组织多普勒成像评价充血性心衰患者左室舒张同步性

目的：应用组织多普勒成像（TDI）评价充血性心衰（CHF）患者的左室舒张同步性。方法：74例CHF患者和62例正常人进行TDI检查,检测左室12节段心肌舒张早期达峰时间的最大差值和标准差（TE-Dif和TE-SD）,代表舒张同步性;以舒张早期二尖瓣频谱峰值与二尖瓣环速度峰值之比（E/E’）代表舒张功能。结果：CHF患者TE-Dif和TE-SD显著延长,E/E’增大。增大的E/E’是TE-Dif和TE-SD的独立预测因子。结论：CHF常合并左室舒张不同步,且与舒张功能减低关系密切。TDI能够准确评价舒张同步性。

Evaluation of the left ventricular diastolic synchrony in patients with congestive heart failure using tissue Doppler imaging

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.