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Salvaging the zone of stasis is important for burn researchers because this can prevent an increase in the depth and width of the injured area. Statin analogues have many pleiotropic effects on the vessel walls and the coagulation and fibrinolytic systems. In this study, we investigated the effects of simvastatin, a statin analogue, administered to rats burned with a metal comb. No treatment was given to the control group (n = 10). Simvastatin was given at a dose of 5 mg/kg/d by intraperitoneal injection in treatment group (n = 10) for 7 days. Phosphate-buffered saline was given 1 mg/kg/d by intraperitoneal injection in sham group (n = 10). The groups were randomly divided into two subgroups (n = 5) for evaluation at 24 hours and 7 days. It was observed that there were necrotic areas and viable interspaces in both the experimental and control groups at 24 hours. The interspaces progressed to necrotic areas in the control and sham groups at 7 days. However, viable interspaces were separated from necrotic areas clearly in the treatment group at 7 days. In the samples taken from interspaces at 24 hours, positive staining for thrombomodulin (TM) for all groups was noted. In the samples taken from the control and phosphate-buffered saline groups at 7 days, there was negative staining for TM. However, in the samples taken from interspaces of the treatment group, positive staining for TM was observed. The conclusion of this study was that simvastatin potently increased endothelial TM expression in the zone of stasis and preserved the zone.

AbstractPseudomonas aeruginosa is one of the most frequently isolated organisms from infected burn wounds and a significant cause of nosocomial infection and septic mortality among burn patients. In this animal study, three antiseptic agents which were Octenidine dihydrochloride (Octenisept®, Schülke & Mayr, Norderstedt, Germany), polyhexanide (Prontosan®, B. Braun, Melsungen AG, Germany) and povidon iodine (Betadine, Purdue Pharma L.P, Stamford, USA) were compared to assess the antiseptic effect of their applications on experimental burn wounds in in rats contaiminated with P. aeruginosa. All treatment modalities were effective against P. aeruginosa because there were significant differences between treatment groups and control groups. The mean eschar concentrations were not different between polyhexanide and povidon iodine groups, but there were significant differences between the octenidine dihydrochloride group and the other treatment groups, indicating that the Octenidine dihydrochloride significantly eliminated P. aeruginosa more effectively in the tissues compared to the to other agents. All treatment modalities were sufficient to prevent the P. aeruginosa invasion into the muscle and to cause systemic infection. In conclusion, Octenidine dihydrochloride is the most effective antiseptic agent in the treatment of the P. aeruginosa-contaminated burn wounds; Octenidine dihydrochloride can be considered as a treatment choice because of its peculiar ability of limit the frequency of replacing wound dressings.

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We concluded that unless there are certain risk factors such as arterial hypertension, diabetes, peripheral vascular disease, and vasculitis, avoiding a subcutaneous tunneling is not necessary.

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