Overview of Catheter-Associated Urinary Tract Infection (CAUTI) Caused by Gram-Negative Pathogens and the Study of Antibiotic-Susceptibility Test Patterns of Bacterial Samples
Sivaranjani1 , and Karthik Sundaram2*
1,2*Department of Microbiology, Dr. N.G.P Arts & Science College, Coimbatore - 641 048 (India) Corresponding author: karthiksundaram@drngpasc.ac.in
ABSTRACT
The increased morbidity and mortality rates in catheterassociated urinary tract infections (CAUTIs) in the hospital environment in recent times are a serious concern today. About 75% of UTIs develop in hospitals, mainly from urinary catheters, which is one of the most common healthcare-associated infections (HAIs) and causes increased healthcare costs and length of hospital stay. According to the CDC 2025 reports, each year, it has been estimated that more than 13,000 deaths are associated with this infection. In this study, E. coli, Pseudomonas aeruginosa, Klebsiella pneumoniae, Proteus mirabilis, Proteus vulgaris, Acinetobacter baumannii, and Serratia marcescens are seven gram-negative organisms targeted and tested in an antibiotic susceptibility test (AST) using the disc diffusion method.