老年人体重指数与脉压的关系

Relationship between BMI and PP in the aged

目的:研究老年人体重指数与脉压的关系。方法:采用整群抽样调查方法。调查1222老年人的血压与体重指数(BMI)。分为超重(BMI≥25kg/m2)非超重(BMI<25kg/m2)两组来观察收缩压(SBP)、舒张压(DBP)、平均压(MBP)、脉压(PP)变化。再把体重指数按BMI<20、BMI20～22.49、MI22.5～24.99、BMI25～27.49、BMI27.5～29.99、BMI>30kg/m2来观察SBP、DBP、MBP、PP以及AGE的变化。结果:超重与非超重者SBP、DBP、MBP、PP差异均有显著性。随着体重指数的增加,收缩压、舒张压均逐渐增加,在老年人中舒张压的增幅要比收缩压小,故脉压增幅逐渐增大,也是呈现连续性的过程,而与年龄无关。结论:老年人脉压高低与体重指数大小有关联。保持适当的低体重指数不仅对控制血压有利,而且对预防血管硬化也有利。

Objective: To study the relationship between body mass index (BMI) and pulse pressure (PP) in the aged people. Methods: 1222 aged were included and divided into two groups according to the BMI value: overweight group(BMI≥25 kg/m 2 ) and non-overweight group (BMI<25 kg/m 2 ). Systolic blood pressure (SBP), diastolic blood pressure (DBP), mean blood pressure (MBP) and PP were measured and calculated in 2 groups. Furthermore, change of SBP, DBP, MBP, PP were observed in 6 groups according to more detailed BMI classification: BMI<20, BMI 20～22.49, BMI 22.5～24.99, BMI 25～27.49, BMI 27.5～29.99 and BMI>30 kg/m 2 . Results: SBP, DBP, MBP, PP were significantly different between overweight and non-overweight group. With the increase of BMI, SBP and DBP also increased gradually. In the aged people, range of DBP increase was smaller than that of SBP, so PP increased in a continuous process and this was also not related with AGE. Conclusion: In the aged people, PP is positively related with BMI. To keep appropriately low BMI is beneficial in blood pressure control and in the prevention of blood vessel sclerosis.