Frequency of left ventricular dyssynchrony in patients with heart failure and a narrow QRS complex

• Published in: The American journal of cardiology Vol. 95; no. 1; pp. 140 - 142
• Main Authors: Bleeker, Gabe B., Schalij, Martin J., Molhoek, Sander G., Holman, Eduard R., Verwey, Harriette F., Steendijk, Paul, van der Wall, Ernst E., Bax, Jeroen J.
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 2005; Elsevier; Elsevier Limited
• Subjects: Arrhythmias, Cardiac - epidemiology; Arrhythmias, Cardiac - etiology; Biological and medical sciences; Cardiology; Cardiology. Vascular system; Electrocardiography; Female; Heart; Heart failure; Heart Failure - complications; Heart Failure - physiopathology; Heart failure, cardiogenic pulmonary edema, cardiac enlargement; Heart Ventricles - physiopathology; Humans; Incidence; Male; Medical sciences; Medical treatment; Middle Aged; Prospective Studies; Human; Heart failure; Heart disease; QRS interval; Cardiovascular disease; Frequency; Complexes; Left ventricle
• ISSN: 0002-9149; 1879-1913
• DOI: 10.1016/j.amjcard.2004.08.082

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.