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Accuracy of a foot temperature monitoring mat for predicting diabetic foot ulcers in patients with recent wounds or partial foot amputation

Ian L. Gordon, Gary M. Rothenberg, Brian D. Lepow, Brian J. Petersen, David R. Linders, Jonathan D. Bloom, David G. Armstrong
2020 Diabetes Research and Clinical Practice  
To assess the accuracy of once-daily foot temperature monitoring for predicting foot ulceration in diabetic patients with recent wounds and partial foot amputation, complications previously perceived as challenging. We completed a planned analysis of existing data from a recent study in 129 participants with a previously-healed diabetic foot ulcer. We considered four cohorts: all participants, participants with partial foot amputation, participants with a recent wound, and participants without
more » ... rticipants without partial foot amputation and without a recent wound. We reported the prediction specificity, lead time, and annualized alert frequency in each cohort at maximum sensitivity. We assessed the two potentially challenging cohorts for non-inferior accuracy relative to the control cohort using Delong's method. We report non-inferior predictive accuracy in each of the two potentially-challenging cohorts relative to the control cohort (⍺ < 0.05). The alert lead time was similar across these cohorts, ranging from 33 to 42 days. Once-daily foot temperature monitoring is no less accurate for predicting foot ulceration in those with recent wounds and partial foot amputations than in those without these complications. These results support expanded practice of once-daily foot temperature monitoring, which may result in improved patient outcomes and reduced healthcare resource utilization.
doi:10.1016/j.diabres.2020.108074 pmid:32109516 fatcat:vemkchbl55d6fiwq6nle2wdkuu