食道调搏导致心绞痛发作时的多普勒左室舒张功能改变

Doppler Left Ventricular Performance Changes During Episode of Angina Pectoris Induced by Esophageal Pacing

为了探讨心绞痛发作时左室舒张功能的变化,本文采用脉冲多普勒超声心动图测定二尖瓣前向血流,观察高血压病和心绞痛患者各20例食道调搏前后的左室舒张功能,结果显示,在心率增至90次/分时,心绞痛组均诱发心绞痛,而高血压病组无心绞痛发作,且心绞痛组的左室舒张功能受损的程度明显大于高血压病组,从而提示:在心率相同的条件下,心绞痛发作时左室舒张功能受损的程度大于高血压病,而脉冲多普勒超声心动图可以较好地反映左室舒张功能的程度。

To determine the effect of anginal attack on left ventricular (LV) diastolic fun-ction, transmitral flow using pulsed Doppler echocardiography during anginal attackprovoked by transesophageal pacing in 20 patients with coronary artery disease(CAD) was analyzed. The control group consisted of 20 patients with hypertension.The result showed: angina was provoked when the heart rate was 90 beats/min in theanginal group, but not in the hypertensive group. Under the condition of the sameheart rate impairment of LV diastolic function was more marked in the anginal thanin hypertensive group. The grade of impairement of diastolic function might be ref-lected by Doppler method.