Abstract
The technique of a new wrap onfiguration of double dynamic cardiomyoplasty was performed in eight normal heart dogs. Both left and right latissimus dorsi muscles were dissected. The heart was exposed through a median stemotomy. The heart was lifted and both transvers segment of muscle flap edges were sutured together then sutured flaps were placed under it. The left muscle flap was sutured to the right ventricular epicardium. The right muscle flap was sutured to the left muscle flap overlapping the left ventricle. Both left and right muscle flaps were stimulaled by the cardiac stimulator (BC-03 Fukuda Denshi LTD). Following hemodynamic results (mean±SE) were obtained. Cardiac output increased from 0.96±0.121/min to 1.24±0.161/min (p<0.05). Stroke volume increased from 7.7±1.2ml to 10.2±1.4ml (p<0.05). Left ventricular pressure increased from 1l0±5mmHg to 138±6mmHg (p<0.05). Left ventricular pressure dp/dt increased from 1387±102mmHg/s to 1778±164mmHg/s (p<0.05). Aortic pressure increased from 110±5mmHg to 138±6mmHg (p<0.05). These hemodynamic results indicated that the double dynamic cardiomyoplasty provides significant hemodynamic effebcts on left ventricular function.
