Comparative evaluation of commonly used catheters through histopathological changes induced in bladder urothelium.

There is growing concern about the toxic potential of chemicals coating various catheter materials, especially due to lack of international standards for toxicity testing. The present study evaluates the toxicity potential in terms of pathological changes induced by the catheters commonly used in practice, i.e. latex-, silicone- and Teflon-coated catheters. Teflon-coated catheters appear to be superior to others in the present study.