脓毒症/严重脓毒症患儿维生素D水平与预后

目的 了解儿童重症监护病房(pediatric intensive care unit,PICU)脓毒症/严重脓毒症患儿维生素D缺乏程度;分析患者入院时维生素D水平与预后之间的关系.方法 本研究为多中心、前瞻性、观察性研究.以2013年3月1日至2014年3月30日期间入住3家儿童医院PICU符合危重症标准的脓毒症/严重脓毒症患儿作为研究对象.入组患者入院24h内留取静脉血2 mL,采用酶联免疫法检测血清25 (OH)维生素D水平.根据维生素D水平,将患者分为维生素D充足、轻度维生素D缺乏和重度维生素D缺乏三组.分析入院时维生素D水平与PICU住院时间、总住院时间、出院病死率、28d病死率和经济费用之间的关系.结果 共纳入病例194例.其中男117例(60.3％),女77例(39.7％).脓毒症/严重脓毒症患分别为96例和98例.出院病死率和28 d病死率分别为6.7％和24.2％.入院时中位维生素D水平9.79 ng/mL (5.32,18.46) ng/mL,维生素D缺乏率77.8％ (151/194),其中重度维生素D缺乏率达50.5％ (98/194).入院时存在重度维生素D缺乏的患者出院病死率显著增加(P=0.011).维生素D水平与PICU住院时间、总住院时间和经济花费间没有进行相关分析.结论 PICU脓毒症/严重脓毒症儿童中维生素D缺乏率高达77.8％;重度维生素D缺乏患者,出院病死率更高.

Relationship of vitamin D in children with sepsis/severe sepsis and outcomes in PICU

Objective To determine the vitamin D status in children with sepsis/severe sepsis in pediatric intensive care unit (PICU) in order to explor the association between vitamin D status and clinical outcomes,in turn to provide evidence for optimizing nutrition support.Methods It was a prospective,observational,multi-center study,carried out in patients with sepsis/severe sepsis from March 1,2013,to March 30,2014,in the PICUs of three tertiary-care children's hospitals.Total serum 25-hydroxy vitamin D [25 (OH) D] was measured by using an enzyme-linked immunosorbent assay at admission.The association of vitamin D status at admission with length of PICU length of stay,total hospital stay,in-hospital mortality,28-days mortality and costs were analyzed.Results A total of 194 patients includng 117 boys (60.3％)and 77 girls (39.7％) were enrolled.There were 96 patients with sepsis and 98 with severe sepsis.The mortality on discharge and 28 days were 6.7％ and 24.2％ respectively.The median vitamin D level was 9.79 ng/mL (5.32,18.46) at admission.Of them 77.8％ (151/194) had vitamin D deficiency and 50.5％ (98/194) had severe vitamin D deficiency.Patients with severe vitamin D deficiency,had higher mortality on discharge (P =0.011).Vitamin D status had no significant correlations with 28 days mortality,length of PICU stay,total hospital stay and costs.Conclusions More than three-quarters (77.8％) of children with sepsis/severe sepsis in PICUs had Vitamin D deficiency.Patients with severe vitamin D deficiency at admission had higher risk of mortality at discharge.