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  • Title: Repair of left ventricular aneurysm during off-pump coronary artery bypass surgery.
    Author: Yu Y, Gu CX, Wei H, Liu R, Chen CC, Fang Y.
    Journal: Chin Med J (Engl); 2005 Jul 05; 118(13):1072-5. PubMed ID: 16098258.
    Abstract:
    BACKGROUND: Acute myocardial infarction can result in left ventricular aneurysm, which may in turn cause congestive heart failure, ventricular arrhythmia and thromboembolic events. This study evaluates results achieved with a modified linear closure of left ventricular aneurysms during off-pump coronary artery bypass surgery. METHODS: From January 2001 to May 2004, 75 patients were operated on for nonruptured, postinfarctional, left ventricular aneurysm during off-pump coronary artery bypass surgery. Repair was completed on the beating heart to minimize ischaemia and allow assessment of wall function and viability to guide closure. All patients presented with symptoms of angina and congestive heart failure or ventricular arrhythmia. The majority (75%) of the patients were in NYHA functional class III or IV. Preoperative ejection fraction was 26% +/- 9%. The mean left ventricular, end diastolic diameter was (57.5 +/- 7.1) mm. The ventricular preoperative and postoperative performances were compared. chi2 test and Student's t test were used to analyse the outcomes. A P value less than 0.05 was considered significant. RESULTS: Hospital mortality was 1.3% (1/75). Coronary artery bypass was performed with an average of (3.3 +/- 1.2) grafts per patient. At the time of followup, all the patients had no symptoms. The mean NYHA class and ejection fraction increased significantly (P < 0.001). The mean left ventricular, end diastolic diameter decreased significantly (P < 0.001). CONCLUSIONS: Surgical closure of left ventricular aneurysm can be performed during off-pump coronary artery bypass. The operation is associated with a low inhospital mortality and morbidity. A postoperative improvement in the early term cardiac functions and symptoms and quality of life was documented, increasing our expectations of an increased long-term survival.
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