Abstract
To examine recent incidence trends and characteristics of shoulder dystocia. This is a retrospective cohort study querying the Healthcare Cost and Utilization Project's National Inpatient Sample. The study population included 9913 838 vaginal deliveriesfornationalestimates from January 2016 to December 2019. The main outcome measure was the diagnosis of shoulderdystocia. A binary logistic regression model was used to identify characteristics of shoulderdystocia in multivariable analysis. Shoulderdystocia was reported in 228 120 deliveries (23.0 per 1000). The incidence of shoulderdystocia increased from 21.0 to 24.6 per 1000 deliveries during the 4-year study period (17.1% relative increase, P< 0.001). In a multivariable analysis, the recent year of delivery remained an independent factor for shoulder dystocia: adjusted odds ratio (aOR) compared with 2016, 1.09 (95% confidence interval [CI], 1.08-1.11), 1.13 (95% CI, 1.12-1.14), and 1.18 (95% CI, 1.16-1.19) for 2017, 2018, and 2019, respectively. Large for gestational age (aOR 4.33 [95% CI, 4.25-4.40]), diabetes mellitus (pregestational aOR, 4.78 [95% CI, 4.63-4.94], and gestational aOR, 1.69 [95% CI, 1.66-1.71]), and vacuum-assisted delivery (aOR, 2.18 [95% CI, 2.15-2.21]) exhibited the largest risks for shoulder dystocia. This national-level analysis identified various risk factors for shoulderdystocia and demonstrated that shouderdystociacases are increasing gradually in the United States.
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More From: International Journal of Gynecology & Obstetrics
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