Antibiotic susceptibility of bacterial strains and bacteriological profile from patients with lower respiratory tract infections in a teaching hospital

Ritu Vaish


Background: Lower respiratory tract infections (LRTI) are one of the commonest health problems demanding frequent consultation and hospitalization. Unnecessary and inappropriate initial antibiotic therapy is a potentially modifiable factor that is associated with increased mortality in patients with serious infections.
Aim of the study: To study bacterial profile and susceptibility pattern of lower respiratory tract infections in a teaching hospital.
Materials and Methods: Prospective study done in the department of Microbiology at Prathima Institute of Medical Sciences, Nagunuru, Karimnagar, Telangana., Tover a period of 18 months ie from January 2019 to July 2020. A total of 120 samples from respiratory tract were studied for bacterial isolates and antibiotic susceptibility.
Results: A total of 120 cases were studied. The male to female ratio was 2:1. Among the bacterial isolates, 76.6% were Gram negative bacilli and 23.3% were gram positive cocci. Among Gram negative bacteria, the predominant bacterial isolate was Klebisella. pneumoniae (45.8%) followed by Pseudomonas. aeruginosa (28.3%.)
Conclusion: Present study, was based on the pattern of resistance to commonly used antibiotics by organisms causing lower respiratory tract infections (LRTIs) in our institute. This may help us to study the more susceptible group of drugs in our institute which would help prepare an antibiogram and develop a policy for rational antibiotic prescription.

Keywords: LRTI, Bacteriological profile, Antibiotic susceptibility.

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