Oscillometric measurement of ankle-brachial index in patients with suspected peripheral disease: comparison with Doppler method

Diehm, N; Dick, F; Czuprin, C; Lawall, H; Baumgartner, I; Diehm, C (2009). Oscillometric measurement of ankle-brachial index in patients with suspected peripheral disease: comparison with Doppler method. Swiss medical weekly, 139(25-26), pp. 357-63. Muttenz: EMH Schweizerischer Ärzteverlag

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QUESTION UNDER STUDY: Purpose was to validate accuracy and reliability of automated oscillometric ankle-brachial (ABI) measurement prospectively against the current gold standard of Doppler-assisted ABI determination. METHODS: Oscillometric ABI was measured in 50 consecutive patients with peripheral arterial disease (n = 100 limbs, mean age 65 +/- 6 years, 31 men, 19 diabetics) after both high and low ABI had been determined conventionally by Doppler under standardised conditions. Correlation was assessed by linear regression and Pearson product moment correlation. Degree of inter-modality agreement was quantified by use of Bland and Altman method. RESULTS: Oscillometry was performed significantly faster than Doppler-assisted ABI (3.9 +/- 1.3 vs 11.4 +/- 3.8 minutes, P <0.001). Mean readings were 0.62 +/- 0.25, 0.70 +/- 0.22 and 0.63 +/- 0.39 for low, high and oscillometric ABI, respectively. Correlation between oscillometry and Doppler ABI was good overall (r = 0.76 for both low and high ABI) and excellent in oligo-symptomatic, non-diabetic patients (r = 0.81; 0.07 +/- 0.23); it was, however, limited in diabetic patients and in patients with critical limb ischaemia. In general, oscillometric ABI readings were slightly higher (+0.06), but linear regression analysis showed that correlation was sustained over the whole range of measurements. CONCLUSIONS: Results of automated oscillometric ABI determination correlated well with Doppler-assisted measurements and could be obtained in shorter time. Agreement was particularly high in oligo-symptomatic non-diabetic patients.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Angiology 04 Faculty of Medicine > Department of Cardiovascular Disorders (DHGE) > Clinic of Heart Surgery
UniBE Contributor:	Diehm, Nicolas Alexander, Dick, Florian, Baumgartner, Iris
ISSN:	1424-7860
Publisher:	EMH Schweizerischer Ärzteverlag
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:12
Last Modified:	27 Feb 2024 14:29
PubMed ID:	19562530
Web of Science ID:	000268367000003
URI:	https://boris.unibe.ch/id/eprint/31721 (FactScience: 196381)