Mohammed Mutar et al JMSCR Volume 4 Issue 11 November 2016 Page 14112 JMSCR Vol||04||Issue||11||Page 14112-14117||November 2016 Risk Factors and Angiographic Findings in Patients with LBBB Who Underwent Coronary Angiography in Duhok Heart Center Authors Mohammed Mutar 1 , Muayad A. Merza 1* , Haval A. Issa 1 , Sabre Kh. Shaikhow 1 1 Azadi Teaching Hospital, College of Medicine, University of Duhok, Duhok, Kurdistan, Iraq *Corresponding Author Muayad A. Merza (MD) Azadi Teaching Hospital, College of Medicine, University of Duhok, Duhok, Kurdistan, Iraq Email: muayad.merza@uod.ac ABSTRACT The objectives of this study were to determine presenting symptoms, risk factors, echocardiographic and angiographic findings in patients with Left bundle branch block (LBBB), who underwent coronary angiography in Duhok heart center. All patients with symptomatic complete LBBB who attended Duhok cardiac heart center from September 15, 2007 to September 1, 2009 were included. Demographic profile such as age and sex, presenting symptoms, risk factors, echocardiographic and coronary angiographic findings were studied. The study included 75 patients, 41 patients (54.7%) were males and 34 patients (45.3%) were females with a mean age of 56 years. Male patients with LBBB have more incidences of both abnormal coronary angiography (70.3%) and three vessels disease (70%) than female patients. In our study 57.4% of patients with LBBB had hypertension. Patients with 2 or more risk factors showed a higher percentage (47.7%) of having abnormal angiography. Based on echocardiography findings, WMA constitutes the major finding (24, 32%). In the patients with CAD, there were normal ejection fraction (EF) in 7 patients (26%) and depressed EF in 20 patients (74%). In conclusion, hypertension was a major risk factor for LBBB. left anterior descending artery (LAD) artery was the most common vessel disease. Males show an overall higher degree of affection than females in regards with three vessels disease. Patients who had 2 or more risk factors had a higher percentage of having abnormal angiography. Left ventricular EF was lower in LBBB patients who had CAD. Keywords: LBBB, Risk factor, Angiography. BACKGROUND Left bundle branch block (LBBB) usually appears in patients with underlying heart disease, although as many as 12 percent of patients with LBBB have no demonstrable disease. Even among these patients, LBBB is associated with a higher than normal risk of cardiovascular disease and all- cause mortality (1) . The Framingham study showed that the appearance of complete LBBB on a routine ECG was usually associated with underlying hypertension, coronary artery disease (CAD), or cardiomyopathy, conditions that, if not already clinically apparent, would subsequently evolve during follow up (2) . On the other hand LBBB can be the results of less common conditions that may www.jmscr.igmpublication.org Impact Factor 5.244 Index Copernicus Value: 83.27 ISSN (e)-2347-176x ISSN (p) 2455-0450 DOI: https://dx.doi.org/10.18535/jmscr/v4i11.96