Summary: Eighty percent of nosocomial UTI caused by indwelling urinary catheters and so known-as catheter-associated UTI. CAUTI leads to multiple local and systemic derangements such as suprapubic pain, dysuria, cystitis, pyelonephritis, septicemia, and even septic shock.~This study will be conducted up on 100 patients (50 per each group) with long term catheterization to assess efficacy of noble metal all...