肝纤维化标志物纤维化-5指数在急性心力衰竭患者中的预后价值
—— 作者: 时间:2022-02-21
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44
在全球范围内,心力衰竭是引起健康问题的主要原因之一,其发病率随着社会老龄化而不断增加[1]。因为心脏负责将血液输送到全身,心脏功能的恶化对包括肝脏在内的所有器官都有负面影响。心力衰竭引起的全身静脉充血和灌注不足会导致肝功能不全和肝功能异常,随后肝纤维化标志物增加[2]。到目前为止,许多肝纤维化标志物已被报道与心力衰竭患者的不良预后相关[3-5];然而,心力衰竭的最佳肝纤维化标志物尚未阐明。
纤维化-4指数(FIB-4)考虑了年龄、天冬氨酸转氨酶(AST)、丙氨酸转氨酶(ALT)和血小板(PLT)计数,是肝病患者[如乙型肝炎病毒(HBV)和丙型肝炎病毒(HCV)感染患者]中最广泛接受的肝纤维化标志物之一[6-8]。FIB-4也被证明是心力衰竭患者死亡或再住院的良好预后标志物[9-11]。最近,有学者提出了一种新的简易肝纤维化标志物——纤维化-5(FIB-5)指数,通过白蛋白、碱性磷酸酶(ALP)、AST/ALT比值和PLT计数计算。FIB-5对肝纤维化的预测价值最初是在HCV感染患者中得到验证[12]。最近的研究表明,FIB-5在评估HBV和HCV感染患者的肝纤维化方面优于FIB-4[13-14]。基于这些研究,日本大阪医科大学Maeda等人近期进行的一项研究,比较了FIB-4和FIB-5在心力衰竭患者中的预后价值[15]。
研究者在906例因心力衰竭住院的患者中计算了他们出院时的FIB-4和FIB-5评分。根据FIB-5评分将患者分为三组:低FIB-5组(n=303)、中FIB-5组(n=301)和高FIB-5组(n=302)。主要终点为心源性死亡或心力衰竭再住院。与其他两组相比,低FIB-5组年龄更大,下腔静脉直径更大,脑利钠肽水平更高。
低、中、高FIB-5组分别有156例(51.5%)、110例(36.5%)和54例(17.9%)患者出现主要终点事件(P<0.001)。在Cox比例风险分析中,在校正混杂因素后,低FIB-5与主要终点独立相关。这种关联在左室射血分数(LVEF)保持和降低的患者中是一致的,并就FIB-5的预后影响而言,LVEF表型之间没有显著的相互作用(相互作用P=0.311)。
在未经调整的模型中,FIB-5的曲线下面积优于FIB-4(FIB-4,0.647;95%CI:0.611~0.683;FIB-5,0.686;95%CI:0.651~0.722;P=0.007)(图1)。此外,研究者发现从FIB-4模型到FIB-5模型的变化提供了显著的连续净重新分类指数(NRI)(0.530;95%CI:0.399~0.662;P<0.001)和综合判别改善指数(IDI)(0.072;95%CI:0.057~0.088;P<0.001)。
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图1.用于预测主要终点的受试者工作特征曲线下面积
(引自参考文献)
综上所述,FIB-5是一种有用的风险分层标志物,在心力衰竭住院患者中具有比FIB-4更好的预后价值。
图片
参考文献:
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研究
肝纤维化
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