本文采用超声心动图研究了心脏起搏前、后的血液动力学变化 ，以评价不同起搏方式的血液动力学效应。
To evaluate the hemodynamic effects of different pacing mode, we studied changes of hemodynamics before and after the cardiac pacing.
目的：评价静脉注射米力农对充血性心力衰竭患者的血液动力学效应及激素水平变化的影响，为米力农的临床应用提供理论依据。
Objective: to study clinical application of intravenous Milrinone in patients with congestive heart failure with special reference to hemodynamic effects and hormonal changes of domestic Milrinone.
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