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心肌细胞收缩力与心脏所受的负荷有关。心脏负荷加重是造成心功能不全的基本病因之一。我们用在体蟾蜍心脏灌流,观察改变前后对在体蟾蜍心输出量、心电图及ΔR 波的化。为了便于反映负荷改变的情况将负荷分级。连续测量5分钟心输出量求1分钟平均值、用 SJ——41多导生理仪记录Ⅱ、Ⅲ导联心电图。
Cardiomyocyte contractility and the heart suffered by the load. Increased cardiac stress is one of the basic causes of cardiac insufficiency. We used toad heart perfusion in vivo and observed changes in cardiac output, electrocardiogram and ΔR wave in vivo in toad. In order to reflect the changes in the load load rating. Continuous measurement of cardiac output for 5 minutes for 1 minute average, with SJ - 41 multi - channel physiology records Ⅱ, Ⅲ lead ECG.