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  • Title: Are ankle and toe brachial indices (ABI-TBI) obtained by a pocket Doppler interchangeable with those obtained by standard laboratory equipment?
    Author: Bonham PA, Cappuccio M, Hulsey T, Michel Y, Kelechi T, Jenkins C, Robison J.
    Journal: J Wound Ostomy Continence Nurs; 2007; 34(1):35-44. PubMed ID: 17228206.
    Abstract:
    PURPOSE: The aim of this study was to determine if the ankle and toe brachial indices obtained by an experienced registered nurse (RN) using a pocket Doppler were within acceptable levels of agreement with those obtained by a registered vascular technologist (RVT) using standard laboratory equipment. DESIGN: A within-subjects comparative design was used. SETTING AND SUBJECTS: Thirty subjects who were referred to a vascular laboratory for arterial studies were recruited. All tests were performed in the outpatient vascular laboratory of a large, urban medical center. METHODOLOGY: Ankle and toe brachial indices were measured on each subject by the RN and the RVT during each visit. Data were analyzed using the Bland-Altman method to assess the level of agreement between the RN's pocket Doppler and the RVT's standard laboratory equipment. RESULTS: Differences between each instrument's ankle brachial indices were within the a priori 15% limit of agreement. Differences between each instrument's toe brachial indices exceeded the a priori 15% limit of agreement. CONCLUSION: The ankle brachial index obtained by using a pocket Doppler by an experienced RN is interchangeable with vascular laboratory testing for detection of lower extremity arterial disease (LEAD). The pocket Doppler-derived toe brachial index was not interchangeable with vascular laboratory testing for detection of LEAD.
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