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降低极低出生体重儿输血频率的管理指南。

A management guideline to reduce the frequency of blood transfusion in very-low-birth-weight infants.

作者信息

Rabe Heike, Alvarez Jose R Fernandez, Lawn Carolyn, Seddon Paul, Amess Philip N

机构信息

Department of Neonatology, Brighton and Sussex University Hospitals NHS Trust, United Kingdom.

出版信息

Am J Perinatol. 2009 Mar;26(3):179-83. doi: 10.1055/s-0028-1103024. Epub 2008 Dec 15.

Abstract

Very-low-birth-weight (VLBW) infants often require blood transfusions for anemia. Studies have investigated the preventative effect of delayed cord clamping, high-dose iron, and costly recombinant erythropoietin. As part of our unit clinical governance framework to improving patient care, we audited the effect of a preventative management guideline that combines delayed cord clamping for 30 seconds with early protein intake and early oral iron supplementation (6 mg/kg from days 7 to 10 of life, if milk feeds 60 mL/kg/d) combined with a restrictive transfusion policy in infants < 32 weeks' gestation and < 1500 g birth weight. Data on blood transfusions in VLBW infants during the first 6 weeks of life collected before the start of the new regimen (period I) were compared with data in consecutively born VLBW infants after the introduction of the management guideline (period II). Age (in days) when milk feeds and oral iron supplements were introduced was recorded. Statistical analysis used Wilcoxon signed-rank test. VLBW infants in period I ( N = 18, median birth weight 1001 g [727; 1158]) received a median of four transfusions (0.75; 9) compared with 1.5 (0.75; 5, P = 0.01) VLBW infant transfusions in period II ( N = 22, median birth weight 967 g [792; 1131]). Milk feeds of 60 mL/kg/d were achieved on median day 12 (6; to 16), and iron was introduced on median day 38 (21; to 44) in period I compared with milk feeds on day 9 (7; 15, P = 0.05) and oral iron on day 16 (11; 21, P < 0001) in period II. The combination of a 30-second delay in cord clamping, early protein and iron, and a change of transfusion thresholds reduced the number of blood transfusions by half.

摘要

极低出生体重(VLBW)婴儿常因贫血需要输血。已有研究探讨了延迟脐带结扎、高剂量铁剂以及昂贵的重组促红细胞生成素的预防效果。作为我们科室改善患者护理的临床管理框架的一部分,我们审核了一项预防性管理指南的效果,该指南将30秒延迟脐带结扎与早期蛋白质摄入及早期口服铁剂补充(出生后第7至10天,若奶量摄入为60 mL/kg/d,则为6 mg/kg)相结合,并对孕周<32周、出生体重<1500 g的婴儿采用限制性输血策略。将新方案开始前(第一阶段)收集的VLBW婴儿出生后前6周的输血数据,与引入管理指南后(第二阶段)连续出生的VLBW婴儿的数据进行比较。记录引入奶量喂养和口服铁剂补充时的年龄(天数)。统计分析采用Wilcoxon符号秩检验。第一阶段的VLBW婴儿(N = 18,中位出生体重1001 g [727;1158])接受输血的中位数为4次(0.75;9),而第二阶段的VLBW婴儿(N = 22,中位出生体重967 g [792;1131])接受输血的中位数为1.5次(0.75;5,P = 0.01)。第一阶段中,奶量达到60 mL/kg/d的中位时间为出生后第12天(6;至16),引入铁剂的中位时间为出生后第38天(21;至44),而第二阶段奶量达到60 mL/kg/d的时间为出生后第9天(7;15,P = 0.05),引入口服铁剂的时间为出生后第16天(11;21,P < 0.001)。30秒延迟脐带结扎、早期蛋白质和铁剂补充以及输血阈值的改变相结合,使输血次数减少了一半。

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