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Eur J Cardiothorac Surg 2001;20:319-323
© 2001 Elsevier Science NL
Department of Cardiovascular Surgery, Hayama Heart Center, 1898 Shimoyamaguchi, Hayama, Kanagawa 240-0116, Japan
Received 15 January 2001; received in revised form 17 April 2001; accepted 27 April 2001.
Corresponding author. Tel.: +81-468-75-1717; fax: +81-468-75-3636
e-mail: mail{at}hayamaheart.gr.jp
Objective: In order to treat ischemic cardiomyopathy, which is defined as non-aneurysmal diffuse akinetic left ventricle with chronic heart failure following myocardial infarction, the mid-term effect of the endoventricular circular patch plasty (EVCPP) was studied. Materials and methods: EVCPP has been performed on 54 patients (46 men and eight women with a mean age of 61 years) during 4 years from March 1997 to December 2000. Thirty-two patients (59%) were NYHA class III and 22 patients (41%) were class IV. Nine patients (17%) had mild angina pectoris before the operation but others had no chest pain. Single, double, triple, and left main disease were noted in six, 13, 32, and three patients, respectively. Mean left ventricular ejection fraction was 23.3±6.3% (6–30%). Coronary artery bypass grafting was concomitantly undergone by 51 patients (94%) and mitral valve reconstruction was done on 19 patients (35%). Results: Two patients (3.7%) needed an intra-aortic balloon pump to wean from cardiopulmonary bypass. Seven patients (12.9%) died in the hospital. Among them, two patients (4.4%) out of 45 patients who underwent elective operation died of stroke and heart failure. Five patients (55.5%) out of nine patients who required emergency operation died of heart failure and multiorgan failure. Late death occurred in six patients (11.1%) due to arrhythmia and heart failure in each of three patients. Out of 41 survivors, 38 patients returned to NYHA class I or II and three patients to class III. Out of 50 patients who underwent left ventricular study before and after operation, ejection fraction increased from 22.8±6.6 to 36.2±8.0% and mean left ventricular end-diastolic volume and left ventricular end-systolic volume indices reduced from 152.8±24.6 to 105.0±36.5 and from 113.6±45.7 to 66.4±28.4 ml/m2, respectively. Mean pulmonary wedge pressure decreased from 19.1±8.8 to 14.9±6.8 mmHg. One-, 2-, and 3-year actuarial survival rates were 87.9, 82.7 and 77.2%, respectively. Conclusion: Left ventriculoplasty using EVCPP is effective to exclude the akinetic LV segment, and left ventricular function and clinical status improve in patients with ischemic cardiomyopathy.
Key Words: Heart failure • Myocardial infarction • Ischemic cardiomyopathy • Ventriculoplasty
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