Comparison of Echocardiographic Dyssynchrony Assessment by Tissue Velocity and Strain Imaging in Subjects With or Without Systolic Dysfunction and With or Without Left Bundle-Branch Block

Several echocardiographic dyssynchrony indexes have been proposed to identify responders to cardiac resynchronization therapy using tissue velocity and strain. The present study aimed to compare tissue velocity-derived and strain-derived dyssynchrony indexes in patients with or without systolic dysf...

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Bibliographic Details
Published in:Circulation (New York, N.Y.) N.Y.), 2008-05, Vol.117 (20), p.2617-2625
Main Authors: MIYAZAKI, Chinami, POWELL, Brian D, BRUCE, Charles J, ESPINOSA, Raul E, REDFIELD, Margaret M, MILLER, Fletcher A, HAYES, David L, CHA, Yong-Mei, OH, Jae K
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Blood and lymphatic vessels
Bundle-Branch Block
Cardiac Pacing, Artificial
Cardiology. Vascular system
Cardiovascular system
Diseases of the peripheral vessels. Diseases of the vena cava. Miscellaneous
Echocardiography - methods
Echocardiography - standards
Female
Heart Failure - diagnosis
Heart Failure - therapy
Humans
Investigative techniques, diagnostic techniques (general aspects)
Male
Medical sciences
Middle Aged
Patient Selection
Predictive Value of Tests
Prognosis
Radionuclide investigations
Severity of Illness Index
Systole
Ventricular Remodeling
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Summary:Several echocardiographic dyssynchrony indexes have been proposed to identify responders to cardiac resynchronization therapy using tissue velocity and strain. The present study aimed to compare tissue velocity-derived and strain-derived dyssynchrony indexes in patients with or without systolic dysfunction and left bundle-branch block. Tissue Doppler imaging was performed in 120 subjects divided into 4 groups: group 1 (n=40), normal subjects; group 2 (n=20), normal left ventricular ejection fraction and left bundle-branch block; group 3 (n=20), left ventricular ejection fraction
ISSN:0009-7322
1524-4539
DOI:10.1161/CIRCULATIONAHA.107.733675