J Med Assoc Thai 1997; 80 (2):96

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Feto-Maternal Transfusion in Normal Pregnancy and During Delivery
Choavaratana R Mail, Uerareewong S , Makanantakosol S

Feto-maternal transfusion was studied in 2,000 pregnant Thai women. The technic used
in the study was modified acid election test. The population were divided into five group, first
trimester, second trimester, third trimester, during delivery and non pregnant women. Over all fetomaternal
transfusion occurred in 1,055 women (65.94% ). In first trimester, second trimester,
third trimester and during delivery were 53.5 per cent, 63.0 per cent, 71.1 per cent and 75.7 per
cent respectively. The data were significantly different from non pregnant women (p < 0.0001 ).
The volume of transfusion was varied from 0 to 12.65 ml and greater in the advancing gestational
age. In first trimester, second trimester, third trimester and during delivery the volume of
transfusion were 0.07, 0.08, 0.13, 0.19 ml respectively.

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