Evaluation of Urinary Catheters Coated with Sustained‐Release Varnish of Chlorhexidine in Mitigating Biofilm Formation on Urinary Catheters in Dogs. (9th November 2012)

• Record Type: Journal Article
• Authors: Segev, G.; Bankirer, T.; Steinberg, D.; Duvdevani, M.; Shapur, N.K.; Friedman, M.; Lavy, E.
• Is Part Of: Journal of veterinary internal medicine. Volume 27:Number 1(2013:Jan./Feb.)
• Page Start: 39
• Page End: 46
• Publication Date: 2012-11-09
• Subjects: Veterinary medicine -- Periodicals; 636.0896
• DOI: 10.1111/j.1939-1676.2012.01027.x
• Languages: English
• ISSNs: 0891-6640

Abstract

<abstract abstract-type="main" id="jvim1027-abs-0001"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="jvim1027-sec-0001" sec-type="section"> <title>Background</title> <p>Biofilm formation occurs commonly on urinary catheters.</p> </sec> <sec id="jvim1027-sec-0002" sec-type="section"> <title>Objectives</title> <p>To assess the efficacy of urinary catheters coated with sustained‐release varnish of chlorhexidine in decreasing catheter‐associated biofilm formation in dogs.</p> </sec> <sec id="jvim1027-sec-0003" sec-type="section"> <title>Animals</title> </sec> <sec id="jvim1027-sec-0004" sec-type="section"> <p>Thirty client‐owned dogs.</p> </sec> <sec id="jvim1027-sec-0005" sec-type="section"> <title>Methods</title> <p>Prospective study. Thirteen dogs were catheterized with urinary catheters coated with sustained‐release varnish of chlorhexidine (study group), and 13 dogs were catheterized with an untreated urinary catheter (control group). Presence and intensity of biofilm formation on the urinary catheters were assessed and compared between the groups by evaluating colony‐forming units (CFU) of biofilm bacteria, and semiquantitatively, using confocal laser scanning microscopy and electron microscopy.</p> </sec> <sec id="jvim1027-sec-0006" sec-type="section"> <title>Results</title> <p>None of the dogs experienced adverse effects associated with the presence of the urinary catheters. Median CFU count of biofilm bacteria at all portions of the urinary catheter was significantly (<italic>P </italic><<italic> </italic>.001) lower in the study compared with the control group. The degree of biofilm formation on the urinary catheters, as evaluated by confocal laser scanning microscopy and electron microscopy, was significantly lower in the study compared with the control group. Electron microscopy examination identified crystals on some of the urinary catheters. The proportion of catheters on which crystals were observed was significantly lower on the distal part of the urinary catheter in the study group compared with the control group (16.7% versus 66.7%, respectively; <italic>P </italic>=<italic> </italic>.04).</p> </sec> <sec id="jvim1027-sec-0007" sec-type="section"> <title>Conclusions and Clinical Importance</title> <p>Chlorhexidine sustained‐release varnish‐coated urinary catheters effectively decrease urinary catheter‐associated biofilm formation in dogs.</p> </sec> </abstract>