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目的研究延迟断脐对早产儿的影响。方法对因患重度子痫前期疾病在孕28周至37周间剖宫分娩的早产儿采取延迟断脐的方法处理脐带,观察延迟断脐对早产儿的红细胞压积、血红蛋白浓度及出生后血气氧分压和二氧化碳分压的影响;探讨目前有争议的延迟断脐是否增加早产儿病理性黄疸的发生率。结果观察组中早产儿的血红蛋白为(167.3±27.4)g/L;红细胞压积为(51.3±8.67)%;贫血13例,占20.97%;发生病理性黄疸24例,占38.7%;氧分压为(82.4±9.67)mm Hg;二氧化碳分压为(45.6±3.73)mm Hg。对照组中早产儿的血红蛋白为(158.6±21.8)g/L;红细胞压积为(48.8±4.93)%;贫血25例,占38.46%;发生病理性黄疸21例,占32.3%;氧分压为(79.1±8.32)mm Hg;二氧化碳分压为(47.2±4.28)mm Hg。两组早产儿的血红蛋白、红细胞压积、发生贫血的比率、氧分压及二氧化碳分压方面有显著差异(P<0.05),在病理性黄疸方面差异无统计学意义(P>0.05)。结论采取延迟断脐可减少早产儿贫血的发生率,改善早产儿的氧分压及二氧化碳分压,不增加发生病理性黄疸的几率。
Objective To study the effect of delayed umbilical cord on premature infant. Methods Umbilical cord was treated with delayed umbilical cord dissection in preterm infants with severe preeclampsia who were delivered with cesarean section during 28 weeks to 37 weeks of gestation. The effects of delayed umbilical cord on preeclamptic hematocrit, hemoglobin and postnatal blood gas oxygen Partial pressure and partial pressure of carbon dioxide; to discuss whether the current controversial delay in breaking the umbilical cord increases the incidence of pathological jaundice in preterm infants. Results In the observation group, the hemoglobin in preterm infants was (167.3 ± 27.4) g / L; the hematocrit was (51.3 ± 8.67)%; anemia in 13 cases (20.97%); pathological jaundice in 24 cases (38.7% The pressure was (82.4 ± 9.67) mm Hg; the partial pressure of carbon dioxide was (45.6 ± 3.73) mm Hg. In the control group, hemoglobin in preterm infants was (158.6 ± 21.8) g / L; hematocrit was (48.8 ± 4.93)%; anemia in 25 cases (38.46%); pathological jaundice in 21 cases (32.3% (79.1 ± 8.32) mm Hg; the partial pressure of carbon dioxide was (47.2 ± 4.28) mm Hg. There were significant differences in hemoglobin, hematocrit, the incidence of anemia, partial pressure of oxygen and partial pressure of carbon dioxide in both groups (P <0.05). There was no significant difference in pathological jaundice (P> 0.05). Conclusion Delayed umbilical cord injury can reduce the incidence of anemia in preterm infants and improve partial pressure of oxygen and partial pressure of carbon dioxide in preterm infants without increasing the risk of pathological jaundice.