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本文研究输入早产婴儿体内的成人红细胞的存活时间。19例极早产婴儿(出生时体重:878.7+/-221g,出生时孕龄:26.8+/-1.5星期)最后一次输血后,每星期采血样一次,检测其血循环中的胎儿Hb水平(％)。用反相HPLC从2μl血中分离出α、β、γ三种珠蛋白成分,胎儿Hb(HbF)百分率的计算公式为:γ/γ+β×100。输入的成人红细胞的成活时间定为;输血到受血婴儿血循环中HBF百分率回复到输血后HbF最高水平时的时间间隔,因为婴儿自身红细胞含HbF。19例婴儿中的
This article studies the survival of adult erythrocytes infused into preterm infants. Nineteen very premature babies (birth weight: 878.7 +/- 221 g, gestational age at birth: 26.8 +/- 1.5 weeks) After the last transfusion blood samples were taken once a week to determine fetal Hb levels (%) in the blood circulation . The contents of Hb (HbF) in fetus were calculated by reversed-phase HPLC from two μl of blood, and the formula for the percentage of fetal Hb (HbF) was: γ / γ + β × 100. Enter the survival time of adult red blood cells as; blood transfusion to the percentage of HBF in the blood circulation of the recipient infant to return to the highest level of HbF after transfusion time interval, because the baby’s own red blood cells containing HbF. Among 19 infants