Abstract
Metabolism in respect of oxygen demand and supply relationship during VAD uses were evaluated and compared between a coronary group (2 cases, A-C bypass and VSP closure+LV aneurysmectomy) and a valvular group (2 cases, MVR+TAP and Re-MVR+AVR). Cardiac index (1/min/m2): 2.43 in coronary group, 3.39 in valvular group respectively (p<0.01), oxygen availability index (ml/min/m2): 333.6, 506.5 (p<0.001), oxygen consumption index (ml/min/m2): 107.1, 154.9 (p<0.001) and oxygen extraction ratio (%): 29.9, 30.8 (N. S). Valvular group showed significantly higher level of both oxygen demand and supply than coronary group and was supposed to have compensated for ocult organ failure induced by long lasted congestive heart failure.
