How To Catheterize the Urethra in Women VIDEO How To Do Urethral Catheterization in Males VIDEO Complications of bladder catheterization include all of the following: Urethral or bladder trauma with bleeding or microscopic hematuria (common) UTI (common) Creation of false passages Scarring and strictures Bladder perforation (rare) Paraphimosis in uncircumcised males if the foreskin is not repositioned Catheter-associated UTIs tend to increase morbidity, mortality, health care costs, and hospital length of stay.