JACC: 心血管事件的独立预测因子--低密度脂蛋白胆固醇变化

2015-05-07 张旭栋译 MedSci原创

美国纽约大学医学院Sripal Bangalore博士等人探索了冠心病患者中,低密度脂蛋白胆固醇变化对于心血管结局的影响,其研究成果发表在4月份Journal of the American College of Cardiology期刊上。 背景:研究表明,通过使用他汀类药物降低低密度脂蛋白胆固醇(LDL-C),最终能够显著减少心血管事件发生。然而LDL-C水平变化对心血管结局的影响仍然未知。

美国纽约大学医学院Sripal Bangalore博士等人探索了冠心病患者中,低密度脂蛋白胆固醇变化对于心血管结局的影响,其研究成果发表在4月份Journal of the American College of Cardiology期刊上。

背景:研究表明,通过使用他汀类药物降低低密度脂蛋白胆固醇(LDL-C),最终能够显著减少心血管事件发生。然而LDL-C水平变化对心血管结局的影响仍然未知。

目的:本研究旨在评估LDL-C水平变化对心血管结局的影响。

方法:研究评估了参加了TNT(治疗新目标)试验且LDL-C<130mg/dl患有冠心病的患者,将其随机分配为接受阿托伐他汀80 mg /天与10mg/天两组,两组患者至少有过一次基线后LDL-C测量。通过不同的测量指标评估LDL-C的变化:标准差(SD),平均连续变异(ASV),变异系数,变异独立平均值,前2个参数作为主要测量参数。主要结局是冠脉事件,次要结局是心血管事件,死亡,心肌梗死卒中

结果:9572例患者中,与服用阿托伐他汀10mg/天患者相比,服用阿托伐他汀80mg/天患者其SD和ASV均显著降低(SD:12.52±7.43比12.03±9.70; P = 0.005; ASV:13.76±8.69比12.84±10.48; P <0.0001)。模型调整后,LDL-C变异每增加一个SD能够升高16%冠脉事件的风险(风险比[HR]:1.16;95%置信区间:1.10〜1.23; P <0.0001),升高11%心血管事件(HR:1.11; 95%CI:1.07〜1.15; P <0.0001),升高23%死亡率(HR:1.23;95%CI:1.14至1.34; P <0.0001) ,升高10%心肌梗死率(HR:1.10; 95%CI:1.02〜1.19; P =0.02),以及升高17%中风率(HR:1.17;95%CI:1.04〜1.31; P =0.01)。

结论:患有冠心病患者,LDL-C变化是心血管事件的独立预测因子。
 
原文出处:

Bangalore S, Breazna A, DeMicco DA, Wun CC, Messerli FH. Visit-to-Visit Low-Density Lipoprotein Cholesterol Variability and Risk of Cardiovascular Outcomes: Insights From the TNT Trial. Journal of the American College of Cardiology. 2015;65(15):1539-48.

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    2016-04-03 hbwxf
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