Mất đồng bộ trong thất trái ở bệnh nhân tăng huyết áp có phì đại thất trái bằng siêu âm Doppler mô

Objective: To study the possible presence of cardiac dyssynchrony in hypertension patients with left ventricular hypertrophy and without left ventricular hypertrophy. Methods: 202 subjects studied by echocardiography with tissue Doppler imaging was split into 2 groups: Group 1 including 75 hypertension patients with left ventricular hypertrophy and group 2 including 127 in hypertension patients without left ventricular hypertrophy. Severity and prevalence of myocardial dyssynchrony were assessed by using doppler and 1VI. Intraventricular mechanical dyssynchronydelay main index as follows: Time to peak systolic velocity of oppossing wall delay, Two site (ATs); Maximal difference in time to peak systolic velocity (Ts-Maxx), and the standard deviation of TS (Ts-SD) of the 12 LV segments, maximal difference in time to peak dyastolic velocity (Te-Maxx), and the standard deviation of Te (Te-SD) of the 12 LV segments. Results: Conclusions: The time interval systolic difference between two segments walls was seen higher in group 1 than in group 2 (p0.05). intraventricular dyssynchrony in group 1 by Ts Max and Ts-50; Te-Max and Te-50 was higher in group 2 (p0.05). The prevalance of systolic and diastolic intraventricular dyssynchrony was seen higher in group 1 than in group 2 (48,4 percent vs 24,6 percent and 32 percentvs 21,3 percent, p0.05).