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Risk of preterm delivery in non-diabetic women with polycystic ovarian syndrome

OBJECTIVE: To examine the risk and etiology of preterm delivery in women with polycystic ovary syndrome (PCOS). STUDY DESIGN: Retrospective cohort study comparing preterm delivery rate among non-diabetic PCOS and non-PCOS women with singleton pregnancy. Multivariable logistic regression was used to identify predictors of preterm delivery among PCOS women. RESULT: Among 908 PCOS women with singleton pregnancy, 12.9% delivered preterm compared with 7.4% among non-PCOS women (P<0.01). Causes of preterm delivery among PCOS women included preterm labor (41%), cervical insufficiency (11%), hypertensive complications (20%), preterm premature rupture of membranes (15%), fetal-placental concerns (9%) and intrauterine fetal demise (5%). Maternal age, race/ethnicity and nulliparity were significant predictors of preterm delivery in PCOS, whereas body mass index and fertility medications were not. CONCLUSION: A higher proportion of PCOS women delivered preterm (12.9%) compared with non-PCOS women, with the majority of cases due to spontaneous preterm birth. Future studies should explore etiologies and strategies to improve pregnancy outcomes in PCOS.

Authors: Yamamoto M; Feigenbaum SL; Crites Y; Escobar GJ; Yang J; Ferrara A; Lo JC

J Perinatol. 2012 Oct;32(10):770-6. Epub 2012 Jan 19.

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