Abstract:
BACKGROUND:Obesity may increase heart failure risk through cardiac remodeling. Cross-sectional associations between adiposity and cardiac structure and function have been elucidated, but the impact of longitudinal changes in adiposity on cardiac remodeling is less well understood. METHODS AND RESULTS:Participants in the Dallas Heart Study without cardiovascular disease or left ventricular dysfunction underwent assessment of body weight, anthropometrics, and cardiac magnetic resonance imaging at baseline and 7 years later. Associations between changes in indices of generalized and central adiposity with changes in left ventricular mass, volume, mass/volume ratio (concentricity), wall thickness, and ejection fraction were assessed using multivariable linear regression. The study cohort (n=1262) mean age was 44 years with 57% women, 44% black, and 36% obese participants. At follow-up, 41% had ≥5% weight gain, and 15% had ≥5% weight loss. Greater weight gain was associated with younger age, lower risk factor burden, and lower body mass index at baseline. In multivariable models adjusting for age, sex, race, comorbid conditions at baseline and follow-up, baseline adiposity, and cardiac measurement, increasing weight was associated with increases in left ventricular mass (β=0.10, P<0.0001), wall thickness (β=0.10, P<0.0001), and concentricity (β=0.06, P=0.002), with modest effects on end-diastolic volume (β=0.04, P=0.044) and ejection fraction (β=0.05, P=0.046). Similar results were seen with other adiposity indices. CONCLUSIONS:Concentric left ventricular remodeling is the predominant phenotype linked to increasing adiposity in middle age. Our findings support the importance of weight management to prevent secular changes in adiposity, concentric remodeling, and eventual heart failure over time.
journal_name
J Am Heart Assocjournal_title
Journal of the American Heart Associationauthors
Wilner B,Garg S,Ayers CR,Maroules CD,McColl R,Matulevicius SA,de Lemos JA,Drazner MH,Peshock R,Neeland IJdoi
10.1161/JAHA.117.005897subject
Has Abstractpub_date
2017-07-19 00:00:00issue
7issn
2047-9980pii
JAHA.117.005897journal_volume
6pub_type
杂志文章abstract:BACKGROUND:Ethnicity is an important predictor of coronary artery bypass graft surgery (CABG) outcomes. South Asians (SA), one of the largest ethnic groups with a high burden of cardiovascular disease, are hypothesized to have inferior outcomes after CABG compared to other ethnic groups. Given the paucity and controver...
journal_title:Journal of the American Heart Association
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doi:10.1161/JAHA.116.003941
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journal_title:Journal of the American Heart Association
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journal_title:Journal of the American Heart Association
pub_type: 杂志文章
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pub_type: 杂志文章
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journal_title:Journal of the American Heart Association
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journal_title:Journal of the American Heart Association
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