Effects of Early Eschar Excision En Masse at One Operation for Prevention and Treatment of Organ Dysfunction in Severely Burned Patients

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Abstract
We sought to determine whether early eschar excision en masse (EEE) at one operation would be effective in the prevention and treatment of postburn organ dysfunction (OD) and multiple organ dysfunction syndrome (MODS). A total of 60 patients, with total body surface burned area over 35% and a third degree burn area over 20% were studied and divided into two groups, the EEE group (35 cases) and the group treated with repeated escharectomies by stages (repeated escharectomy group, 25 cases). Other than the different operations undertaken, the patients in both groups received identical conventional treatment. Before, during, and after operation the hemodynamic and blood gas indices, plasma levels of endotoxin and tumor necrosis factor (TNF), and the injurious effects of burn patients' sera on endothelial cells in vitro were determined in patients of the EEE group. The incidence of OD and MODS was decreased significantly (11.4%) in patients of the EEE group, and the cure rate increased greatly (85.7%). The cardiac output dropped to 77.8% of its preoperative level at the end of escharectomy but began to rise at 2 hours and returned to its baseline levels at 24 hours after operation. Plasma levels of endotoxin and TNF and levels of lactic dehydrogenase and 6-keto-prostaglandin F1|ga in the endothelial cell culture media were all reduced profoundly. The cultured endothelial cells maintained their original morphology. The findings substantiate the hypothesis that eschar excision en masse at one operation is feasible and effective in preventing and treating early postburn OD and MODS, mainly by alleviating systemic inflammatory response syndrome and endothelial cell injury.

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