title: Discordant twins: acid-base status.
abstract: A prospective study was undertaken to determine the effect of twin birthweight discordancy on Apgar scores and umbilical blood acid-base parameters. Using the paired t-test, small but statistically significant differences were seen in these parameters favoring the heavier twin over its lighter sibling. These differences were also affected by birth order, with the first-born being favored.
authors.affiliation: Department of Obstetrics and Gynecology, New York University Medical Center, New York.
authors.forename: S A
authors.initials: SA
authors.lastname: Ordorica
authors.forename: F J
authors.initials: FJ
authors.lastname: Frieden
authors.forename: I A
authors.initials: IA
authors.lastname: Hoskins
authors.forename: B K
authors.initials: BK
authors.lastname: Young
mesh_terms: D000136:Acid-Base Equilibrium; D001034:Apgar Score; D001722:Birth Order; D001724:Birth Weight; D005260:Female; D005312:Fetal Blood / Q000378:metabolism; D005740:Gases / Q000097:blood; D006801:Humans; D007231:Infant, Newborn; D010920:Placenta / Q000098:blood supply / Q000502:physiology; D011247:Pregnancy; D011446:Prospective Studies; D014427:Twins / Q000706:statistics & numerical data
chemical_list: D005740:Gases