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Infrequently reported, serious allergic reactions to topical antimicrobial agents used in the treatment of burn injuries are a potential source of confusion. To avoid misdirected therapy, an understanding of the manifestations of such reactions is important. Two recent cases of serious allergic reactions, one to silver sulphadiazine, one to mafenide acetate, are presented and the literature is reviewed.
The local application of mafenide acetate (Sulfamylon, Winthrop) applied to extensive burn areas resulted in acute methaemoglobinaemia.
A 5% mafenide acetate solution was used in the treatment of 669 patients with thermal injuries. This solution was used as the initial topical antibacterial agent in the treatment of the acute burn wound in 276 patients. It was initiated during the intermediate and chronic phases of burn wound therapy in 393 patients. Acid-base derangements did not occur. Discontinuation of therapy because of the patient's pain was necessary in fewer than 1% (17 of 669) of all patients treated. The incidence of rash and pruritus was extremely low. Effective antibacterial activity was achieved. This solution appears to be an effective, safe, and versatile antibacterial agent that produces minimal side effects and is useful in all phases of burn wound management.
Twenty-nine patients with necrotizing fasciitis who were treated with 5% mafenide acetate solution (MAS) as an adjunct after grafting were compared with 45 patients treated without MAS. Statistical analysis of differences was obtained through P values by chi2 testing. The MAS+ (M) and MAS- (C) groups were similar in percent skin deficit (M = 7.5%; C = 9.8%), with the extremity being the most common area of infection. Streptococcus was the most common single organism but polymicrobial infections were the most prevalent (M = 48%; C = 58%). Patients with necrotizing fasciitis treated with MAS had fewer debridements per patient (M = 3.7; C = 5.4), fewer closure procedures (average per patient: M = 1.2; C = 1.73) and a higher percent of first-time closures (83 vs 59%; chi2 = 4.26; P = 0.039). There is a trend toward a lower mortality rate (3.4 vs 13%; chi2 = 2.00; P = 0.158). We conclude that MAS is a useful adjunct in necrotizing fasciitis wound care protocols.
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In previous reports, 5% sulfamylon solution has been utilized on unexcised burns and granulation tissue. We prospectively evaluated 67 burn patients to determine graft take and the incidence of side effects with use of sulfamylon solution dressings after excision and grafting. Of patients excised and grafted, the mean graft take for a total of 100 procedures was 86%. Rash occurred in 18% of patients and sulfamylon was discontinued with no sequelae. Twenty-five percent had at least one positive fungal wound culture, yet only 3% required treatment for candidemia. Those patients who developed a rash and fungal colonization had a significantly larger percent burn and were treated with sulfamylon for a longer period of time. Pain intensity was rated on a Visual Analog Scale with a mean score of 2.4; in no case was the pain considered severe enough by the patient to terminate treatment. Acidosis was present in 3% of patients but felt to be unrelated to the sulfamylon treatment. As an antimicrobial agent, 5% sulfamylon solution is a viable alternative for fresh autografts with excellent graft take and acceptable side effects.
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A continuation of the study of 5% aqueous Sulfamylon solution dressings in burned patients was analyzed in 150 consecutive cases. The rate of invasive infection and mortality was not excessive. Dressings were used as an adjunct to other topical chemotherapeutic agents as well as homo/heterograft skin in the overall burn care program. Sulfamylon soaks were shown to be effective for debridement, granulation tissue protection and preparation, and bacterial control. The dressings were comfortable when in place and the wounds appeared clean. Epithelialization was not hampered so that the dressings could be utilized in partial thickness wounds as well as for mesh autografts on extensive burn surfaces=
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