Experiments were performed on 15 anaesthetized dogs, mean arterial pressure, left intraventricular pressure, dp/dt max, -dp/dt max and the area of cardiac force loop ( CFL ) were reduced markedly by intravenous infusion of sodium nitroprusside ( NP) .

• 实验在麻醉狗中进行。 静脉内匀速注射硝普钠时,平均动脉压和左心室收缩压明显降低,左心室dp/dt_(max)、-dp/dt_(max)和心力环面积均明显减小。