Objective: To evaluate the clinical outcomes of on-pump total arterial revascularization with bilateral radial artery (BRA) and left internal mammary artery (LIMA) as conduits in coronary artery bypass grafting (CABG) patients with left ventricular dysfunction (LVD). Methods: All the perioperative medical records and follow-up results of coronary artery disease patients with left ventricular ejection fraction (LVEF) ≤ 40% undergoing CABG from 24 heart centers of 15 provinces and autonomous regions in China between July 2015 and December 2019 were retrospectively analyzed. Results: A total of 87 consecutive patients (55 males and 32 females) underwent on-pump CABG with BRA and LIMA, with a mean age of (57.5±9.1) years old. There were 22 patients complicated with primary hypertension, 12 with diabetes mellitus, 8 with peripheral vascular disease, 7 with chronic obstructive lung disease, 12 with mild renal injury and 3 with partial aortic calcification. There were 43 cases with in-stent stenosis, and 21 had left main disease. The mean LVEF and left ventricular end-diastolic diameter (LVEDD) was (35.5±7.3)% and (65.5±2.6) mm, respectively. The mean graft number, aortic cross-clamp time and cardiopulmonary bypass duration was 3.2±0.9, (90.5±22.7) min and (113.4±19.2) min, respectively. There were 32 mitral and 9 aortic valve replacements, and 5 tricuspid annuloplasties. Prophylactic intra-aortic balloon pumps were implanted in 27 patients. There were 2 operative deaths from acute heart failure. After surgery, there were 15 cases of atrial fibrillation, 1 case of acute kidney injury, 1 case of acute myocardial infarction, and 1 cases of stroke. All the patients fulfilled the follow-up, with a mean time of (39.5±7.7) months. At 3 months after surgery, LVEDD was decreased and LVEF was improved significantly compared with pre-operative indicators [(53.0±1.5) mm vs (65.5±2.6) mm, t=9.51 P=0.02; (45.2±3.3)% vs (35.5±7.3)%, t=13.79, P=0.001]. No major cardiac events were reported during the follow-up. At (30.5±7.4) months after surgery, 62.4% of patients (53/85) underwent coronary CT angiography examination, and the results indicated that the graft patency was 98.8%, with only one case of RA occlusion occurred. Conclusion: In selected patients of LVD, on-pump total arterial revascularization with BRA and LIMA conduits was proved to be safe and effective.
目的： 探讨运用双桡动脉（RA）与左乳内动脉（LIMA）桥行体外循环下全动脉冠状动脉旁路移植（CABG）术治疗左室功能低下（左室射血分数≤40%）冠心病患者的效果。 方法： 收集15个省、自治区24家心脏中心2015年7月至2019年12月间对左室功能低下冠心病患者行体外循环下全动脉CABG的临床资料，对患者围手术期资料及随访结果进行回顾性分析。 结果： 共纳入87例患者，男55例，女32例，年龄（57.5±9.1）岁。合并原发性高血压22例，糖尿病12例，周围血管病8例，慢性阻塞性肺疾病7例，轻度肾损害12例，升主动脉钙化3例。合并支架内狭窄者43例，左主干病变21例。术前左室射血分数（35.5±7.3）%，左室舒张末期内径（65.5±2.6）mm。远端吻合口（3.2±0.9）个，升主动脉阻断时间（90.5±22.7）min，体外循环时间（113.4±19.2）min。二尖瓣置换32例，主动脉瓣置换9例，三尖瓣成形5例；27例预防性植入主动脉内球囊反搏（IABP），2例死于急性心力衰竭，手术死亡率2.3%（2/87）。术后房颤15例、脑卒中1例、急性肾功能不全1例、急性心肌梗死1例。术后随访（39.5±7.7）个月，随访率100%，随访中无死亡，无重要心血管事件发生；术后3个月左室舒张末期内径减小[（53.0±1.5）mm比（65.5±2.6）mm，t=9.51，P=0.02]，左室射血分数提高[（45.2±3.3）%比（35.5±7.3）%，t=13.79，P=0.001]；心绞痛分级术后亦有明显改善（≤2级者：98.8%比5.7%，χ(2)=17.21，P=0.001）。共有62.4%（53/85）的患者于术后（30.5±7.4）个月接受CT血管造影（CTA）检查，仅1例RA桥狭窄，通畅率98.8%。 结论： 在选择合适的病例中，双RA与LIMA的全动脉CABG术治疗冠心病伴左室功能低下安全有效。.
Keywords: Coronary artery bypass; Internal mammary artery; Radial artery; Retrospective study; Ventricular dysfunction, left.