# Urinary Tract Infections in Patients Undergoing Invasive Urodynamic Study: A Prospective Observational Study at a Tertiary Care Centre in Eastern India

## TL;DR

This study found a low risk of urinary tract infections after invasive urodynamic studies and suggests that not all patients need antibiotics beforehand.

## Contribution

The study provides new prevalence data and identifies specific risk factors for UTIs after urodynamic studies in an Indian hospital setting.

## Key findings

- 14 patients (6.1%) had significant bacteriuria after the procedure.
- 6 patients (4.7%) developed symptoms of UTI.
- Higher detrusor pressure and post-void residue were associated with positive urine cultures.

## Abstract

Objective: The aim of the study was to find the estimate of the prevalence of urinary tract infections following invasive urodynamic studies (UDS) in a hospital setup and to identify the risk factors related to it.

Method: A total of 100 patients were enrolled in this prospective observational study after standard preoperative work, which included both urine analysis and culture procedure. The study was carried out from April 2022 to April 2023 at the Department of Urology, Indira Gandhi Institute of Medical Sciences, India. Three days following the UDS test, all the patients underwent repeat urine analysis and culture, besides screening for any lower urinary tract symptoms, abdominal pain, and fever.

Result: Among all, 14 patients (i.e., 6.1% of 85 individuals) had significant bacteriuria, and six patients (4.7%) developed symptoms of UTI. However, a strong association was observed between the maximal detrusor pressure during voiding (Pdet at Q max) and post-void residue (PVR), which were >20 mL before UDS, along with positive urine cultures after UDS, which was significant at <0.05.

Conclusion: The study demonstrated that the risk of UTIs with this diagnostic technique is minimal and that prophylactic antibiotic medication is not necessary prior to UDS in all patients.