Influence of systematic antibiotic prophylaxis and/or cystoscope cleaning/disinfecting method on urinary culture becoming positive after outpatient flexible cystoscopy

Roberto Martínez Rodríguez, Emilia Felip, Montse Arzoz Fabregas, José Ruiz Domínguez, Luis Ibarz Servio

Research output: Contribution to journalArticleResearchpeer-review

Abstract

© 2019 Iniestares, S.A.. All rights reserved. INTRODUCTION AND OBJECTIVES: To evaluate the efficacy of antibiotic prophylaxis as well as the cleaning/disinfection procedures to prevent urinary tract infection in patients undergoing office flexible cystoscopy. METHODS: A prospective, randomized study was performed between June 2015 to May 2016 including every patient who underwent flexible cystoscopy at the Urology outpatient unit. Patients with temporary or permanent urinary stents were excluded from the study as well as procedures that involved bladder biopsies. A total of 251 patients were recruited. Urinary culture was collected in all of the patients before and after the procedure. Patients were randomized in two groups: Antibiotic prophylaxis versus no prophylaxis. Antibiotic prophylaxis consisted in 4 doses of Norfloxacin (400mg): twice a day during two days. Three different cleaning/ disinfection methods were used: manual adasport (5% peracetic acid), manual oxide (instrunet sporicidal; Inibsa) and washing machine (Olympus, mini ETD 2). Demographic characteristics such as gender and age were collected during the study. Relationship between antibiotic prophylaxis, type of cleaning/disinfection procedure, demographic characteristics and positive urinary culture after procedure were analysed. Measures to avoid bias: Randomization. RESULTS: Urinary culture before cystoscopy was negative in 231 patients (92.4%), positive in 19 (7.6%) and not valid in 1. After randomization, 129 patients were included in Group 1(no prophylaxis) and 117 in Group 2 (antibiotic prophylaxis), 5 patients dropped from the study. After-procedure culture was negative in 224 patients (91.1%) and positive in 22 (8.9%). There was no statistical significance between urine culture results before and after cystoscopy and the demographic characteristics collected. Furthermore, no statistical differences were seen between urine culture after cystoscopy and cystoscope cleaning method (p=0.7), or between urine culture and type of cleaning with or without antibiotic prophylaxis (p=0.5, p=0.9).CONCLUSIONS: None of the analyzed variables influenced the positivity of urine culture after flexible cystoscopy. Routine antibiotic prophylaxis should not be further recommended.
Original languageEnglish
Pages (from-to)554-559
JournalArchivos Espanoles de Urologia
Volume72
Publication statusPublished - 1 Jan 2019

Keywords

  • Antibiotic prophylaxis
  • Endoscopy
  • Flexible cystoscopy
  • Urinary infection

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