title: Effect of birth order on intraventricular hemorrhage in very low birth weight twins.
abstract: We evaluated the effect of birth order on the incidence and severity of intraventricular hemorrhage in 29 sets of very low birth weight twins (1500 g or less). Intraventricular hemorrhage occurred in 55% of first-presenting twins and 62% of second-presenting twins. The incidence of minor intraventricular hemorrhage (grades I and II) was 41% for first twins and 52% for second twins, whereas the incidence of major intraventricular hemorrhage (grades III and IV) was 14 and 10%, respectively. None of these differences reached statistical significance. We conclude that birth order does not appear to have a major effect on the incidence or severity of intraventricular hemorrhage in very low birth weight twins.
authors.affiliation: Department of Pediatrics, Milton S. Hershey Medical Center, Pennsylvania State University College of Medicine, Hershey.
authors.forename: S A
authors.initials: SA
authors.lastname: Pearlman
authors.forename: D G
authors.initials: DG
authors.lastname: Batton
mesh_terms: D001722:Birth Order; D002543:Cerebral Hemorrhage / Q000209:etiology* / Q000503:physiopathology; D002552:Cerebral Ventricles; D002585:Cesarean Section; D036861:Delivery, Obstetric; D004200:Diseases in Twins; D005865:Gestational Age; D006801:Humans; D007230:Infant, Low Birth Weight; D007231:Infant, Newborn; D012189:Retrospective Studies