Document Detail


Obesity paradox in patients with hypertension and coronary artery disease.
MedLine Citation:
PMID:  17904457     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: An obesity paradox, a "paradoxical" decrease in morbidity and mortality with increasing body mass index (BMI), has been shown in patients with heart failure and those undergoing percutaneous coronary intervention. However, whether this phenomenon exists in patients with hypertension and coronary artery disease is not known. METHODS: A total of 22,576 hypertensive patients with coronary artery disease (follow-up 61,835 patient years, mean age 66+/-9.8 years) were randomized to a verapamil-SR or atenolol strategy. Dose titration and additional drugs (trandolapril and/or hydrochlorothiazide) were added to achieve target blood pressure control according to the Sixth Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure targets. Patients were classified into 5 groups according to baseline BMI: less than 20 kg/m2 (thin), 20 to 25 kg/m2 (normal weight), 25 to 30 kg/m2 (overweight), 30 to 35 kg/m2 (class I obesity), and 35 kg/m2 or more (class II-III obesity). The primary outcome was first occurrence of death, nonfatal myocardial infarction, or nonfatal stroke. RESULTS: With patients of normal weight (BMI 20 to<25 kg/m2) as the reference group, the risk of primary outcome was lower in the overweight patients (adjusted hazard ratio [HR] 0.77, 95% confidence interval [CI], 0.70-0.86, P<.001), class I obese patients (adjusted HR 0.68, 95% CI, 0.59-0.78, P<.001), and class II to III obese patients (adjusted HR 0.76, 95% CI, 0.65-0.88, P <.001). Class I obese patients had the lowest rate of primary outcome and death despite having smaller blood pressure reduction compared with patients of normal weight at 24 months (-17.5+/-21.9 mm Hg/-9.8+/-12.4 mm Hg vs -20.7+/-23.1 mm Hg /-10.6+/-12.5 mm Hg, P<.001). CONCLUSION: In a population with hypertension and coronary artery disease, overweight and obese patients had a decreased risk of primary outcome compared with patients of normal weight, which was driven primarily by a decreased risk of all-cause mortality. Our results further suggest a protective effect of obesity in patients with known cardiovascular disease in concordance with data in patients with heart failure and those undergoing percutaneous coronary intervention.
Authors:
Seth Uretsky; Franz H Messerli; Sripal Bangalore; Annette Champion; Rhonda M Cooper-Dehoff; Qian Zhou; Carl J Pepine
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  The American journal of medicine     Volume:  120     ISSN:  1555-7162     ISO Abbreviation:  Am. J. Med.     Publication Date:  2007 Oct 
Date Detail:
Created Date:  2007-10-01     Completed Date:  2007-10-30     Revised Date:  2008-07-29    
Medline Journal Info:
Nlm Unique ID:  0267200     Medline TA:  Am J Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  863-70     Citation Subset:  AIM; IM    
Affiliation:
Division of Cardiology, St Luke's-Roosevelt Hospital, New York, NY, USA.
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MeSH Terms
Descriptor/Qualifier:
Age Distribution
Aged
Antihypertensive Agents / therapeutic use
Atenolol / therapeutic use
Body Mass Index
Causality
Cohort Studies
Comorbidity
Coronary Artery Disease / drug therapy,  epidemiology*
Female
Humans
Hypertension / drug therapy,  epidemiology*
Male
Middle Aged
Multivariate Analysis
Obesity / classification,  epidemiology*
Outcome and Process Assessment (Health Care)
Risk Factors
Sex Distribution
Survival Analysis
United States / epidemiology
Vasodilator Agents / therapeutic use
Verapamil / therapeutic use
Chemical
Reg. No./Substance:
0/Antihypertensive Agents; 0/Vasodilator Agents; 29122-68-7/Atenolol; 52-53-9/Verapamil
Comments/Corrections
Comment In:
Am J Med. 2007 Oct;120(10):825-6   [PMID:  17904447 ]
Am J Med. 2008 May;121(5):e13   [PMID:  18456013 ]
Am J Med. 2008 May;121(5):e11   [PMID:  18456012 ]
Am J Med. 2008 Jul;121(7):e7; author reply e9   [PMID:  18589044 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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