Burn Wound Bacteriological Profiles, Patient Outcomes, and Tangential Excision Timing: A Prospective, Observational Study.

PURPOSE: Because infection can thwart burn healing, microorganisms, their susceptibility patterns, and the effect of tangential excision timing on outcomes of burn patients were examined.

METHODS: A prospective, observational study was conducted that involved 318 patients with deep second-degree burns from a gas explosion treated in Xinxiang, Henan, China between January 2009 and December 2016. Patient demographic data, culture and antimicrobial susceptibility test results, and outcome variables (resuscitation fluid volume, signs of shock, body temperature, heart rate, and time to wound healing) were analyzed. Outcomes were compared among patients who had early (<24 hours), middle (2 to 7 days), and late (> 7 days) post burn excision.

RESULTS: Bacterial culture and drug sensitivity data were available for 314 of the 318 persons with burns >10% of total body surface area (TBSA). Of the 486 bacterial isolates, 330 (67.9%) were gram-negative and 156 (32.1%) were gram-positive. The number of isolates and resistance to third-generation cephalosporins increased over time. Patients having early tangential excision had significantly lower heart rate (P <.05) and reduced time to healing (P <.01) than patients in the middle or late excision group.

CONCLUSION: Early tangential excision was found to be safe and to facilitate healing.