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阜外医院李建军等研究称,Lp(a)可预测冠脉介入术后心血管事件风险

2020-02-04 朱朱 中国循环杂志

1月30日,阜外医院李建军教授研究团队联合北京宣武医院、北京安贞医院研究人员发表的一项多中心、前瞻性队列研究提示,在冠脉介入术后的稳定性冠心病患者中,血浆脂蛋白(a)[Lp(a)]水平对心血管事件有较好的预测价值,Lp(a)水平高(≥30 mg/dl)者预后不良。研究者认为,在行择期经皮冠脉介入术前进行血浆Lp(a)水平,对于稳定性冠心病患者的风险分层、临床治疗决策制定(降脂治疗强度、传统的可控危

1月30日,阜外医院李建军教授研究团队联合北京宣武医院、北京安贞医院研究人员发表的一项多中心、前瞻性队列研究提示,在冠脉介入术后的稳定性冠心病患者中,血浆脂蛋白(a)[Lp(a)]水平对心血管事件有较好的预测价值,Lp(a)水平高(≥30 mg/dl)者预后不良。

研究者认为,在行择期经皮冠脉介入术前进行血浆Lp(a)水平,对于稳定性冠心病患者的风险分层、临床治疗决策制定(降脂治疗强度、传统的可控危险因素管理)可能有是有价值的。

研究者指出,要想改变相关指南建议,还需要进一步开展降Lp(a)治疗随机对照试验来获得证据。

根据中国成人血脂异常防治指南,对于脂蛋白(a),正常人群中脂蛋白(a)通常以 30 mg/dl为切点,高于此水平者患冠心病的危险性明显增高。

在该研究中,Kaplan–Meier分析显示,平均随访4.9年期间,Lp(a)水平≥30 mg/dl者中无事件生存率明显降低Lp(a)水平<15 mg/dl者。

多因素Cox回归分析进一步表明,与Lp(a)水平<15 mg/dl者相比,Lp(a)水平≥30 mg/dl者中心血管事件发生风险增加1.1倍,心血管死亡、中风风险分别增加0.9倍、1倍。

Lp(a)水平每升高1个标准差,心血管事件和中风风险分别增加30%和29%。

研究者发现,不论是作为连续变量还是分类变量,将血浆Lp(a)水平加入Cox模型后,该模型对冠脉介入术后的稳定性冠心病患者预后的预测价值明显提高了。

该研究一共纳入4078例接受冠脉介入治疗的稳定性冠心病患者,血浆Lp(a)水平<15、15~30、≥30 mg/dl分别占占49.2%、20.2%、30.6%。

近5年的随访期间,7.7%的患者发生心血管事件,包括83例心血管死亡、70例非致死性心肌梗死和162例中风。

出现心血管事件的患者的血浆Lp(a)水平明显高于未发生心血管事件的患者(21.9 mg/dl vs 15.13 mg/dl)。

来源:

1、Predicting Cardiovascular Outcomes by Baseline Lipoprotein(a) Concentrations: A Large Cohort and Long‐Term Follow‐up Study on Real‐World Patients Receiving Percutaneous Coronary Intervention. J Am Heart Assoc. 2020; 9: e014581

2、中国成人血脂异常防治指南修订联合委员会. 中国成人血脂异常防治指南(2016年修订版). 中国循环杂志, 2016, 31: 937-953.

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