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Association of obesity and metabolic syndrome with the severity and outcome of intermittent claudication.

Abstract：

BACKGROUND:Obesity is recognized as an independent predictor of coronary artery disease; however, its importance in peripheral arterial disease is less clear. The aim of this study was to assess the association between obesity and the severity and outcome of intermittent claudication. METHODS:This study was a prospective cohort study based at a tertiary referral center. Sixty patients with intermittent claudication selected for conservative treatment were assessed for obesity and metabolic syndrome by using the International Diabetes Federation definition. Other risk factors, including diabetes, hypertension, smoking history, serum lipids, adipocytokines, and C-reactive protein, were measured by clinical and blood assessment. Obesity and metabolic syndrome were related to the severity of peripheral arterial disease, defined by ankle-brachial pressure index and graded treadmill measured maximum walking distance (MWD) and initial claudication distance, by using multiple linear regression analysis allowing for traditional atherosclerotic risk factors. Patients were followed up for 24 months, and combined outcome was reported in terms of death, cardiovascular events, or requirement for revascularization. The effect of obesity and metabolic syndrome on outcome was investigated by using Kaplan-Meier and Cox proportional hazard analysis. RESULTS:Obesity and serum adiponectin were independently associated with the severity of peripheral arterial disease measured by ankle-brachial pressure index (P = .03 and .001), initial claudication distance (P = .009 and .03), and MWD (P = .001 and .04). Metabolic syndrome was independently associated only with MWD (P = .02). By 24 months, outcome events occurred in 37% +/- 7% and 43% +/- 9% of patients with metabolic syndrome or obesity, respectively, compared with 0% and 11% +/- 6% of those without these diagnoses. Waist circumference independently predicted the likelihood of outcome events (relative risk, 1.16; 95% confidence interval, 1.08-1.26; P < .001). CONCLUSIONS:These findings, if confirmed in other cohorts, suggest the importance of treating obesity in patients with intermittent claudication. Serum adiponectin concentrations may be an important guide to the efficacy of treatment in patients with intermittent claudication and obesity.

journal_name

J Vasc Surg

journal_title

Journal of vascular surgery

authors

Golledge J,Leicht A,Crowther RG,Clancy P,Spinks WL,Quigley F

doi

10.1016/j.jvs.2006.09.006

subject

Has Abstract

pub_date

2007-01-01 00:00:00

pages

40-6

issue

eissn

0741-5214

issn

1097-6809

pii

S0741-5214(06)01630-2

journal_volume

pub_type

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Association of obesity and metabolic syndrome with the severity and outcome of intermittent claudication.