不同频率右心室心脏起搏的血液动力学观察及预后

对17例缓慢性心律失常患者作不同频率右心室起搏,观察心排血量,心排血指数及主肺动脉压力的变化,发现80次/min起搏时血液动力学效应最佳。指出这种方法对选择适宜频率起搏是有益的。患者基础频率越低,心脏阻滞部位越重,预后亦越差(p<0.05)。

Hemodynamic Observation and Prognosis of Pacing of Right Ventricle with Various Frequencis

17 cases with bradycardia were paced in right ventricle and cardiac output, cardiac index and malor pulmonary arterial pressure were investig- ated. It was found that the hemodynamic effect was satisfactory with the pacing being 80 per minute, and this approach proved useful for the selec- tion of optimal pacing frequeicies. We conclude that the slower the heart rate and the lower the position of heart block are, the worse will be the prognosis(p<0.05).