A Study of Antibiotic Susceptibility and Clinical Characteristics in Bacterial Skin Infection / 대한피부과학회지

ABSTRACT

Background@#Bacterial skin soft-tissue infection is a common clinical manifestation in dermatology. The treatment of bacterial skin infections is often challenging due to antibiotic resistance, including methicillin resistance. @*Objective@#The aim of this study was to investigate the isolation rate of bacteria, antibiotic susceptibility, clinical features, and factors associated with treatment response in bacterial skin infections. @*Methods@#We retrospectively reviewed the medical records of patients who underwent ordinary bacterial skin cultures of the site of superficial skin infections between 2010 and 2019. @*Results@#A total of 1,298 patients were included in the study. The most commonly isolated bacteria were Staphylococcus aureus (31.3%), followed by coagulase-negative staphylococci (22.0%) and Pseudomonas species (4.2%). The methicillin-resistance rate of S. aureus was 22.7%. Crusted lesions (p=0.025), treatment with steroids (p=0.035), duration over 7 days (p=0.009), and isolation of Pseudomonas (p＜0.001) or other uncommon species (non-Staphylococcus, Streptococcus, and Pseudomonas species, p＜0.001) were significantly associated with treatment response. @*Conclusion@#The methicillin-resistance rate of S. aureus was similar to that of the past 5 years, but the mupirocin-resistance rate significantly increased. Lesions with crust or those that were treated with steroids showed good treatment responses, but longer disease durations of over 7 days and skin infections caused by Pseudomonas or other uncommon species were poor prognostic factors that should receive more attention.