抗高血压治疗期间心电图左心室肥厚消退及其对主要心血管事件的预测作用
Regression of Electrocardiographic Left Ventricular Hypertrophy During Antihypertensive Treatment and the Prediction of Major Cardiovascular Events
摘要
背景:心电图左心室肥厚(left ventficular hypertophy,LVH)是心血管并发症及死亡的强预测指标。然而,在抗高血压治疗期间心电图LVH程度变化的预测价值仍不清楚。
目的:验证抗高血压治疗期间心电图LVH程度越轻,心血管并发症与死亡率越低,并与血压水平及其降低和治疗方式无关的假说。
设计、设置及参试者:1995~2001年于9193例55至80岁(均值,67岁)男性和女性高血压患者进行的双盲、随机、平行组研究。心电图LVH用康奈尔电压一时间乘积或Sokolow—Lyon电压表示,患者均入选氯沙坦降低高血压终点事件干预研究(Losartan Intervention For Endpoint,LIFE)。
干预:以氯沙坦或阿替洛尔为基础的治疗方案,随访评估至少4年(均值,4.8年[SD,0.9])。主要结果测定:心血管死亡、心肌梗死或卒中复合终点与基线及随后1年或每年心电图LVH严重程度的关系。
结果:1096例(11.9%)发生心血管死亡、非致死性心肌梗死或卒中。在控制治疗方式、基线Framingham危险记分、基线和治疗期间血压以及基线心电图LVH严重程度(康奈尔乘积或Sokolow—Lyon电压)的Cox回归模型中,康奈尔乘积和Sokolow—Lyon电压所示治疗中LVH严重程度较低者,复合心血管终点事件的发生率分别降低14%和17%(康奈尔乘积每降低1050mm×ms,[1-SD]:校正风险比[hazard ratio,HR],0.86;95%可信区间[confidence interval,CI],0.82~0.92;P〈0.001;Sokolow—Lyon电压每降低10.5mm[1-SD]:HR,0.83;95%CI,0.78~0.88;P〈0.01)。在平行分析中,较低的康奈尔乘积和Sokolow—Lyon电压均与较低的心血管死亡(分别为HR,0.78;95%CI,0.73~0.83;P〈0.001和HR,0.80;95%CI,0.73~0.87;P〈0.001)、心肌梗死(HR,0.90;95%CI,0.82~0.98;P=0.01和HR,0.90;95%CI,0.81~1.00;P=0.04))和卒中(HR,0.90;95%CI,0.84~0.96;P=0.002;HR,0.81;95%CI,0.75~0.89;P〈0.001)独立相关。
结论:抗高血压治疗期间,根据康奈尔乘积和Sokolow—Lyon电压判定的心电图LVH程度较轻与心血管并发症和死亡可能性较低相关,而且独立于原发性高血压患者的血压降低及治疗方式。旨在改善或预防心电图LVH的抗高血压治疗可以改善患者的预后。
作者
Peter M. Okin, MD
Richard B. Devereux, MD
Sverker Jern, MD
Sverre E. Kjedsen, MD,PhD
Stevo Julius, MD, ScD
Markkus S. Nieminen, MD, PhD
Steven Snapinn, PhD
Katherine E. Harris, DrPH
Peter Aurup, MD
Jonathan M. Edelman, MD
Hans Wedel, PhD
Lars H. Lindholm, MD, PhD
Bjorn Dahlof
MD, PhD
倪靖炜(译)
沈卫峰(校)
出处
《美国医学会杂志(中文版)》
2005年第6期323-329,共7页
The Journal of the American Medical Association(Chinese Edition)
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