Tissue Doppler imaging allows assessment of systolic and diastolic regional ventricular function. The aim of this study was to assess early changes in regional systolic and diastolic functions and differences in transition time to contraction between the ventricles after cardiac resynchronization therapy. Fourteen patients were included, who underwent echocardiography before and 1 month after resynchronization. The difference between transition time to contraction of left and right ventricles decreased to 24.4 +/- 10.7 milliseconds from 65.3 +/- 18.2 milliseconds after resynchronization therapy (P = .001). There was a significant relation between the decrease in difference between transition time and increase in ejection fraction (r = 0.80, P = .002). Early or late diastolic myocardial motion increased in 7 segments of left and 2 segments of right ventricles. Systolic myocardial motion increased in 7 segments of left and in all segments of right ventricles. Resynchronization therapy improved systolic and diastolic functions in both ventricles. The difference between transition time to contraction of ventricles might be helpful in estimating optimal resynchronization.

译文

:组织多普勒成像可评估收缩和舒张区域心室功能。这项研究的目的是评估心脏再同步治疗后区域收缩和舒张功能的早期变化以及心室之间收缩过渡时间的差异。包括十四名患者,他们在再同步之前和之后1个月接受了超声心动图检查。左心室和右心室收缩之间的过渡时间之间的差异从再同步治疗后的65.3 /-18.2毫秒降低到24.4 /-10.7毫秒(P = .001)。过渡时间之间的差异减少与射血分数增加之间存在显着关系(r = 0.80,P = .002)。舒张早期或晚期心肌运动在左心室的7个部分和右心室的2个部分中增加。在左心室的7个节段和右心室的所有节段中,收缩期心肌运动均增加。重新同步治疗改善了两个心室的收缩和舒张功能。过渡时间到心室收缩之间的差异可能有助于估计最佳的再同步。

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