Patients with Chronic Renal Failure are more susceptible to develop UTIs, because of altered immunity, uraemia, low urinary flow rate and urinary concentration defects, all of which favour growth and multiplication of bacteria. Furthermore, UTIs can lead to more deterioration of renal function in patients with CRF due to many factors including septicaemia, fluid depletion leading to hypotension and reduced cardiac output with reduced renal perfusion and obstruction of the urinary tract by sloughed papillae, stones or plugs of pus.