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Ankle-brachial index: more than a diagnostic test?
Ludwig Cáceres-Farfán1, Milagros Moreno-Loaiza1, W Samir Cubas1
1Service of Vascular and Endovascular Surgery, Department of Thoracic and Cardiovascular Surgery, Edgardo Rebagliati Martins National Hospital, Lima, Peru. Service of Vascular and Endovascular Surgery Department of Thoracic and Cardiovascular Surgery Edgardo Rebagliati Martins National Hospital Lima Peru.
The ankle-brachial index (ABI) is a valuable diagnostic tool for peripheral artery disease (PAD). A low or high ABI also predicts significant cardiovascular events and mortality.
Area of Science:
- Vascular Medicine
- Cardiology
- Diagnostic Testing
Background:
- The ankle-brachial index (ABI) measures blood pressure in the ankles relative to the arms.
- Pathological ABI values (<0.90 or >1.40) are indicative of peripheral artery disease (PAD).
- PAD diagnosis is crucial due to its association with increased cardiovascular morbidity and mortality.
Purpose of the Study:
- To review current evidence on the diagnostic utility of ABI for PAD.
- To highlight ABI's role as a predictor of cardiovascular morbidity and mortality.
Main Methods:
- Literature review of studies evaluating the ankle-brachial index.
- Analysis of ABI's correlation with PAD diagnosis and cardiovascular outcomes.
Main Results:
- ABI is a highly useful, cost-effective, and reproducible test for diagnosing PAD.
- A low ABI is a confirmed predictor of major cardiovascular events, including those related to diabetes, coronary disease, and stroke.
Conclusions:
- The ankle-brachial index is essential for PAD diagnosis.
- ABI serves as a critical prognostic marker for cardiovascular disease and mortality.
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01:21Sites for measruring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
01:23Assessment of blood pressure in brachial artery(two-step method)
01:10Pre-Procedural Guidelines for Assessing Blood Pressure
01:28Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.