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Impact of Diabetes on Burn Injury: Preliminary Results From Prospective Study

Reducing diabetes mellitus complications has been a major focus for Healthy People 2010. A prior retrospective cohort of our burn center's admissions revealed worse outcomes among diabetic patients, that is, increased infection rates, grafting and graft complications, and increased length of hospital stay. Therefore, a prospective study has been designed to carefully assess wound repair and recovery of diabetic and nondiabetic burn patients. Our long-term aim is to determine the characteristics of the wound milieu along with global responses to injury that may predict poor outcome among diabetic patients. This is an initial phase of a larger observational study of in-hospital diabetic (types 1 and 2) and nondiabetic patients, prospectively matched for age (18–70 and >70 years) and burn size (<5, 5–15, and 16–25%). Time (days) to complete index wound closure, documented through serial photography, is the main outcome measure. Secondary measures compare delays in presentation, prevalence of infections, graft rates, wound and graft complications, adverse events, and length of hospital stay. Detailed history, physical, and baseline hemoglobin A1C are elicited from all subjects who are assessed daily over the initial 72 hours poststudy entry, then weekly until complete index wound closure, and finally monthly through 3 months. Forty subjects are presented herein, 24 diabetic and 16 nondiabetic patients. Time to index wound closure was significantly prolonged in diabetic patients, despite increased grafting. These findings suggest that excision and grafting in diabetic patients may not alone be sufficient to ensure rapid closure, as graft complications may contribute to protracted closure. Evaluating graft need may be more complex among diabetic patients, suggesting the need for alternative management strategies. The current prospective study confirms our previous retrospective analysis, notably manifested by significant delays in index wound closure. Our efforts continue in identifying the most important predictors of outcome, especially modifiable factors that would create a basis of intervention to improve care.