不同剂量维生素D对早产儿钙磷代谢影响的研究
2018-09-13郑琬丽李莉林丹
郑琬丽 李莉 林丹
[摘要] 目的 探讨不同剂量维生素D对早产儿钙磷代谢的影响。 方法 选取2015年2月~2016年2月本院入住的100例早產儿,按照随机数字表法分为高剂量组与低剂量组各50例,在早产儿10日龄时对高剂量组每天给予口服800 U维生素D,对低剂量组每天给予口服400 U维生素D。在20日龄、40日龄时检测早产儿血清中钙、磷和25-羟维生素D的含量。 结果 20日龄高剂量组早产儿的钙、磷、25-羟维生素D水平为(2.42±0.12)mmol/L、(1.82±0.53)mmol/L、(45.56±12.45)nmol/L,明显高于低剂量组的(2.03±0.13)mmol/L、(1.71±0.59)mmol/L、(42.51±9.27)nmol/L(P<0.05);40日龄高剂量组早产儿的钙、磷、25-羟维生素D水平为(2.56±0.14)mmol/L、(1.96±0.23)mmol/L、(73.46±18.57)nmol/L,与40日龄低剂量组的(2.12±0.21)mmol/L、(1.81±0.39)mmol/L、(64.48±15.37)nmol/L比较,差异有统计学意义(P<0.05)。 结论 维生素D能改善早产儿钙磷代谢状态,800 U效果优于400 U。
[关键词] 早产儿;维生素D;钙磷代谢;25-羟维生素D
[中图分类号] R722.6 [文献标识码] A [文章编号] 1673-9701(2018)12-0020-03
Influence of different doses of vitamin D on calcium and phosphorus metabolism in preterm infants
ZHENG Wanli LI Li LIN Dan ZHOU Cailing WANG Lizhen
Department of Neonatology, Enze Hospital of Taizhou Enze Medical Center (Group), Taizhou 318050, China
[Abstract] Objective To investigate the influence of different doses of vitamin D on calcium and phosphorus metabolism in preterm infants. Methods 100 preterm infants admitted in our hospital from February, 2015 to February, 2016 were selected and randomized into high-dose group and low-dose group by using random number table, each had 50 cases. At the age of 10 days, infants in high-dose group were given vitamin D 800U per day by oral administration and infants in low-dose group were given vitamin D 400U per day by oral administration. The levels of serum calcium, phosphorus and 25-hydroxy vitamin D at the age of 20 and 40 days were assessed. Results The levels of alcium, phosphorus and 25-hydroxy vitamin D at the age of 20 days in high-dose group were(2.42±0.12)mmol/L, (1.82±0.53)mmol/L and (45.56±12.45)nmol/L respectively, which were significantly higher than those in low-dose group (2.03±0.13)mmol/L, (1.71±0.59)mmol/L and (42.51±9.27)nmol/L (P<0.05). The levels of alcium, phosphorus and 25-hydroxy vitamin D at the age of 40 days in high-dose group were(2.56±0.14)mmol/L, (1.96±0.23)mmol/L and(73.46±18.57) mmol/L respectively, which were significantly different from those in low-dose group(2.12±0.21)mmol/L, (1.81±0.39)mmol/L and(64.48±15.37)nmol/L (P<0.05). Conclusion Vitamin D could improve the calcium and phosphorus metabolism in preterm infants. The effectiveness of 800 U was better than that of 400 U.
[Key words] Preterm Infants; Vitamin D; Calcium and phosphorus metabolism; 25-hydroxy vitamin D
早产儿指胎龄<37周的新生儿[1],由于过早的出生导致身体发育的不完全,以往早产儿存活率极低[2],但随着最近几年临床医学的发展和新生儿护理技术的提高,早产儿的存活率得到了良好的改善[3]。但由于先天早产而引起的钙磷缺乏以及钙磷代谢不正常所引发的各种代谢性骨病成为目前限制早产儿恢复机体健康的重要问题[4]。因此如何改善早产儿钙磷代谢异常的问题刻不容缓[5]。
维生素D是维持人体正常钙磷代谢的主要维生素,缺少维生素D会直接导致人体钙、磷的异常代谢[6],引发各种人体骨病甚至影响神经、免疫等功能的正常作用[7]。人体内钙、磷的水平是诊断早期代谢骨病的重要依据,对预防和治疗代谢骨病有重要意义[8],同时25-羟维生素D是体内衡量维生素D水平的具体指标。研究表明早产儿极易缺乏维生素D,早产儿体内的维生素D水平严重低于正常新生儿水平,因此及早掌握早产儿体内维生素D水平并及时补充维生素D对改善早产儿的机体有着重要的意义[9]。……
