Cieslinski J, Ribeiro VST, de Lima CK, Kraft L, Suss PH, Tuon FF. Sonication as a tool for disrupting biofilms and recovering microorganisms in bladder catheters.
J Bras Nefrol 2023;
45:373-377. [PMID:
37158483 PMCID:
PMC10697159 DOI:
10.1590/2175-8239-jbn-2022-0129en]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 03/09/2023] [Indexed: 05/10/2023] Open
Abstract
INTRODUCTION
Urinary catheter-related infection is commonly associated with bacterial biofilm. The impact of anaerobes is unknown, but their detection in the biofilm on this device has not been previously reported. This study aimed to evaluate the capability to recovery strict, facultative, and aerobic microorganisms in patients using bladder catheters from ICUs using conventional culture, sonication, urinary analysis, and mass spectrometry.
METHODS
Parallel, sonicated bladder catheters from 29 critically ill patients were compared with their routine urine culture. Identification was performed using matrix-assisted laser desorption/ionization with time-of-flight mass spectrometry.
RESULTS
The positivity rate in urine (n = 2, 3.4%) was lower than that in sonicated catheters (n = 7, 13.8%).
CONCLUSION
Bladder catheter sonication showed more positive culture results than urine samples for anaerobic and aerobic microorganisms. The role of anaerobes in urinary tract infection and catheter biofilm is discussed.
Collapse