JOURNAL ARTICLE

[Peripheral arterial disease in diabetic patients: utility of the toe-brachial index]

Virginia Martín Borge, Lucrecia Herranz de la Morena, Inés Castro Dufourny, Luis Felipe Pallardo Sánchez
Medicina Clínica 2008 May 3, 130 (16): 611-2
18482527

BACKGROUND AND OBJECTIVE: To evaluate the influence of peripheral neuropathy, autonomic neuropathy and arterial wall calcification on the concordance of ankle-brachial index (ABI) and toe-brachial index (TBI) in diabetic patients.

PATIENTS AND METHOD: We evaluated in 221 diabetic patients (73.8% type 2; 66.6% male) the presence of: peripheral arterial disease, peripheral neuropathy, autonomic neuropathy and arterial wall calcification.

RESULTS: The mean (standard deviation) difference between ABI and TBI in our population was 0.33 (0.25). Patients with arterial wall calcification had a higher mean difference between ABI and TBI than patients without arterial wall calcification -0.87 (0.39) vs 0.30 (0.21) (p < 0.005)-. Mean difference between ABI and TBI was similar for patients with and without autonomic neuropathy -0.36 (0.26) vs 0.30 (0.24) (p = 0.057)- and for patients with and without peripheral neuropathy -0.34 (0.28) vs 0.31 (0.21) (p = 0.423)-. Among all patients there was a significant linear association (r = 0.506; p < 0.001) between ABI and TBI. For patients with arterial wall calcification there was no correlation between both indices (r = -0.070; p = 0,857).

CONCLUSIONS: Our findings indicate that in diabetic patients, TBI is the method of choice to evaluate lower limb perfusion in the presence of overt arterial wall calcification.

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