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目的:应用脉冲组织多普勒显像(TDI)评价原发性高血压(EH)患者的右室舒张功能。方法:53例Ⅰ~Ⅱ级EH患者(EH组)及50例健康志愿者(对照组)于三尖瓣环与二尖瓣环行脉冲TDI检查,测量舒张早期峰值运动速度(e)、舒张晚期峰值速度(a),计算e/a。对比2组右室舒张功能参数,分析右室舒张功能参数与其他因素的相关关系。结果:EH患者三尖瓣环e明显减低,e/a明显下降,右室等容舒张时间延长,右室舒张功能参数与左室舒张功能参数呈紧密正相关。结论:轻、中度EH患者存在右室舒张功能障碍,两侧心室充盈参数之间相关性良好。脉冲TDI用于评价EH患者右室舒张功能是可行的。
Objective: To evaluate the right ventricular diastolic function in patients with essential hypertension (EH) by pulsed tissue Doppler imaging (TDI). Methods Totally 53 patients with grade Ⅰ ~ Ⅱ EH (EH group) and 50 healthy volunteers (control group) underwent TDI examination of tricuspid annulus and mitral annulus to measure peak early diastolic velocity (e), late diastolic phase Peak speed (a), calculate e / a. The right ventricular diastolic function parameters of two groups were compared to analyze the correlation between right ventricular diastolic function parameters and other factors. Results: The tricuspid annulus e decreased significantly, the e / a decreased obviously and the RV relaxation time prolonged. The parameters of right ventricular diastolic function were positively correlated with the parameters of left ventricular diastolic function. CONCLUSIONS: Right and left ventricular diastolic dysfunction is present in mild and moderate EH patients and the correlation between ventricular filling parameters is good on both sides. Pulsed TDI for the evaluation of right ventricular diastolic function in patients with EH is feasible.