title: Umbilical cord blood gas assessment of twins.
abstract: Umbilical cord arterial and venous blood gas values were compared in 63 twin pairs, of which 57 pairs had birth weights of 1500 g or more each. Small differences between the first and second twins existed for PO2, PCO2, and pH. However, bicarbonate values did not differ significantly. These cord gas differences represent minor respiratory aberrations, as reflected by a tendency toward carbon dioxide retention by the second twin. Route of delivery, time interval between deliveries, and nonvertex presentations were not associated with significant deviations from these observed acid-base patterns.
authors.affiliation: Department of Obstetrics and Gynecology, Louisiana State University Medical Center, New Orleans.
authors.forename: H L
authors.initials: HL
authors.lastname: Brown
authors.forename: J M
authors.initials: JM
authors.lastname: Miller
authors.forename: D E
authors.initials: DE
authors.lastname: Neumann
authors.forename: D F
authors.initials: DF
authors.lastname: Sarpong
authors.forename: H A
authors.initials: HA
authors.lastname: Gabert
mesh_terms: D001034:Apgar Score; D001639:Bicarbonates / Q000097:blood; D002245:Carbon Dioxide / Q000097:blood*; D002585:Cesarean Section; D005260:Female; D005312:Fetal Blood / Q000032:analysis*; D006801:Humans; D007231:Infant, Newborn; D007746:Labor Presentation; D010100:Oxygen / Q000097:blood*; D011247:Pregnancy; D011272:Pregnancy, Multiple; D014427:Twins
chemical_list: D001639:Bicarbonates; D002245:Carbon Dioxide; D010100:Oxygen