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  • Title: The effect of mode of delivery on the risk of intraventricular hemorrhage in nondiscordant twin gestations under 1500 g.
    Author: Morales WJ, O'Brien WF, Knuppel RA, Gaylord S, Hayes P.
    Journal: Obstet Gynecol; 1989 Jan; 73(1):107-10. PubMed ID: 2909031.
    Abstract:
    The effect of birth order, presentation, and mode of delivery on neonatal outcome in nondiscordant twin gestations under 1500 g was investigated. All neonates had echoencephalograms performed by the fourth day of life to diagnose the presence and severity of intraventricular hemorrhage. One hundred fifty-six sets of twins were included in the study, of which 59 were in a vertex/vertex presentation, 59 in vertex/nonvertex presentation, and 38 with twin A in a nonvertex presentation. Second twins were characterized by a higher incidence of respiratory distress syndrome (RDS): 66 versus 54% (P less than .05), and severe grades of intraventricular hemorrhage: 30 versus 19% (P less than .01). For vertex/vertex twins, cesarean delivery did not result in improved outcome. Rather, the incidence of RDS was significantly increased in neonates from this group delivered by cesarean birth: 67 versus 46% (P less than .01). Among twins in which at least one of the fetuses was in a nonvertex presentation, those born via cesarean delivery demonstrated a lower incidence of both severe grades of intraventricular hemorrhage and mortality. However, after multivariate analysis to correct for differences in birth weight between the groups, no advantage for cesarean delivery could be demonstrated. Therefore, differences in birth weight, rather than in mode of delivery, accounted for the differences in the neonatal outcome of nonvertex-presenting twins.
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