健康成人桡动脉增强指数

Radial Augmentation Index in Healthy Subjects

目的观察我国健康成年人各年龄段桡动脉增强指数(AI)值与性别的关系以及随年龄的变化趋势。方法按照健康人标准筛选出正常健康成人2456名(男性1192名,女性1264名),年龄18～89(43.1±13.4)岁,采用科林HEM-9000AI检测仪用桡动脉张力测量法测量桡动脉波形。结果健康人群桡动脉AI均值为(74.2±15.0)%,女性的桡动脉AI均值(79.5±13.1)%明显高于男性[(68.6±14.9)%,P<0.01]。无论健康男女,桡动脉AI均与年龄呈正相关(男:r=0.526,女:r=0.545,P<0.01)。根据AI与年龄及性别的关系,本文得出不同年龄段男女桡动脉AI的正常参考值范围。结论健康成人桡动脉AI值受年龄和性别的影响,女性AI值高于男性,应按照不同年龄段建立男女各自的正常参考值。

Objective To study the relationship between gender, age and radial augmentation index（rAI）. Methods Two thousands four hundreds and fifty six healthy subjects were recruited [-1192 males and 1264 females, mean age （43.1± 13.4）years], radial arterial waveforms were obtained by radial tonometry Colin HEM- 9000AI. Results The average value of rAI in Chinese healthy subjects was （74.2 ± 15.0）%. Radial AI was significantly higher in women than that in men [-（79.5±13.1） % vs （68.6±14.9） %, P〈0. 01]. Radial AI was positively related to age in healthy men and women （men： r=0. 526, women： r=0. 545, P〈O. 01, respectively）. Conclusion rAI seemed to be related with age and gender in healthy subjects, with higher value in women, emphasizing normal value of rAI should be determined based on age range.