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  • Title: The clinical significance of bleeding during the second trimester of pregnancy.
    Author: Koifman A, Levy A, Zaulan Y, Harlev A, Mazor M, Wiznitzer A, Sheiner E.
    Journal: Arch Gynecol Obstet; 2008 Jul; 278(1):47-51. PubMed ID: 18066562.
    Abstract:
    OBJECTIVE: This study aimed at investigating the clinical importance and pregnancy outcome in women suffering from bleeding during the second half of their pregnancies. METHODS: A population-based study including all deliveries between the years 1988 and 2005 was conducted. Comparison was performed between patients with and without vaginal bleeding during the second half of pregnancy. Pregnancies, which terminated before 22 weeks, multiple gestations and women lacking prenatal care were excluded from the analysis. Stratified analyses, using the Mantel-Haenszel technique, and a multiple logistic regression model were performed to control for confounders. RESULTS: During the study period, 175,093 singleton deliveries occurred in our institute. Of these, 2,010 (1.1%) were complicated with bleeding upon admission during the second half of pregnancy. The cases were mostly attributed to placental abruption (63.5%; n = 1,276) and placenta previa (36.5%; n = 734). Independent risk factors associated with bleeding, using a backward, stepwise multivariate analysis were oligohydramnios, polyhydramnions, [odds ratio (OR) = 1.6; 95% confidence interval (CI) 1.2-2.0; P = 001 and 1.5; 1.2-1.8; P < 0.01, respectively], suspected intra uterine growth restriction (IUGR, 3.2; 2.6-4.0; P < .001), gestational age, previous abortions and maternal age. These patients subsequently were more likely to deliver by cesarean section (CS, 72.9 vs. 12.1%, OR = 19.5; 95% CI 17.6-19.9; 14.9 vs. 1.1%; P < 0.001). Perinatal mortality among patients admitted due to second half bleeding was significantly higher as compared to patients without bleeding (P < .001). CONCLUSION: Bleeding upon admission during the second half of pregnancy is an independent risk factor for perinatal mortality. Careful surveillance, including fetal monitoring, is suggested in these cases in order to reduce the adverse perinatal outcome.
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