Bacteriological Profile of Pathogens in Burns Unit of a Tertiary Care Center: A Retrospective Observational Study

This retrospective observational study analyzes the bacteriological profile of pathogens causing burn wound infections in a tertiary care center.

This study was conducted at Father Muller Medical College Hospital, Karnataka, India, from January 2014 through December 2016. The specimens (ie, pus or a wound swab) were collected from patients with suspected of infection and processed as per standard microbiological techniques. The antibiotic sensitivity testing was performed by the Kirby Bauer's disk diffusion test on Mueller-Hinton agar as per Clinical and Laboratory Standards Institute guidelines.

During the study period, a total of 124 eligible patient samples were collected; 22 samples were excluded as there was no significant growth/colonization. Among the 102 patients included in the study, 56 (54.9%) were females and the majority (33, 32.35%) of the patients were between 18 to 30 years. Acinetobacter species and Pseudomonas aeruginosa (26.56% each) were the most common pathogen among gram-negative bacteria and Staphylococcus aureus (36, 11.25%) was the most common gram-positive bacteria. Methicillin resistance was 30.5% among the Staphylococcus aureus isolates. Most of Acinetobacter species isolates were resistant to piperacillin tazobactum (84.71%), meropenem (80%), and amikacin (87.06%). Other gram-negative bacteria were also emerging with multidrug resistance.

The current study revealed the non-fermenting Gram-negative bacteria as the leading cause of burn wound infection and are highly resistant to available high-level antibacterial agents.