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Automated Exchange Transfusion and Exchange Rate
Author(s) -
Funato Masahisa,
Shirnada Seiichi,
Tarnai Hiroshi,
Taki Hideo,
Yoshioka Yasushi
Publication year - 1989
Publication title -
pediatrics international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.49
H-Index - 63
eISSN - 1442-200X
pISSN - 1328-8067
DOI - 10.1111/j.1442-200x.1989.tb01357.x
Subject(s) - medicine , diamond , exchange transfusion , automated method , andrology , metallurgy , materials science , artificial intelligence , computer science
An automated blood exchange transfusion (BET) with a two‐site technique has been devised by Goldmann et al and by us, using an infusion pump. With this method, we successfully performed exchange transfusions 189 times in the past four years on 110 infants with birth weights ranging from 530 g to 4,000 g. The exchange rate by the automated method was compared with the rate by Diamond's method. Serum bilirubin (SB) levels before and after BET and the maximal SB rebound within 24 hours after BET were: 21.6 ± 2.4, 11.5 ± 2.2, and 15.0 ± 1.5 mg/dl in the automated method, and 22.0 ± 2.9, 11.2 ± 2.5, and 17.7 ± 3.2 mg/dl in Diamond's method, respectively. The result showed that the maximal rebound of the SB level within 24 hours after BET was significantly lower in the automated method than in Diamond's method (p<0.01), though SB levels before and after BET were not significantly different between the two methods. The exchange rate was also measured by means of staining the fetal red cells (F cells) both in the automated method and in Diamond's method, and comparing them. The exchange rate of F cells in Diamond's method went down along the theoretical exchange curve proposed by Diamond, while the rate in the automated method was significantly better than in Diamond's, especially in the early stage of BET (p<0.01). We believe that the use of this automated method may give better results than Diamond's method in the rate of exchange, because this method is performed with a two‐site technique using a peripheral artery and vein.