Antunes E, Galrinho A, Ferreira R, Catarino C, Serra J, de Oliveira M, da Silva N, Quininha J, Ferreira M, Rato J A
Department of Cardiology, Santa Marta Hospital, Lisbon, Portugal.
Rev Port Cardiol. 1992 Nov;11(11):923-6.
To evaluate the relation between premature ventricular complexes morphology and left ventricular myocardial systolic function in patients with proved coronary artery disease.
Department of Cardiology at General Hospital.
From 112 patients (pts) with proved coronary artery disease, thirty-three pts with premature ventricular complexes (PVC) detected during treadmill exercise stress test were selected. Two groups of pts were considered: group I-20 pts with regular contour or with a narrow notching (< 40 ms; type I PVC) and group II-13 patients with wide notching (> 40 ms; type II PVC). In each group the following parameters were studied: ejection fraction, QRS duration, duration of exercise, number of metabolic units and the prevalence of ventricular aneurysm and mitral regurgitation.
Statistical significant differences were found between group I and II concerning the mean ejection fraction (59.2% vs 48.6%; p < 0.05). The prevalence of ventricular aneurysm and mitral regurgitation was higher in patients with type II ventricular premature complexes (10% vs 30%).
Particular characteristics of premature ventricular complexes detected during treadmill exercise stress test, in patients with proved coronary artery disease, suggest the presence of left ventricular myocardial systolic dysfunction.
评估确诊为冠状动脉疾病患者的室性早搏形态与左心室心肌收缩功能之间的关系。
综合医院心内科。
从112例确诊为冠状动脉疾病的患者中，选取33例在平板运动负荷试验中检测到室性早搏（PVC）的患者。将患者分为两组：第一组20例，其室性早搏形态规则或有窄切迹（<40毫秒；I型PVC）；第二组13例，其室性早搏有宽切迹（>40毫秒；II型PVC）。对每组患者研究以下参数：射血分数、QRS时限、运动时长、代谢当量数量以及室壁瘤和二尖瓣反流的发生率。
在平均射血分数方面，第一组和第二组之间存在统计学显著差异（59.2%对48.6%；p<0.05）。II型室性早搏患者的室壁瘤和二尖瓣反流发生率更高（10%对30%）。
在确诊为冠状动脉疾病的患者中，平板运动负荷试验期间检测到的室性早搏的特定特征提示存在左心室心肌收缩功能障碍。
