Diastolic blood pressure is an important determinant of augmentation index and pulse wave velocity in young, healthy males

被引:101
作者
Nürnberger, J
Dammer, S
Saez, AO
Philipp, T
Schäfers, RF
机构
[1] Univ Essen Gesamthsch, Div Nephrol, Sch Med, Dept Nephrol, D-45122 Essen, Germany
[2] Indiana Univ, Sch Med, Dept Cellular & Integrat Physiol, Indianapolis, IN USA
关键词
augmentation index; pulse wave velocity; diastolic blood pressure; arterial stiffness;
D O I
10.1038/sj.jhh.1001526
中图分类号
R6 [外科学];
学科分类号
1002 ; 100210 ;
摘要
Pulse wave velocity (PWV) and augmentation index are widely used measures of arterial stiffness. The purpose of this study was to evaluate the role of blood pressure as a determinant of both indices independent of potentially confounding factors including gender, age and cardiovascular disorders. A total of 77 young, healthy subjects were investigated under resting conditions. Augmentation index was derived by pulse wave analysis using carotid applanation tonometry. PWV was determined from pressure tracing over the carotid and femoral artery. The relations between stiffness markers and haemodynamic parameters were analysed by simple (r) and multiple (beta) regression analysis. Using simple regression analysis, augmentation index was correlated to age (r=0.292, P=0.0105), diastolic blood pressure (DBP, r=0.483, P<0.0001), mean arterial blood pressure (MAP, r=0.381, P=0.0007), pulse pressure (r=-0.414, P=0.0002) and total peripheral resistance (r=0.266, P=0.0204). After multiple regression analysis, augmentation index remained significantly correlated only to DBP (β=0.347, P=0.0051). Using simple regression analysis, PWV was correlated to age (r=0.304, P=0.0067), systolic blood pressure (r=0.280, P=0.0129). DBP (r=0.455, P<0.0001), MAP (r=0.446, P<0.0001) and heart rate (r=0.348, P=0.0018). After multiple regression analysis, PWV remained correlated only to age (β=0.218, P=0.0422) and DBP (β=0.4105, P=0.0316). In summary, DBP is an important determinant of augmentation index and PWV in young, healthy males. Further studies are needed to characterize the impact of blood pressure on arterial stiffness in other populations including females and older subjects.
引用
收藏
页码:153 / 158
页数:6
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