Use of Catheter
People who use a catheter for passing urine could develop UTI from the insertion of the catheter or its prolonged presence in the urethra. Naturally, the thing you put up the urethra tract must be sterile. The body is also not used to the presence of a foreign body in the urethra for extended periods. Hospitalized individuals with indwelling urinary catheters are more prone to urethral, bladder, and kidney infections.