Author/Authors :
Sadeghpour، Anita نويسنده , , Alizadehasl، Azin نويسنده , , Alizadeh Diz، Abolfath نويسنده Cardiac Electrophysiology Research Center, Shaheed Rajaei Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, Ira , , Akbarzadeh، Mohammad Ali نويسنده Resident of Cardiology, Shahid Beheshti University, M.C., Tehran, Iran Akbarzadeh, Mohammad Ali , Rezaeian، Nahid نويسنده Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran , , Zeighami، Mahbubeh نويسنده Rajaie Cardiovascular Medical and Research Center, Iran University of Medical Sciences, Tehran, IR Iran , , Hashemi، Arash نويسنده Echocardiography Research Center, Rajaie Cardiovascular, Medical and Research Center, Iran University of Medical Sciences, Tehran, Iran. ,
Abstract :
Differentiating ischemic from nonischemic cardiomyopathy is important both prognostically and therapeutically, although it may be difficult clinically. We aimed to determine the diagnostic power of Cardiogoniometry (CGM) in the differentiation of the ischemic from the nonischemic etiology of left bundle branch block (LBBB). We studied 37 patients with LBBB on the electrocardiogram (ECG) and left ventricular ejection fraction (LVEF) < 30%. All of them underwent coronary angiography, and 33 patients were included. Eighteen patients were categorized as the ischemic cardiomyopathy group, and 15 patients with normal coronary angiography were assigned to the nonischemic cardiomyopathy group. Then, CGM parameters were studied and compared between the two groups. Both ischemic and nonischemic cardiomyopathy groups were similar in age, LVEF, weight, height, and body mass index. Interestingly, there were no significant differences in the average value of the 40 CGM parameters that were analyzed in this study between the two study groups. When LBBB is the underlying rhythm, CGM cannot differentiate ischemic from nonischemic patients with good accuracy. Large studies, however, are needed to confirm our results.
