不同房室延迟对左心室舒张功能及舒张期二尖瓣反流发生率的影响。
The influence of different AV delays on left ventricular diastolic functions and on incidence of diastolic mitral regurgitation.
作者信息
Postaci N, Yeşil M, Susam I, Bayata S
机构信息
Cardiology Department, Izmir State Hospital, Turkey.
出版信息
Angiology. 1996 Sep;47(9):895-9. doi: 10.1177/000331979604700908.
In patients with a DDD pacemaker (PM), programming of atrioventricular (AV) delay can influence ventricular filling and function. In this study the authors used color Doppler echocardiography to evaluate the effect of different AV delays on left ventricular diastolic function (LVDF) and on the incidence of diastolic mitral regurgitation. In 26 patients with DDD PM, the following parameters were evaluated during five different AV delays by echocardiography: (1) mitral E wave amplitude (by pulsed Doppler), (2) mitral A wave amplitude (by pulsed Doppler), (3) isovolumetric relaxation time (IVRT), (4) deceleration time (DT), (5) LV diastolic dimension (LVDd), (6) LV systolic dimension (LVDs), (7) ejection fraction (EF), and (8) diastolic mitral regurgitation (DMR). Patients had been paced for symptomatic AV block (n: 16, 62%) and sick sinus syndrome (n: 10, 38%). Mean age of patients was fifty-two (nineteen to sixty-three) and 13 (50%) of them were women.
在植入双腔起搏器（PM）的患者中，房室（AV）延迟的程控可影响心室充盈和功能。在本研究中，作者使用彩色多普勒超声心动图评估不同AV延迟对左心室舒张功能（LVDF）及舒张期二尖瓣反流发生率的影响。对26例植入双腔PM的患者，通过超声心动图在五种不同的AV延迟情况下评估以下参数：（1）二尖瓣E波幅度（脉冲多普勒测量），（2）二尖瓣A波幅度（脉冲多普勒测量），（3）等容舒张时间（IVRT），（4）减速时间（DT），（5）左心室舒张内径（LVDd），（6）左心室收缩内径（LVDs），（7）射血分数（EF），以及（8）舒张期二尖瓣反流（DMR）。患者因症状性房室传导阻滞（n = 16，62%）和病态窦房结综合征（n = 10，38%）而植入起搏器。患者的平均年龄为52岁（19至63岁），其中13例（50%）为女性。
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