Prospective Observational Study of Trimetazidine Influence on Mitochondrial Metabolism in Human Heart Ventricle

Trimetazidine (1-\[2,3,4-trimethoxybenzyl\] piperazine dihydrochloride) is a clinically effective antianginal agent. Despite these clinical successes, the understanding of trimetazidine's mechanism of action remains incomplete, particularly influence of trimetazidine on mitochondrial function in isolated human cardiomyocytes. The investigators will perform this study to seek possible differences in mitochondrial respiration related to standard preoperative enrolled trimetazidine therapy.