[Urinary infection in patients with short-term bladder catheterization].

Area of Science:

• Urology
• Infectious Diseases
• Medical Microbiology

Background:

• Urinary tract infections (UTIs) are a common complication of short-term bladder catheterization.
• Understanding the timing, source, and clinical significance of UTIs in catheterized patients is crucial for effective management.

Purpose of the Study:

• To determine the incidence of UTIs in patients with short-term bladder catheters.
• To investigate the time interval between catheterization and bacteriuria development.
• To identify the microbial pathways and clinical relevance of catheter-associated UTIs.

Main Methods:

• Daily urine cultures were performed on 83 patients from multiple sites (bladder, urethra, catheter connection, collection bag) for the first 5 days.
• Clinical and microbiological follow-up extended to 7 days post-catheter removal.
• Causative organisms were tracked to determine infection routes.

Main Results:

• Bacteriuria developed in 32% of patients, with a mean onset of 4.1 days after catheterization.
• 45% of bacteriuria cases were detected within 48 hours of catheter insertion.
• In 50% of cases, causative organisms were previously present in the urethra; spontaneous resolution occurred in 27%, while 42% required antibiotic therapy.

Conclusions:

• Urinary infections in this cohort were primarily caused by urethral colonization and subsequent migration to the bladder, often occurring during catheterization.
• A significant proportion of bacteriuria cases resolved without intervention, highlighting the importance of careful clinical assessment.