抄録
It is very important to understand hemodynamics during extracorporeal circulation. So we intended to apply the ultrasonic flowmeter (MUV-2100) to measure venous and arterial flows accurately during extracorporeal circulation. This study was done to evaluate the reliability of the data measured by the ultrasonic flowmeter, changing various factors such as bore, thickness and material of the tube which was used for extracorporeal circuit, and hematocrit and temperature of blood. The results were satisfactory.