Dobutamine 과 Adenosine Triphosphate 또한 Sodium Nitroprusside 병합 사용시 혈역학 및 폐내 Shunt 효과의 변화

The purpose of this study was to evaluate the efficacy of adenosine triphosephate (ATP) in comparison to sodium nitroprusside (SNP) in reducing left ventricular afterload in 20 patients, ASA physical status I, during ethrane-N2O anesthesia. Hemodynamic effects of intravenous ATP (30~250 ug/kg/min) were compared with those of SNP (0.3~2.5 ug/kg/min) in group 1 (n=10). In group 2 (n=10), hemodynamic and intrapulmonary shunt effects of dobutamine (1 ug/kg/min) alone and in combination with ATP or SNP, required to maintain mean arterial pressure around 70 mmHg, were compared. The results were as follows. 1) Both ATP and SNP reduced arterial pressure rapidly resulting from a marked decrease in systemic vascular resistance in a dose-related manner. 2) Cardiac index increased from 3.31±0.201/min/㎡ to 4.04±0.281/min/㎡ (p