Photoplethysmography, an Easy and Accurate Method for Measuring Ankle Brachial Pressure Index: Can Photoplethysmography Replace Doppler?

Objective: To assess the accuracy of ankle brachial pressure index (ABPI) assessed by photoplethysmography (PPG) compared with continuous wave Doppler (CW-Doppler). Methods: Ankle brachial pressure index was measured in a standard manner using both PPG and Doppler probes. For PPG-ABPI, a PPG probe w...

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Bibliographic Details
Published in:Vascular and endovascular surgery 2009-12, Vol.43 (6), p.578-582
Main Authors: Khandanpour, Nader, Armon, Matthew P., Jennings, Barbara, Clark, Allan, Meyer, Felicity J.
Format: Article
Language:English
Subjects:
Aged
Ankle - blood supply
Biological and medical sciences
Blood Pressure
Blood Pressure Determination - instrumentation
Blood Pressure Determination - methods
Brachial Artery - diagnostic imaging
Brachial Artery - physiopathology
Female
Hormones. Endocrine system
Humans
Intermittent Claudication - diagnosis
Intermittent Claudication - diagnostic imaging
Intermittent Claudication - physiopathology
Male
Medical sciences
Microcomputers
Middle Aged
Pharmacology. Drug treatments
Photoplethysmography - instrumentation
Predictive Value of Tests
Reproducibility of Results
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
Ultrasonography, Doppler
Vascular surgery: aorta, extremities, vena cava. Surgery of the lymphatic vessels
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Summary:Objective: To assess the accuracy of ankle brachial pressure index (ABPI) assessed by photoplethysmography (PPG) compared with continuous wave Doppler (CW-Doppler). Methods: Ankle brachial pressure index was measured in a standard manner using both PPG and Doppler probes. For PPG-ABPI, a PPG probe was placed on the index finger and great toe, and a microcomputer determined the ABPI. These values were compared with the ABPI measured manually using an 8-MHz Doppler probe. Correlation and agreement between PPG and Doppler ABPI were assessed by Lin’s correlation coefficient and Bland—Altman plots. Results: In all, 133 claudicants were assessed. There was a strong correlation between the 2 ABPI methods (β = .79 and 95% limits of agreement of —0.23 to 0.24). Conclusion: Measuring ABPI automatically using the PPG technique is an effective alternative for Doppler ABPI. PPG-ABPI is completely objective, fast, and accurate.
ISSN:1538-5744
1938-9116
DOI:10.1177/1538574409334829