Thanks for the query
It looks like you father is suffering from a urinary tract infection
which is common in elderly men and not particularly in people with kidney
failure. He needs to be treated with anti biotics like levofloxacin
for a period of 7 days or he can also be treated if the urine culture has grown an organism based on the anti biogram picture.
General condition tends to improve after one goes on dialysis
as the uremic toxins are removed from the system during dialysis
I wish you dad good health and a speedy recovery