Left ventricular hypertrophy is more prevalent in blacks than whites in the general population - The Dallas Heart Study

被引:256
作者
Drazner, MH
Dries, DL
Peshock, RM
Cooper, RS
Klassen, C
Kazi, F
Willett, D
Victor, RG
机构
[1] Univ Texas, SW Med Ctr, Heart Failure Res Unit, Dallas, TX 75390 USA
[2] Univ Texas, SW Med Ctr, Donald W Reynolds Cardiovasc Clin Res Ctr, Dallas, TX 75390 USA
[3] Univ Texas, SW Med Ctr, Dept Internal Med, Div Cardiol, Dallas, TX 75390 USA
[4] Univ Texas, SW Med Ctr, Dept Internal Med, Div Hypertens, Dallas, TX 75390 USA
[5] Loyola Univ, Dept Prevent Med & Epidemiol, Maywood, IL 60153 USA
关键词
hypertrophy; ethnic groups; epidemiology; obesity;
D O I
10.1161/01.HYP.0000169972.96201.8e
中图分类号
R6 [外科学];
学科分类号
1002 ; 100210 ;
摘要
Although recent studies have suggested that blacks compared with whites have an increased prevalence of left ventricular hypertrophy, it remains uncertain whether this is true despite adjustment for body composition ( fat mass and fat-free mass) and when assessed by cardiac MRI in the general population. The Dallas Heart Study is a population-based study of Dallas County in which 1335 black and 858 white participants 30 to 67 years of age underwent detailed assessment including dual-energy x-ray absorptiometry scan to measure body composition and cardiac MRI. Left ventricular hypertrophy, whether defined by indexation to body surface area ( P < 0.001), fat-free mass ( P = 0.002), or height(2.7) ( P < 0.001) was 2- to 3-fold more common in black versus white women. Similar results were seen when comparing black and white men ( P < 0.001 when left ventricular hypertrophy was indexed to body surface area or height(2.7) and P = 0.05 when indexed to fat-free mass). Ethnic disparities in left ventricular mass persisted in multivariable models despite adjustment for fat mass, fat-free mass, systolic blood pressure, age, gender, and measures of socioeconomic status. We conclude that blacks compared with whites have increased left ventricular mass and a 2- to 3-fold higher prevalence of left ventricular hypertrophy in the general population, as assessed by cardiac MRI. The ethnic differences in left ventricular mass are independent of differences in body composition.
引用
收藏
页码:124 / 129
页数:6
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