Regional correlation by color-coded tissue Doppler to quantify improvements in mechanical left ventricular synchrony after biventricular pacing therapy - 28/08/11
Abstract |
Cardiac resynchronization therapy (CRT) can improve cardiac function in patients with heart failure and left bundle branch block. To test a new synchrony index derived from mitral annular velocity by color tissue Doppler, 19 subjects were studied: 9 patients with heart failure and left bundle branch block at baseline and at 1, 3 and 6 months after CRT and 10 normal controls. The synchrony index in patients with heart failure was less than that in controls at baseline (r = 0.60 ± 0.13 vs 0.94 ± 0.02; p <0.01), but improved at 6 months after CRT (r = 0.77 ± 0.09; p <0.05 vs baseline).
Le texte complet de cet article est disponible en PDF. | Dr. Gorcsan was supported in part by award K24 HL04503-01 from the National Institutes of Health, Bethesda, Maryland and a National Grant-in-Aid ( no. 0050587N) from the American Heart Association, Chicago, Illinois. |
Vol 92 - N° 6
P. 752-755 - septembre 2003 Retour au numéro
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