Objective To investigate the effect of nitric acid ester on pulse pressure(PP) in elderly patients with isolated systolic hypertension(ISH).
目的观察硝酸酯类药物对老年单纯收缩期高血压（ISH）患者脉压（PP）的影响。
Objective To investigate the effect of nitric acid ester on pulse pressure(PP) in elderly patients with isolated systolic hypertension(ISH).
目的观察硝酸酯类药物对老年单纯收缩期高血压（ISH）患者脉压（PP）的影响。
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