Hello and welcome to HCM.
Thank you for your query.
Depending on what kind of procedure, we could be able to decide. Although not of any serious concern, it is best you consult a urologist
for the same.
It could take sometime for your brother to regain control over his bladder after the procedure. Do not worry, as long as the urine is draining, it should be of no immediate concern.
Also depending on the time of surgery, for which he would have been administered anesthesia
, it takes some time for the anesthesia to wear out. In such cases it is best to place the patient on a catheter for at least 1-2 days after surgery.
I hope I have succeeded in answering your questions, you could write back to me anytime for further clarifications.