title: Effect of birth order on incidence of periventricular-intraventricular hemorrhage in very low birth weight twins.
abstract: The purpose of the study was to determine whether the incidence of periventricular-intraventricular hemorrhage (PV-IVH) is significantly different between the firstborn and secondborn of very low birth weight twins. The firstborn and secondborn of 102 sets of twins were compared by incidence of PV-IVH, mode of delivery, birth weight, 5-minute Apgar score, pH, duration of oxygen therapy, duration of ventilator support, and occurrence of patent ductus arteriosus, air leak, bronchopulmonary dysplasia, or hyaline membrane disease. PV-IVH was graded by the Papile classification. Statistical data were analyzed by either the paired t test or McNemar's test. Major PV-IVH (grades III and IV) occurred in 11 firstborn and 14 secondborn infants. Minor PV-IVH (grades I and II) occurred in 11 firstborn and 8 secondborn twins. Neither these findings nor those from other measured variables showed a statistically significant difference.
authors.affiliation: Department of Radiology, University of Mississippi Medical Center, Jackson 39216-4505, USA.
authors.forename: J Y
authors.initials: JY
authors.lastname: Gibson
authors.forename: G R
authors.initials: GR
authors.lastname: Graves
authors.forename: T W
authors.initials: TW
authors.lastname: Rawson
authors.forename: M H
authors.initials: MH
authors.lastname: LeBlanc
authors.forename: E F
authors.initials: EF
authors.lastname: Meydrech
mesh_terms: D001722:Birth Order; D002543:Cerebral Hemorrhage / Q000000981:diagnostic imaging / Q000209:etiology; D002552:Cerebral Ventricles / Q000000981:diagnostic imaging; D004200:Diseases in Twins; D006801:Humans; D015994:Incidence; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000000981:diagnostic imaging / Q000209:etiology; D019102:Infant, Very Low Birth Weight; D008499:Medical Records; D012189:Retrospective Studies; D012307:Risk Factors; D014463:Ultrasonography