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Related Experiment Videos

Intermittent claudication: a condition with underrated risks.

J Dormandy1, L Heeck, S Vig

  • 1Department of Vascular Surgery, St George's Hospital Medical School, London, England, United Kingdom.

Seminars in Vascular Surgery
|April 25, 2000
PubMed
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Intermittent claudication (IC) diagnosis is challenging due to its subjective nature. The ankle-brachial pressure index (ABPI) is a sensitive and specific noninvasive test for detecting peripheral arterial occlusive disease (PAOD).

Area of Science:

  • Vascular Medicine
  • Diagnostic Imaging
  • Epidemiology

Background:

  • Intermittent claudication (IC) is a key symptom of peripheral arterial occlusive disease (PAOD).
  • Current diagnostic methods like questionnaires (WHO/Rose, Edinburgh) have low sensitivity, underestimating IC prevalence.
  • Clinical examination, including pulse palpation, offers improved sensitivity but lacks specificity compared to noninvasive tests.

Purpose of the Study:

  • To evaluate the diagnostic utility of the ankle-brachial pressure index (ABPI) for peripheral arterial occlusive disease (PAOD).
  • To compare the sensitivity and specificity of ABPI with traditional methods for diagnosing intermittent claudication (IC).

Main Methods:

  • Review of existing literature on diagnostic methods for IC and PAOD.

Related Experiment Videos

  • Analysis of the sensitivity and specificity of questionnaires, clinical examination (pulse palpation), and ABPI.
  • Inclusion of data on the prevalence and incidence of IC and asymptomatic PAOD.

    • Main Results:

    • A resting ankle-brachial pressure index (ABPI) of 0.9 or less is highly sensitive (up to 95%) and specific (nearly 100%) for detecting significant PAOD.
    • ABPI of 0.9 or less correlates with at least 50% vessel stenosis.
    • The prevalence of IC increases with age, affecting 3-6% of men aged 60+, while asymptomatic PAOD may affect up to 20% of adults.

    Conclusions:

    • The ankle-brachial pressure index (ABPI) is a superior noninvasive diagnostic tool for peripheral arterial occlusive disease (PAOD) compared to subjective questionnaires.
    • Accurate diagnosis of PAOD, both symptomatic (IC) and asymptomatic, is crucial due to its association with cardiovascular morbidity and mortality.
    • ABPI enables more reliable detection and assessment of PAOD, improving patient risk stratification.