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  • Title: An initial miscarriage is associated with adverse pregnancy outcomes in the following pregnancy.
    Author: Weintraub AY, Sergienko R, Harlev A, Holcberg G, Mazor M, Wiznitzer A, Sheiner E.
    Journal: Am J Obstet Gynecol; 2011 Sep; 205(3):286.e1-5. PubMed ID: 22071067.
    Abstract:
    OBJECTIVE: The objective of the study was to determine whether 1 previous miscarriage is associated with an increased rate of adverse pregnancy outcomes in the following pregnancy. STUDY DESIGN: Second pregnancies of women with and without a miscarriage in their initial pregnancy were compared. Multivariable logistic regression models were constructed to control for confounders. RESULTS: Of 35,125 singleton deliveries in the second pregnancy, 5777 (16.4%) were of patients with an initial miscarriage. Multivariable analysis showed a significant association between a previous miscarriage and the following adverse pregnancy outcomes including premature rupture of membranes (odds ratio [OR], 2.22; 95% confidence interval [CI], 2.01-2.44), preterm delivery (OR, 1.34; 95% CI, 1.21-1.48), intrauterine growth restriction (OR, 1.24; 95% CI, 1.04-1.47), hypertensive disorders (OR 1.41; 95% CI 1.07-1.85), preeclampsia (OR, 1.63; 95% CI, 1.22-2.18), and cesarean delivery (OR, 1.59; 95% CI, 1.46-1.73). Perinatal mortality was significantly higher among women with an initial miscarriage (1.6% vs 1.0%; P < .001). CONCLUSION: An initial miscarriage is independently associated with adverse pregnancy outcomes.
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