Effect of cardiac resynchronization therapy on diastolic dysfunction as assessed by transthoracic two-dimensional Doppler echocardiography.
Cardiac resynchronization therapy (CRT) in patients with left ventricular systolic dysfunction and electrical dyssynchrony has been shown to improve morbidity and mortality. Improvement in diastolic dysfunction may contribute to these results. In this retrospective study, the authors assessed the effect of CRT on the E/A ratio and mitral valve deceleration time, which are commonly utilized parameters of left ventricular diastolic function. In 13 patients (aged 62 +/- 11.3 years), the E/A ratio increased from 1.17 +/- 0.58 to 1.49 +/- 0.66 (p = nonsignificant) and the mitral valve deceleration time increased from 178.48+/-57.71 milliseconds to 227.70 +/- 76.18 milliseconds (p = 0.054) post-CRT. In patients without mitral regurgitation, there was a significant increase in E/A ratio, from 1.22 +/- 0.4 to 1.86 +/- 0.47 (p = 0.025), but no significant change in the mitral valve deceleration time post-CRT was observed. These data suggest improvement in diastolic dysfunction as assessed by routine two-dimensional echocardiography in patients who receive CRT devices.
Published In/Presented At
Kantharia, B. K., Joshi, H. P., & Dudda-Subramanya, R. (2006). Effect of cardiac resynchronization therapy on diastolic dysfunction as assessed by transthoracic two-dimensional Doppler echocardiography. Congestive heart failure (Greenwich, Conn.), 12(4), 192–195. https://doi.org/10.1111/j.1527-5299.2006.05262.x
Medicine and Health Sciences
Department of Medicine