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Pseudomonas resistance to gentamicin
Abstract:
66 burned patients admitted to the Burn Unit from Jan. to Sept., 1977, were studied. Topical therapy employed was mafenide or silver sulfadiazine. The most common pathogens isolated in 288 burn wound cultures were Pseudomonas aeruginosa (42%), Klebsiella-Enterobacter (16%), and Staph, aureus (13%). Pseudomonas was sensitive to gentamicin in only 36.2% of instances. In 1976, 42% of Pseudomonas isolates was sensitive. During the period 1969-1973, 85.7% of the Pseudomonas was sensitive to gentamicin.
Insights
Burn wound infections are a major concern, with Pseudomonas aeruginosa often resistant to gentamicin. This study highlights a concerning decline in gentamicin sensitivity among burn pathogens over time.
Area of Science:
- Infectious Diseases
- Burn Care
- Microbiology
Background:
- Burn wound infections pose significant risks to patient recovery.
- Topical antimicrobial therapies are crucial in managing burn wound infections.
- Monitoring pathogen susceptibility is essential for effective treatment strategies.
Purpose of the Study:
- To analyze the microbial patterns and antibiotic susceptibility in burn wound infections.
- To evaluate the effectiveness of topical mafenide and silver sulfadiazine therapies.
- To assess trends in Pseudomonas aeruginosa gentamicin resistance.
Main Methods:
- Retrospective analysis of 288 burn wound cultures from 66 patients.
- Identification of common bacterial pathogens.
- Testing of bacterial isolates for antibiotic susceptibility, particularly to gentamicin.
Main Results:
- Pseudomonas aeruginosa was the most frequent pathogen (42%), followed by Klebsiella-Enterobacter (16%) and Staphylococcus aureus (13%).
- Gentamicin sensitivity for Pseudomonas aeruginosa isolates was only 36.2% in the study period.
- A significant decrease in gentamicin sensitivity was observed compared to previous years (42% in 1976, 85.7% in 1969-1973).
Conclusions:
- The declining sensitivity of Pseudomonas aeruginosa to gentamicin is a critical concern in burn wound management.
- Current topical therapies may require reassessment in light of evolving antimicrobial resistance patterns.
- Continuous surveillance of pathogen susceptibility is vital for optimizing burn patient care.