Frequency of left ventricular dyssynchrony in patients with heart failure and a narrow QRS complex.
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.
Bleeker
Gabe B
GB
Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands.
Schalij
Martin J
MJ
Molhoek
Sander G
SG
Holman
Eduard R
ER
Verwey
Harriette F
HF
Steendijk
Paul
P
van der Wall
Ernst E
EE
Bax
Jeroen J
JJ
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