Geographic variation as a risk factor for digital ulcers in systemic sclerosis patients: a multicentre registry
2017
Objective: To evaluate the influence of geographic variation on the risk of digital ulcer (DU) development in systemic sclerosis (SSc) patients.Methods: This cross-sectional, multicentre study evaluated patients with SSc from centres located in different geographic regions of Brazil (subtropical and tropical climate zones). Demographic and clinical data were collected.Results: The study included 141 patients with SSc (26 from the subtropical and 115 from the tropical zone). In total, 43 DUs were observed in 23 (16%) of the patients. By a simple logistic regression model, the presence of DUs was associated with a higher modified Rodnan skin score, previous necrosis or amputation of the extremities, flexion contracture of the fingers, active smoking, higher avascular score on capillaroscopy, higher severity of Raynaud’s phenomenon, a higher Health Assessment Questionnaire Disability Index (HAQ-DI) score, a higher visual analogue scale score for Raynaud’s phenomenon and overall disease, and the subtropical c...
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