title: Nomograms for rapid estimation of intravascular intrauterine exchange transfusion.
abstract: Fetal exchange transfusion is complicated by the fact that vascular access must be maintained while the number of exchanges needed to achieve a desired post-transfusion hematocrit is calculated. A rapid method for estimating the number of exchange transfusions would greatly simplify fetal exchange transfusion for blood group isoimmunization. In this report, we present a graphic method for determining the number of exchange transfusions necessary to achieve a post-transfusion hematocrit of 45%, using a nomogram for 5- and 10-mL exchange transfusion volumes.
authors.affiliation: Department of Obstetrics and Gynecology, University of Texas Southwestern Medical Center, Dallas.
authors.forename: J T
authors.initials: JT
authors.lastname: Christmas
authors.forename: B B
authors.initials: BB
authors.lastname: Little
authors.forename: W L
authors.initials: WL
authors.lastname: Johnston
authors.forename: R
authors.initials: R
authors.lastname: Santos-Ramos
authors.forename: S K
authors.initials: SK
authors.lastname: Theriot
authors.forename: C E
authors.initials: CE
authors.lastname: Brown
mesh_terms: D001805:Blood Transfusion, Intrauterine / Q000379:methods*; D005078:Exchange Transfusion, Whole Blood / Q000379:methods*; D005260:Female; D005312:Fetal Blood / Q000032:analysis; D006400:Hematocrit; D006801:Humans; D008433:Mathematics; D011247:Pregnancy