Objective: To study the heart rate variability (HRV) and blood pressure variability (BPV) in patients with different grades of hypertension.

前言：目的：分析各级高血压患者心率变异性与血压变异性。

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Vascular endothelial function was evaluated by arterial augmentation index (AAI), and autonomic modulation was evaluated by heart rate variability (HRV) and blood pressure variability (BPV).

采用动脉增加指数（AAI）评价血管内皮功能，心率变异（HRV）及血压变异（BPV）评价自主神经调制。

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