No abstract

Enter obacteriaceae families are capable of producing the extended spectrum beta-lactamase (ESBL) enzyme, which results in highlevels of resistance to all beta-lactam antibiotics. For effective antibiotic therapy, to stop the spread of resistance mechanisms, and forepidemiological reasons, their detection is crucial. 53 Gram negative isolates were detected using a standard methodology in the currentinvestigation, which compared various phenotypic methods for ESBL detection. Antibiotic susceptibility testing (AST) was alsoperformed on these isolates. Phenotypic confirmatory Double Disk Synergy Test (30 mm), Double Disk Synergy Test (30 mm), ModifyDouble Disk, and the ESBL E-Test were used to further validate the presence of ESBLs. 20 ESBLs were produced in the case of DDST(30 mm), and specificity for cefepime was 84%, rising to 86% in the case of cefepime combination. The sensitivity was high forCefepime alone (92%), while in combination it was 87% and 92% with Ceftazidime and Cefotaxime. DDST (20mm) 15 ESBLproductions was seen once more. MDDST (20mm) has a sensitivity of 94% and identified 20 isolates as ESBL. The generation of 20ESBLs was seen in the ESBL E test, and Cefepime alone showed the highest level of sensitivity. As a result, it was discovered thatcefepime was the most effective cephalosporin for ESBL detection, followed by cefotaxime, ceftazidime, and cefpodoxime.