What are the effects of policies for replacing long-term indwelling urinary catheters in adults?

2019 ◽  
Author(s):  
Sera Tort ◽  
Jane Burch
Keyword(s):  
2007 ◽  
Vol 56 (11) ◽  
pp. 1549-1557 ◽  
Author(s):  
Sarah M. Macleod ◽  
David J. Stickler

Previous experimental investigations of the crystalline biofilms that colonize and block urinary catheters have focussed on their formation by pure cultures of Proteus mirabilis. In the urine of patients undergoing long-term catheterization, P. mirabilis is commonly found in mixed communities with other urinary tract pathogens. Little is known about the effect that the other species have on the rate at which P. mirabilis encrusts catheters. In the present study, a set of data on the nature of the bacterial communities on 106 catheter biofilms has been analysed and it was found that while species such as Providencia stuartii and Klebsiella pneumoniae were commonly associated with P. mirabilis, when Escherichia coli, Morganella morganii or Enterobacter cloacae were present, P. mirabilis was rarely or never found. The hypothesis that the absence of P. mirabilis from some biofilm communities could be due to its active exclusion by other species has also been examined. Experiments in laboratory models showed that co-infection of P. mirabilis with M. morganii, K. pneumoniae or E. coli had no effect on the ability of P. mirabilis to encrust and block catheters. Co-infection with Ent. cloacae or Pseudomonas aeruginosa, however, significantly increased the time that catheters took to block (P <0.05). The growth of Ent. cloacae, M. morganii, K. pneumoniae or E. coli in the model for 72 h prior to superinfection with P. mirabilis significantly delayed catheter blockage. In the case of Ent. cloacae, for example, the mean time to blockage was extended from 28.7 h to 60.7 h (P ≤0.01). In all cases, however, P. mirabilis was able to generate alkaline urine, colonize the biofilms, induce crystal formation and block the catheters. The results suggest that although there is a degree of antagonism between P. mirabilis and some of the other urinary tract organisms, the effects are temporary and whatever the pre-existing urinary microbiota, infection with P. mirabilis is thus likely to lead to catheter encrustation and blockage.


Author(s):  
Fergus PM Cooper ◽  
Cameron Edwin Alexander ◽  
Sanjay Sinha ◽  
Muhammad Imran Omar
Keyword(s):  

Author(s):  
Patrick Jahn ◽  
Michael Preuss ◽  
Anett Kernig ◽  
Gero Langer ◽  
Anja Seifert-Huehmer

2014 ◽  
Vol 8 (7-8) ◽  
pp. 510 ◽  
Author(s):  
Peter Alexander Massaro ◽  
Jonathan Moore ◽  
Tarek Rahmeh ◽  
Michael J. Morse

Squamous cell carcinoma (SCC) of the bladder is uncommon, but can arise in the setting of long-term bladder catheterization and chronic inflammation. SCC can arise primarily from the suprapubic catheter tract, but fewer than 10 such cases have been reported. We document 2 cases of SCC arising from the suprapubic tract associated with chronic indwelling urinary catheters. SCC must be differentiated from granulomatous conditions, which are quite common in patients with suprapubic catheters.


2011 ◽  
Vol 45 (6) ◽  
pp. 401-405 ◽  
Author(s):  
Karin Jonsson ◽  
Anna-Lena E-Son Loft ◽  
Salmir Nasic ◽  
Hans Hedelin
Keyword(s):  

Pathogens ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 835
Author(s):  
Jordan R. Gaston ◽  
Marissa J. Andersen ◽  
Alexandra O. Johnson ◽  
Kirsten L. Bair ◽  
Christopher M. Sullivan ◽  
...  

Indwelling urinary catheters are common in health care settings and can lead to catheter-associated urinary tract infection (CAUTI). Long-term catheterization causes polymicrobial colonization of the catheter and urine, for which the clinical significance is poorly understood. Through prospective assessment of catheter urine colonization, we identified Enterococcus faecalis and Proteus mirabilis as the most prevalent and persistent co-colonizers. Clinical isolates of both species successfully co-colonized in a murine model of CAUTI, and they were observed to co-localize on catheter biofilms during infection. We further demonstrate that P. mirabilis preferentially adheres to E. faecalis during biofilm formation, and that contact-dependent interactions between E. faecalis and P. mirabilis facilitate establishment of a robust biofilm architecture that enhances antimicrobial resistance for both species. E. faecalis may therefore act as a pioneer species on urinary catheters, establishing an ideal surface for persistent colonization by more traditional pathogens such as P. mirabilis.


2019 ◽  
Vol 80 (9) ◽  
pp. C136-C138
Author(s):  
Elizabeth Tan ◽  
Aashish Ahluwalia ◽  
Hadyn Kankam ◽  
Pravin Menezes

Urinary catheterization is an important procedure that is regularly performed in hospital. All clinicians should have a good working knowledge of urinary catheters and the competence to manage them effectively. This topic is discussed over two articles: the first article focused on indications, and this second discusses techniques and managing failure. Good technique is essential to prevent complications and if problems do occur, these must be managed efficiently to prevent long-term consequences. In some situations, this may require referral to the urology team for more specialized intervention. This article discusses this in more detail to help guide clinicians involved in urethral catheterization.


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