BACTERIOLOGICAL PROFILE AND ANTIBIOGRAM OF INDWELLING CATHETER TIPS IN POST OPERATIVE CARDIAC SURGICAL PATIENTS ADMITTED AT A MEDICAL COLLEGE IN KOLKATA

Microbial testing and antibiotic sensitivity from central venous, arterial line and urinary catheter tips have a paramount importance in reduction of infection in post operative patients. Objectives were to nd out the incidence of culture positive tips of central venous catheter, arterial line catheter and urinary catheter, and to identify the microorganisms along with their antibiotic sensitivity. Male participants were the majority with 21 to 40 years age group to be maximum affected and CABG to be the most common procedure involved. Samples were plated on blood agar and MacConkey agar, followed by performing gram stain and biochemical tests for microbial identication. Incidence of causative bacteria isolated from different catheter tips revealed gram negative bacilli to be more than gram positive organisms. Escherichia coli and Acinetobacter baumannii complex showed maximum sensitivity to Minocycline and partial sensitivity to aminoglycosides with other antibiotics to be predominantly resistant. Klebsiella pneumoniae showed maximum sensitivity to cotrimoxazole and partial sensitivity to aminoglycosides. Pseudomonas aeruginosa was pan resistant. MRSA was sensitive to linezolid, gentamicin, enterococcus faecium to vancomycin and staphylococcus saprophyticus to cotrimoxazole and linezolid. Antibiogram is thus an important tool in choosing selected antibiotics in order to prevent emergent bacterial resistance.