Abstract
Objective: The present study was carried out to identify Klebsiella species and their antimicrobial resistance pattern from various clinical specimens. Methods: This cross study was conducted at a tertiary care hospital, Dhaka, Bangladesh from July2020 to June 2021. Written consent was taken from the concerned authority. A total 6739 clinical samples including urine, wound swab/ pus, sputum, blood and endotracheal aspirates were collected and processed for isolation of bacteria by following standard guidelines from adult patients. All the urine, wound swab, blood and endotracheal aspirates were inoculated in both blood agar and MacConkey agar media, for blood samples blood culture was done in BacT/ALERT 3D 60 aerobic bottles irrespective to antibiotics administration. After incubation at 370C aerobically for 24 hours incubated plates were examined. Phenotypic identification of the organisms were done by observing colony morphology, hemolytic properties, pigment production, Gram staining and biochemical tests (oxidase test, catalase test and biochemical reactions after inoculation in TSI, MIU, citrate agar media). The Kirby - Bauer disk diffusion method was used for antimicrobial susceptibility testing of the isolated organism using Mueller-Hinton agar and commercially available antibiotic discs (Oxoid Ltd, UK). The data were analyzed using SPSS software Version-20 (SPSS Inc., Chicago, IL, USA). Categorical variables were expressed as numbers (n) and percentages (%). Results: A total 6739 samples were included in the present study. Of which, 170 were urine, 162 were wound swabs, 71 were sputum, 52 were endotracheal aspirates and 45 were blood samples. Culture positivity among the samples is shown in table I. Conclusion: Most of the Klebsiella species are highly resistant to commonly used antibiotics. This higher resistance is the major cause morbidity and mortality related with infections in hospitalized patients. So, a regular surveillance of antibiotic susceptibility pattern is needed to prevent indiscriminate use of antibiotics. CME J 2024; 3(2); 12-15
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