Nomograms for rapid estimation of intravascular intrauterine exchange transfusion.

Christmas, J T; Little, B B; Johnston, W L; Santos-Ramos, R; Theriot, S K; Brown, C E · Obstet Gynecol · 1990

other · Level V

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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.

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