Objective To explore the effect of delayed umbilical cord clamping on preterm infants with anemia .Methods The clinical data of 80 preterm infants were retrospectively analyzed .Forty preterm infants with delayed umbilical cord clamping ( whose umbilical cord was clamped at 60 seconds after birth ) were enrolled as experimental group , and forty infants with routine umbilical cord clamping ( whose umbilical cord was clamped at 15 seconds after birth ) were enrolled as control group .The levels of hemoglobin at 1 and 2 weeks after birth were observed in both groups .The incidence of anemia after 1 week of birth and blood transfusion during hospitalization were compared between two groups.Results In the first week,there was no significant difference in the hemoglobin level between two groups (P>0.05), but the incidence of anemia in the experimental group was lower than that in the control group (5.0%vs.32.5%,P<0.05).The hemoglobin level decreased significantly in the second week after birth in both groups(P<0.05),but the level in the control group was lower than that in the experimental group(P<0.05).The rate of blood transfusion in the experimental group was significantly lower than that in the control group (2.5%vs.25.0%,P<0.05).Conclusion Delaying umbilical cord clamping can decrease the incidence of anemia and the rate of blood transfusion in preterm infants .%目的：探讨出生延迟结扎脐带对早产儿贫血的影响。方法回顾性分析80例早产儿的病例临床资料，将延迟脐带结扎（娩出后60 s结扎脐带）的40例早产儿设为试验组，按照临床常规结扎脐带（娩出后15 s内结扎脐带）的40例早产儿设为对照组。观察两组早产儿生后1周及2周血红蛋白水平，对比两组早产儿生后1周贫血发生情况以及住院期间需要输血治疗的情况。结果生后1周，两组的血红蛋白比较，差异无统计学意义（ P ＞0．05），但试验组贫血发生率为5．0％，低于对照组的32．5％（P＜0．05）。两组早产儿生后2周血红蛋白均较前明显降低（P＜0．05），但对照组明显低于试验组（P＜0．05）。试验组的输血率为2．5％，低于对照组的25．0％（P＜0．05）。结论出生延迟结扎脐带可以降低早产儿贫血发生率以及输血概率。
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