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Association of asymptomatic peripheral arterial disease with vascular events in patients with stroke or transient ischemic attack.

Abstract：

BACKGROUND AND PURPOSE:Patients with stroke and patients with transient ischemic attack (TIA) are at high risk for vascular events and may not exhibit the signs and symptoms of peripheral arterial disease (PAD). We investigated if asymptomatic PAD detected by ankle brachial index <0.9 is independently associated with recurrent vascular events in patients with stroke or TIA. METHODS:In this prospective longitudinal hospital-based cohort study, asymptomatic PAD was detected by ankle brachial index measurement in consecutive patients with stroke and patients with TIA. They were assessed for stroke risk factors, ankle brachial index measurement, and laboratory parameters known to be associated with stroke risk. These patients were followed for composite vascular events, including stroke, TIA, myocardial infarction, and vascular death. RESULTS:In a 1-year period, 102 patients were evaluated, of whom 26% had asymptomatic PAD. All patients were followed for a median period of 2.1 years from the index stroke/TIA (range, 1.0 to 2.7 years) for vascular events. Kaplan-Meier curve showed fewer patients with asymptomatic PAD remained free of composite vascular events (48% compared with 84% in the no-PAD group; log rank, P=0.0001). Asymptomatic PAD was significantly associated with composite vascular events before (hazard ratio, 4.2; 95% CI, 1.9 to 9.3; P=0.0003) and after adjustment for confounders (hazard ratio, from Model 1, 2.8; 95% CI, 1.1 to 7.2; P=0.03 and Model 2, 3.4; 95% CI, 1.4 to 8.2, P=0.006). Asymptomatic PAD was also significantly associated with stroke before (hazard ratio, 6.5; 95% CI, 2.1 to 19.9; P=0.001) and after adjustment for confounders (hazard ratio from Model 1, 4.8; 95% CI, 1.5 to 15.3; P=0.009 and Model 2, 5.2; 95% CI, 1.5 to 17.6; P=0.008). CONCLUSIONS:In patients with stroke or TIA, asymptomatic PAD is independently associated with recurrent vascular events and stroke.

journal_name

Stroke

journal_title

Stroke

authors

Sen S,Lynch DR Jr,Kaltsas E,Simmons J,Tan WA,Kim J,Beck J,Rosamond W

doi

10.1161/STROKEAHA.109.559278

subject

Has Abstract

pub_date

2009-11-01 00:00:00

pages

3472-7

issue

eissn

0039-2499

issn

1524-4628

pii

STROKEAHA.109.559278

journal_volume

pub_type

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Association of asymptomatic peripheral arterial disease with vascular events in patients with stroke or transient ischemic attack.