title: Frequency of left ventricular dyssynchrony in patients with heart failure and a narrow QRS complex.
abstract: Cardiac resynchronization therapy (CRT) is considered a major advance in the treatment of patients with heart failure. The presence of left ventricular (LV) dyssynchrony seems mandatory for a positive response to CRT. Currently, only patients with wide QRS complexes are considered for CRT, although patients with narrow QRS complexes may also have LV dyssynchrony. In the present study, the incidence of LV dyssynchrony was prospectively evaluated in 64 patients with heart failure and narrow QRS complexes using tissue Doppler imaging.
authors.affiliation: Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.
authors.forename: Gabe B
authors.initials: GB
authors.lastname: Bleeker
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Schalij
authors.forename: Sander G
authors.initials: SG
authors.lastname: Molhoek
authors.forename: Eduard R
authors.initials: ER
authors.lastname: Holman
authors.forename: Harriette F
authors.initials: HF
authors.lastname: Verwey
authors.forename: Paul
authors.initials: P
authors.lastname: Steendijk
authors.forename: Ernst E
authors.initials: EE
authors.lastname: van der Wall
authors.forename: Jeroen J
authors.initials: JJ
authors.lastname: Bax
mesh_terms: D001145:Arrhythmias, Cardiac / Q000453:epidemiology* / Q000209:etiology*; D004562:Electrocardiography; D005260:Female; D006333:Heart Failure / Q000150:complications* / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies