You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 60 yrs old male with poor stream of urine, post void residual urine is 400m1, bA hydronephrosis and prostate weighing 70 g. His urea is 120 and creat 3.5. Ideal "next immediate" step : and explain in detail?
Catheterize with Foley catheter [Ref: Bailey and Love 25/e p1316, 1349; CSDT I 3/e p922/ "Catheterization is mandatory for acute urinary retention. Spontaneous voiding may return, but a catheter should be left indwelling.for 3 days while detruson tone returns."- CSDT I 3/e This is a case of bladder outlet obstruction most likely due to BHP (can also he due to ca). So the immediate next step is to drain the bladder a transurethral Foley catheter. If this fails suprapubic drainage can be done