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| Evaluation of the left ventricular diastolic synchrony in patients with congestive heart failure using tissue Doppler imaging |
| MA Chun-yan, REN Wei-dong, TANG Li, CHEN Xin, LI Nan, ZHANG Li-min, WANG Xiao-bing |
| Department of Cardiovascular Function, First Hospital, China Medical University, Shenyang 110001, China |
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Abstract Objective: To evaluate left ventricular(LV) diastolic synchrony in patients with congestive heart failure(CHF) using tissue Doppler imaging(TDI). Methods: The TDI examination was performed in 74 patients with CHF, and 62 controls. The maximal difference(Dif) and standard deviation(SD) of the time to the peak early diastolic relaxation(TE-Dif and TE-SD) were measured. And the ratio of the early trans-mitral flow velocity and the early diastolic velocity of mitral valve annulus(E/E’) were assessed as diastolic function index. Results: The TE-Dif and TE-SD were significantly longer, and E/E’ was larger in patients with CHF than in controls. And a larger E/E’ was the independent predictor of diastolic synchrony. Conclusions: LV diastolic synchrony is common in patients with CHF. TDI is a useful and reliable technique for detecting diastolic synchrony.
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Received: 14 January 2008
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2008, Vol. 19 
