title: Presence and extent of angiographic coronary narrowing in patients with left bundle branch block.
abstract: Patients with coronary artery disease (CAD) and concomitant left bundle branch block have increased mortality compared with those with CAD but without left bundle branch block. We retrospectively analyzed the extent of CAD in 200 patients with left bundle branch block referred for coronary angiography. Only 13% had left main or 3-vessel CAD. These findings were irrespective of left ventricular (LV) function. Of the 65 patients with normal LV function, only 5 (8%) had left main or 3-vessel disease, and of the 135 patients with depressed LV function, only 21 (16%) had left main or 3-vessel disease.
authors.affiliation: Department of Internal Medicine, Division of Cardiology, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390-8837, USA.
authors.forename: Keith
authors.initials: K
authors.lastname: Nguyen
authors.forename: Joaquin E
authors.initials: JE
authors.lastname: Cigarroa
authors.forename: Richard A
authors.initials: RA
authors.lastname: Lange
authors.forename: L David
authors.initials: LD
authors.lastname: Hillis
authors.forename: Ellen C
authors.initials: EC
authors.lastname: Keeley
mesh_terms: D002037:Bundle-Branch Block / Q000150:complications*; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D016277:Ventricular Function, Left