Saudi Journal of Pathology and Microbiology (SJPM)
Volume-5 | Issue-12 | 529-533
Original Research Article
To Evaluate Different Phenotypic Diffusion Methods in the Identification of ESBL Producing Uropathogenic Escherichia Coli
Dr. Lubna Bandey, Nousheen
Published : Dec. 31, 2020
Abstract
Introduction: A urinary tract infection (UTI) is an infection in any part of urinary system namely kidneys, ureters, bladder and urethra. UTIs are caused by both Gram-negative and Gram-positive bacteria, as well as by certain fungi. The most common causative agent for both complicated and uncomplicated UTIs is uropathogenic Escherichia coli (UPEC). Materials and Methods: This is a prospective study and observational study conducted in the Department of Microbiology, Surabhi Institute of Medical Sciences. A total of 200 consecutive urine samples were screened from patients with symptomatic UTI. Clean-catch midstream urine samples were collected in sterile disposable container and processed within one hour. Semi quantitative loop measuring 2.2 mm diameter with a holding capacity of 0.004ml was employed to culture urine on CLED agar and MacConkey’s agar. The inoculated plates were incubated over night at 370C Isolates in significant number (colony count ≥ 105 CFU/ml) were identified by standard procedures. Results: A sum of 200 patients who satisfied the inclusion principles during the investigation were enlisted. The present study shows the pathogens causing UTIs and their antibiotic susceptibility pattern. Escherichia.coli 48.5% was the predominant pathogen followed by Klebsiella pneumoniae 23%, Proteus spp. 13.5%, Staphylococcus aureus 7.5%, Pseudomonas aeruginosa 2.5%, Citrobacter spp. 3%, Staphylococcus saprophyticus 0.5%, Enterococcus faecalis 1% and Acinetobacter spp. 0.5%. In our study, high susceptibility of meropenem (76.2%) and imipenem (72.1%) was seen and least were Ciprofloxacin 13.5%. Conclusion: Infections caused by ESBL- producing bacteria often limits therapeutic options, leading to high disease burden. Therefore, diagnostic laboratories are in need of reliable, cost efficient and less labour-intensive methods to use in the detection of ESBL- producing bacteria. The public health implications of this are disturbing thus the need to rapidly detect these pathogens in the laboratory.