[
Abstract]
[
Full Text PDF] （in Japanese / 1906KB）
[Members Only And Two Factor Auth.] J.Jpn. Surg. Soc.. 89(9): 1450-1453, 1988
Report on the annual meeting
MINIMAL REQUIREMENT FOR SUCCESSFUL LATE RESULTS OF VALVE REPLACEMENT FOR AORTIC REGURGITATION AND AORTIC STENOSIS
This study was consisted of 69 patients undergoing aortic valve replacement for chronic aortic regurgitation(AR)and 29 patients, for aortic stenosis(AS)between 1978 and 1985. There was no operative death. There were 7 late cardiac deaths in AR patients, with preoperative left ventricular end-systolic volume index(LVESVI)＞200ml/m
2. None of the 55 patients with an LVESVI＜200m/m
2 died of cardiac-causes. In AR patients with preoperative LVESVI＞200ml/m
2, despite the postoperative reduction of the wall stress, the ejection fraction failed to return to normal, indicating that irreversible myocardial dysfunction was responsible in these patients. There were two cardiac-related deaths in 29 AS patients, who had preoperative LVESVI＞100ml/m
2. In postoperative AS patients with LVESVI＞100ml/m
2, postoperative contractile function of the left ventricle was poor.
In conclusion, minimal preoperative left ventricular function for satifactory late results and reversal of functional results may be at a lower level was LVESVI 200ml/m
2 in AR patients and 100ml/m
2 in AS patlents.
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