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目的探讨正常血压高限值者窦性心率震荡(heartrate turbulence,HRT)的特征及其临床意义。方法选择45例正常血压高限值者(正常血压高限值组)及39例健康志愿者(对照组),进行24h动态心电图检查,离线分别计算震荡初始(TO)及震荡斜率(TS)。结果正常血压高限值者TO较对照组明显升高(p<0.05),TS明显降低(p<0.05)。结论正常血压高限值者存在室早后窦性心律震荡减弱,提示患者的自主神经功能明显受损。
Objective To investigate the characteristics and clinical significance of heart rate turbulence (HRT) in patients with high normotension. Methods Forty-five patients with normal high blood pressure (normotensive group) and 39 healthy volunteers (control group) were enrolled in this study. 24h ambulatory electrocardiogram (ECG) was performed and initial TO and concussion slope (TS) were calculated offline. Results Compared with the control group, the TO of the normal high blood pressure group was significantly increased (p <0.05), TS was significantly decreased (p <0.05). CONCLUSIONS: The high normotensive patients had a decrease in sinus rhythm and turbulence in their ventricles, suggesting that their autonomic function was significantly impaired.