JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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The peripheral atherosclerotic profile in patients with type 1 diabetes warrants a thorough vascular assessment of asymptomatic patients.

AIMS: Epidemiological data on subclinical atherosclerotic disease in type 1 diabetes mellitus (DM1) are scarce. We aimed to estimate the subclinical atherosclerosis profile of asymptomatic patients with DM1 and an abnormal ankle-brachial index (ABI).

MATERIAL AND METHODS: In a cross-sectional design (ClinicalTrials.gov Identifier: NCT02910271), we estimated ABI in 289 consecutive asymptomatic patients with DM1. An abnormal ABI led to measurements of toe-brachial index (TBI) and peripheral doppler ultrasound (DUS) to diagnose peripheral artery disease (PAD) and/or atherosclerotic carotid plaques (ACP).

RESULTS: A reduced (≤0.9) or increased (>1.2) ABI was detected in 17 (6%) and 75 (26%) patients, respectively. PAD was confirmed by TBI and DUS in 9 (53%) patients with a reduced ABI and 28 (37%) patients with an increased ABI, resulting in a 12.8% (9.4-17.2) prevalence of asymptomatic PAD. Fourteen patients with an abnormal ABI also exhibited ACP [4.8% (2.9-7.9)], with 64% of these patients showing bilateral disease. Artery stenosis was mild or moderate in 21% and 29% of patients, respectively. Thus, 46 [16% (12-21)] patients showed asymptomatic PAD, ACP, or both. According to our data, we would have to explore three asymptomatic patients with DM1 and normal pulses to unmask one case of PAD, and seven asymptomatic patients showing abnormal ABI values to detect one carotid disease.

CONCLUSIONS: Peripheral artery disease is often undiagnosed in asymptomatic patients with DM1. However, its presence may change medical management in a substantial percentage of cases, highlighting the potential benefit of a thorough vascular assessment on these patients.

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