氮末端脑钠肽前体对机械通气撤机的预测价值

Chinese Journal of Emergency Medicine(2016)

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Abstract
目的 评价氮末端脑钠肽前体(NT-proBNP)水平对机械通气患者撤机结局的预测价值.方法 回顾性分析2014年1月~2014年12月收治于瑞金医院EICU的机械通气患者42例,统计其病因构成.根据自主呼吸试验(spontaneous breathing trial,SBT)后48 h的撤机结局,将患者分为撤机成功组和撤机失败组.比较两组患者入院时基础NT-proBNP1、SBT前NT-proBNP2、SBT后48 h的NT-proBNP3水平及SBT前72 h液体平衡的差异、并通过绘制受试者工作特征曲线(ROC曲线),分析NT-proBNP2预测撤机失败的截点值.结果 42例患者中,27例撤机成功,15例失败.两组患者既往心功能不全病史及基础NT-proBNP1水平差异无统计学意义(P=0.121);撤机失败组患者NT-proBNP2及NT-proBNP3水平均大于成功组(P =0.01,0.003);NT-proBNP2预测撤机失败的ROC曲线下面积为0.862 (95%CI:0.753~0.971),其预测撤机失败的截点为715.5 pg/mL,在此截点下敏感度93.3%,特异度74.1%.结论 患者SBT前的NT-proBNP2水平在预测撤机结局中具有一定参考价值,可作为撤机筛查指标之一.
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Key words
Mechanical ventilation,Weaning,N-terminal-pro-brain natriuretic peptide,Spontaneous breathing trial
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