title: How many patients with dilated cardiomyopathy may potentially benefit from cardiac resynchronization therapy?
abstract: The clinical and electrocardiographic Marburg Cardiomyopathy database was analyzed to identify potential candidates for cardiac resynchronization therapy (CRT) with biventricular or left ventricular pacing among 566 patients with dilated cardiomyopathy (DCM). All of the following restrictive selection criteria were fulfilled by 38 patients (7%): NYHA functional class > or = 3 (n = 193, 34%), left ventricular ejection fraction (LVEF) < 30% (n = 238, 42%), sinus rhythm (n = 437, 77%), left bundle branch block (LBBB, n = 142, 25%), and QRS duration > or = 150 ms (n = 136, 24%). In 78 of the 566 patients (14%) all of the following less restrictive selection criteria were fulfilled: NYHA functional class > or = 3 (n = 193, 34%), LVEF < 35% in presence of any underlying rhythm (n = 326, 58%), QRS duration > or = 120 ms with right or left bundle branch block (n = 223, 39%). Thus, between 7% and 14% of patients with DCM were candidates for CRT depending on the application of strict versus less restrictive selection criteria.
authors.affiliation: Department of Cardiology, Hospital of the Philipps-University of Marburg, Baldingerstrasse, 35033 Marburg, Germany. Wolfram.Grimm@med.uni-marburg.de
authors.forename: Wolfram
authors.initials: W
authors.lastname: Grimm
authors.forename: Julia
authors.initials: J
authors.lastname: Sharkova
authors.forename: Reinhard
authors.initials: R
authors.lastname: Funck
authors.forename: Bernhard
authors.initials: B
authors.lastname: Maisch
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000150:complications / Q000628:therapy; D002304:Cardiac Pacing, Artificial / Q000379:methods; D002311:Cardiomyopathy, Dilated / Q000150:complications / Q000503:physiopathology / Q000628:therapy*; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013318:Stroke Volume