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A single treadmill exercise test does not accurately quantitate claudication.

K A Harris1, G E Meads

  • 1St. Joseph's Health Centre, University of Western Ontario, London.

Canadian Journal of Surgery. Journal Canadien De Chirurgie
|November 1, 1987
PubMed
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A single treadmill exercise test may not accurately assess disability from intermittent claudication. Performing three tests is recommended for a reproducible evaluation of vascular occlusive disease and patient limitations.

Area of Science:

  • Vascular Medicine
  • Exercise Physiology
  • Diagnostic Testing

Background:

  • Vascular occlusive disease diagnosis relies on ankle-brachial pressure index (ABPI) changes after treadmill tests.
  • The reproducibility of ABPI and patient-reported disability from these tests is questioned.

Purpose of the Study:

  • To evaluate the reproducibility of treadmill exercise testing for assessing disability in patients with vascular occlusive disease.
  • To determine the optimal number of treadmill tests for a reliable assessment of intermittent claudication.

Main Methods:

  • Twenty-five patients with vascular occlusive disease underwent five serial treadmill exercise tests on the same day.
  • Ankle-brachial pressure index (ABPI) and time to claudication were recorded for each test.

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Main Results:

  • Significant increases in time to claudication and maximum walking time were observed by the third test compared to the first.
  • No significant differences were found in the ABPI fall across the five tests.
  • Most patients reached their maximum walking distance by the third test.

Conclusions:

  • A single treadmill exercise test is insufficient for accurately assessing disability in intermittent claudication.
  • Performing three treadmill tests is recommended to achieve a reproducible evaluation of patient disability.