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Augmentation of labour with oxytocin and its association with delivery outcomes: a large-scale cohort study in 12 public hospitals in Nepal
Acta Obstetricia et Gynecologica Scandinavica ( IF 3.5 ) Pub Date : 2020-06-02 , DOI: 10.1111/aogs.13919
Helena Litorp 1, 2 , Avinash K Sunny 3 , Ashish Kc 1, 4
Affiliation  

INTRODUCTION The use of oxytocin to augment labour is increasing in many low-resource settings, however, little is known about the effects of such use in contexts where resources for intrapartum monitoring are scarce. In this study, we sought to assess the association between augmentation of labour with oxytocin and delivery outcomes. MATERIAL AND METHODS We conducted a cohort study in 12 public hospitals in Nepal, including all deliveries with and without augmentation of labour with oxytocin, but excluding elective cesarean sections, women with missing information on augmentation of labour, and women without fetal heart rate on admission. Bivariate and multivariate logistic regression calculating the crude and adjusted risk ratio (aRR) with corresponding 95% confidence intervals (CI) were performed, comparing 1) intrapartum stillbirth and first-day mortality (primary outcome), and 2) intrapartum monitoring, mode of delivery, post-partum hemorrhage, bag-and-mask ventilation of the newborn, Apgar score, and neonatal death before discharge (secondary outcomes) among women with and without oxytocin-augmented labour. RESULTS The total cohort consisted of 78 931 women of which 28 914 (37%) had labour augmented with oxytocin and 50 016 (63%) did not have labour augmented with oxytocin. Women with augmentation of labour had no increased risk of intrapartum stillbirth and first-day mortality (aRR 1.24, 95% CI 0.65-2.4), but a decreased risk of suboptimal partograph use (aRR 0.71, 95% CI 0.68-0.74), a decreased risk of suboptimal fetal heart rate monitoring (aRR 0.50, 95% CI 0.48-0.53), a decreased risk of emergency cesarean section (aRR 0.62, 95% CI 0.59-0.66), an increased risk of bag-and-mask ventilation (aRR 2.1, 95% CI 1.8-2.5), an increased risk of Apgar score < 7 at 5 minutes (aRR 1.65, 95% CI 1.49-1.86), and a an increased risk of neonatal death (aRR 1.93, 95% CI 1.46-2.56). CONCLUSIONS Although augmentation of labour with oxytocin might be associated with beneficial effects such as improved monitoring and a decreased risk of caesarean section, its use may lead to an increased risk of adverse perinatal outcomes. We urge for a cautious use of oxytocin to augment labour in low-resource contexts, and call for evidence-based guidelines on augmentation of labour in low-resource settings.

中文翻译:

催产素促进分娩及其与分娩结果的关系:尼泊尔 12 家公立医院的大规模队列研究

引言 在许多资源匮乏的环境中,使用催产素来增加分娩的人数正在增加,但是,在产时监测资源稀缺的情况下,人们对这种使用的影响知之甚少。在这项研究中,我们试图评估使用催产素增加分娩与分娩结果之间的关联。材料和方法 我们在尼泊尔 12 家公立医院进行了一项队列研究,包括所有使用催产素和未使用催产素助产的分娩,但不包括选择性剖宫产、缺少助产信息的妇女和入院时没有胎心率的妇女. 执行双变量和多变量逻辑回归计算粗略和调整后的风险比 (aRR) 以及相应的 95% 置信区间 (CI),比较 1) 产时死产和第一天死亡率(主要结果),和 2) 产时监测、分娩方式、产后出血、新生儿袋面罩通气、Apgar 评分和出院前新生儿死亡(次要结果)结果)在有和没有催产素增强分娩的妇女中。结果 整个队列由 78 931 名妇女组成,其中 28 914 名 (37%) 使用催产素增加分娩,50 016 名 (63%) 未使用催产素增加分娩。产程增加的妇女产时死胎和第一天死亡率的风险没有增加(aRR 1.24,95% CI 0.65-2.4),但使用次优产程仪的风险降低(aRR 0.71,95% CI 0.68-0.74),a降低胎心率监测不理想的风险(aRR 0.50,95% CI 0.48-0.53),降低紧急剖宫产的风险(aRR 0.62,95% CI 0.59-0.66),袋面罩通气风险增加(aRR 2.1,95% CI 1.8-2.5),5 分钟时 Apgar 评分 < 7 的风险增加(aRR 1.65,95% CI 1.49- 1.86),以及新生儿死亡风险增加(aRR 1.93,95% CI 1.46-2.56)。结论 尽管使用催产素增加产程可能与改善监测和降低剖腹产风险等有益效果相关,但它的使用可能会导致围产期不良结局的风险增加。我们敦促谨慎使用催产素来增加资源匮乏环境中的劳动力,并呼吁制定关于在资源匮乏环境中增加劳动力的循证指南。以及新生儿死亡风险增加(aRR 1.93,95% CI 1.46-2.56)。结论 尽管使用催产素增加产程可能与改善监测和降低剖腹产风险等有益效果相关,但它的使用可能会导致围产期不良结局的风险增加。我们敦促谨慎使用催产素来增加资源匮乏环境中的劳动力,并呼吁制定关于在资源匮乏环境中增加劳动力的循证指南。以及新生儿死亡风险增加(aRR 1.93,95% CI 1.46-2.56)。结论 尽管使用催产素增加产程可能与改善监测和降低剖腹产风险等有益效果相关,但它的使用可能会导致围产期不良结局的风险增加。我们敦促谨慎使用催产素来增加资源匮乏环境中的劳动力,并呼吁制定关于在资源匮乏环境中增加劳动力的循证指南。
更新日期:2020-06-02
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