Study of Non-Fermentative Gram Negative Bacilli
DOI:
https://doi.org/10.7439/ijbar.v10i5.5189Keywords:
Non?fermenting Gram?negative bacilli (NFGNB), Acinetobacter, Pseudomonas, Stenotrophomonas, Burkholderia, Antimicrobial susceptibility patternAbstract
Aim and Objectives: To isolate and identify Non?fermenting Gram?negative bacilli (NFGNB) from clinical specimens and to study the antimicrobial susceptibility pattern of the isolates.
Methods: This study was conducted in the Department of Microbiology in a Tertiary Care Hospital during the period of two years. NFGNB were isolated and identified from a variety of clinical specimens by standard procedure and antibiotic sensitivity test was performed.
Results: NFGNB isolation rate was found to be 5.19%. Acinetobacter spp. was the most common isolate (56.82%) followed by Pseudomonas spp. (40.92%), Stenotrophomonas maltophilia (1.36%) and Burkholderia cepacia complex (0.90%). Maximum sensitivity of Acinetobacter was seen to Imipenem (82.40%), followed by Amikacin (62%), Piperacillin-tazobactamin combination (52.40%). Pseudomonas isolates showed 100 % sensitivity to Colistin and Polymyxin B followed by Imipenem (86.67%), Amikacin (71.67%) and Piperacillin-tazobactam (70.56%). Stenotrophomonas maltophilia isolates were sensitive to Trimethoprim-Sulfamethoxazole (83.33%) and 66.67% were sensitive to Levofloxacin. Isolates of Burkholderia cepacia complex (BCC) were 100% sensitive to Meropenem and Ceftazidime followed by Trimethoprim-Sulfamethoxazole (75%).
Conclusion: Early detection and Identification of NFGNB and monitoring their susceptibility pattern are necessary to guide the clinician for better care and management of patients. NFGNB are now emerging as organisms of nosocomial infections. Hence, regular antimicrobial susceptibility surveillance and strict infection control measures are needed to prevent the emergence and spread of multi drug resistant NFGNB in health care settings.
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