A clinical assessment of the performance of a sensor to detect crystalline biofilm formation on indwelling bladder catheters

摘要: OBJECTIVES To test the ability of a sensor developed to signal infection by organisms that generate crystalline biofilms encrust catheters, give an early warning encrustation was occurring on patients’ as care many patients undergoing long-term bladder catheterization is complicated and blockage their catheters PATIENTS AND METHODS Twenty were followed prospectively for lifetime one catheters. Sensors based cellulose acetate/bromothymol blue placed in urine-collection bags, which changed usual at weekly intervals. The bacteriology assessed pH determined urine samples. Photographic records made sensors twice weekly. On removal, each catheter examined blockage. RESULTS Proteus mirabilis not isolated from five these cases colour remained golden-yellow brown. catheters drained scheduled period showed no signs encrustation. By contrast, turned dark blue/black all 15 infected with P. mirabilis. All encrusted 12 blocked. mean interval between signalling blocking 12 days. CONCLUSION The collection bags are capable They also stages allow replacement ample time avoid clinical crises emergency referrals caused blockage.