically. RESULTS Five randomized controlled trials, including 768 women, were included in the meta-analysis, 3 using prophylactic oxygen and 2 using oxygen for nonreassuring fetal heart rate monitoring. The risk of bias was generally considered low. There was no statistically significant difference in the rate of cesarean delivery between patients administered oxygen and patients provided room air (16 of 365 [4.4%] vs 11 of 379 [2.9%]; risk ratio 1.5; 95% confidence interval, 0.7–3.3). In addition, there were no statistically significant differencs in the rates of cesarean delivery for nonreassuring fetal heart rate monitoring, operative vaginal deliveries, Apgar scores of <7, neonatal intensive care unit admissions, or cord blood gas values. There were no statistically significant difference when analyzing oxygen for nonreassuring fetal heart rate monitoring alone or prophylactic oxygen alone. Data regarding FHT is mixed, with one study suggesting an improvement and three suggesting no change. CONCLUSION Maternal intrapartum oxygen administration was not associated with any differences in the rate of cesarean delivery or any secondary outcomes compared with room air overall and in the subgroups of therapeutic (for nonreassuring fetal heart rate monitoring) or prophylactic administration in this meta-analysis. Large randomized controlled trials are necessary to further examine any possible benefits or harms of oxygen administration in labor, particularly for nonreassuring fetal heart rate monitoring. This study aimed to determine if maternal intrapartum administration of oxygen altered the rate of cesarean delivery compared with room air. This study was a systematic review and meta-analysis of randomized controlled trials. Searches were performed in MEDLINE, OVID, Scopus, ClinicalTrials.gov, and the Cochrane Central Register of Controlled Trials using a combination of key words related to “pregnant patients,” “labor,” “oxygen,” “fetus,” “newborn,” and pregnancy outcomes from database inception until April 2020. The study was registered in PROSPERO (registration number CRD42020162110). The inclusion criteria were randomized controlled trials of maternal administration of oxygen compared with room air in labor. The exclusion criteria were quasi-randomized trials and oxygen administered for planned cesarean deliveries. The primary outcome was the rate of cesarean delivery. Secondary maternal and neonatal outcomes, including cord gas values, were analyzed. The Cochrane Handbook guidelines were used to assess bias in trials. To calculate the relative risk or mean differences with confidence intervals, a random-effects model was employed. Subgroup analyses were performed for women who received oxygen for nonreassuring fetal heart rate monitoring or prophylactically. Five randomized controlled trials, including 768 women, were included in the meta-analysis, 3 using prophylactic oxygen and 2 using oxygen for nonreassuring fetal heart rate monitoring. The risk of bias was generally considered low. There was no statistically significant difference in the rate of cesarean delivery between patients administered oxygen and patients provided room air (16 of 365 [4.4%] vs 11 of 379 [2.9%]; risk ratio 1.5; 95% confidence interval, 0.7–3.3). In addition, there were no statistically significant differencs in the rates of cesarean delivery for nonreassuring fetal heart rate monitoring, operative vaginal deliveries, Apgar scores of <7, neonatal intensive care unit admissions, or cord blood gas values. There were no statistically significant difference when analyzing oxygen for nonreassuring fetal heart rate monitoring alone or prophylactic oxygen alone. Data regarding FHT is mixed, with one study suggesting an improvement and three suggesting no change. Maternal intrapartum oxygen administration was not associated with any differences in the rate of cesarean delivery or any secondary outcomes compared with room air overall and in the subgroups of therapeutic (for nonreassuring fetal heart rate monitoring) or prophylactic administration in this meta-analysis. Large randomized controlled trials are necessary to further examine any possible benefits or harms of oxygen administration in labor, particularly for nonreassuring fetal heart rate monitoring." @default.
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• W3146148052 title "Effect of intrapartum oxygen on the rate of cesarean delivery: a meta-analysis" @default.
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