Extended spectrum β-lactamase enzymes (ESBLs) are enzymes that have the ability to
hydrolyze oxyiminocephalosporins and infections by isolates producing them are often
difficult to treat. A study to detect the presence of these enzymes in isolates was conducted
by our hospital. A total of 207 non repetitive isolates were screened for resistance to any of
five screening agents. Those with suspicious profiles were checked for ESBL production by
double-disk approximation or a synergy test. The isolates were also subjected to a …