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. 2006 Dec;56(533):932-7.

Symptomatic peripheral arterial disease: the value of a validated questionnaire and a clinical decision rule

Bianca Lw Bendermacher  1 , Joep Aw Teijink, Edith M Willigendael, Marie-Louise Bartelink, Harry R Büller, Ron Jg Peters, Jelis Boiten, Machteld Langenberg, Martin H Prins
Affiliations

Symptomatic peripheral arterial disease: the value of a validated questionnaire and a clinical decision rule

Bianca Lw Bendermacher et al. Br J Gen Pract. 2006 Dec.

Abstract

Background: If a validated questionnaire, when applied to patients reporting with symptoms of intermittent claudication, could adequately discriminate between those with and without peripheral arterial disease, GPs could avoid the diagnostic measurement of the ankle brachial index.

Aim: To investigate the Edinburgh Claudication Questionnaire (ECQ) in general practice and to develop a clinical decision rule based on risk factors to enable GPs to easily assess the likelihood of peripheral arterial disease.

Design of study: An observational study.

Setting: General practice in The Netherlands.

Method: This observational study included patients of > or =55 years visiting their GP for symptoms suggestive of intermittent claudication or with one risk factor. The ECQ and the ankle brachial index were performed. The prevalence of peripheral arterial disease, defined as an ankle brachial index <0.9, was related to risk factors using logistic regression analyses, on which a clinical decision rule was developed and related to the presence of peripheral arterial disease.

Results: Of the 4790 included patients visiting their GP with symptoms suggestive of intermittent claudication, 4527 were eligible for analyses. The prevalence of peripheral arterial disease in this group was 48.3%. The sensitivity of the ECQ was only 56.2%. The prevalence of peripheral arterial disease in a clinical decision rule that included age, male sex, smoking, hypertension, hypercholesterolemia, and a positive ECQ, increased from 14% in the lowest to 76% in the highest category.

Conclusion: This study indicates that the ECQ alone has an inadequate diagnostic value in detecting patients with peripheral arterial disease. The ankle brachial index should be performed to diagnose peripheral arterial disease in patients with complaints suggestive of intermittent claudication, although our clinical decision rule could help to differentiate between extremely high and lower prevalence of peripheral arterial disease.

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