This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
Partial exchange transfusion for polycythemia of the newborn
Exchange volume = blood volume × (hematocrit − target hematocrit) ÷ hematocrit, target usually 55 % (Cochrane 2010); blood volume from the Blood volume calculator
Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.
Frequently asked questions
Partial exchange transfusion for polycythemia of the newborn: What does this calculator compute?
Calculates, in polycythemia of the newborn (too many red blood cells, venous hematocrit above 65 %), the volume for a partial exchange transfusion using the formula of the Cochrane review 2010: blood volume × (measured − target hematocrit) ÷ measured hematocrit, target usually 55 %. The blood volume comes from the calculator “Blood volume by age” (term newborns 80–90 ml/kg, preterm infants 90–100 ml/kg) or from a custom value. With reservations: the calculator says nothing about the indication; the review found no long-term benefit.
Partial exchange transfusion for polycythemia of the newborn: Which sources is this calculator based on?
Ozek E, Soll R, Schimmelpfennig E: Partial exchange transfusion to prevent neurodevelopmental disability in infants with polycythemia (Cochrane Database Syst Rev 2010;(1):CD005089) (2010); Riley AA, Arakawa Y, Worley S, Duncan BW, Fukamachi K: Circulating blood volumes: a review of measurement techniques and a meta-analysis in children (ASAIO J 56:260–264) (2010); OpenAnesthesia (IARS): Maximum Allowable Blood Loss – Table 1: Blood Volume by Age (2024)