Relationship of Fragmented Wide QRS Complexes with Coronary Atherosclerosis in Patients with Left Bundle Branch Block

Abstract

Objectıve: The non-invasive tests used in the diagnosis of Coronary Artery Disease (CAD) in patients with Left Bundle Branch Block (LBBB) are of limited use. The aim of this study is to investigate the relationship between the presence of Fragmented wide QRS [f-wQRS] and coronary atherosclerosis in patients with LBBB.Methods: This retrospective study included 75 patients who were admitted to our clinic with exertional chest pain and LBBB on electrocardiography and for whom it was decided to obtain coronary angiography as a result of clinical evaluation or positive scintigraphic results. The presence of f-wQRS was investigated in patients' electrocardiography prior to coronary angiography. Gensini score was calculated by examining the patients' coronary angiography records. Patient who had 75% and more stenosis in at least one coronary artery was defined as an obstructive CAD.