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严重抑制的左心室收缩功能已被证明是引起冠心病患者众多不良预后的主要危险因素。目前左心室收缩功能不全的冠心病患者的治疗以冠状动脉血运重建治疗为中心，在有足够存活心肌的情况下，血运重建治疗往往被认为可以改善患者的左心室功能及预后。鉴于日益增多的左心室收缩功能不全的冠状动脉疾病患者，确定其能否从血运重建治疗中获益，已成为目前研究者感兴趣的问题。“,”Severe left ventricular ( LV) systolic dysfunction has previously been shown to be a major risk factor for adverse outcomes in patients with coronary artery disease .Current treatments for patients with LV systolic dysfunction and concomitant coronary artery disease , center around coronary revascularization .Revascularization is frequently advocated to improve ventricular function and prognosis for patients with heart failure due to coronary artery disease , especially when there is evidence of extensive myocardial viability .Given the rapid increase of the patient population with LV systolic dysfunction and coronary artery disease , intense interest has been directed in determining whether patients benefit from revascularization .