Hi well come to HCM.
It seems you are asking about leucocyte+++ in urine. It means lot of pus cells are there
in urine. It is suggestive of urinary tract infection
.Your father is 74yrs so likely to have
which can give recurrent urinary tract infection.drugs like levofloxacin
can be used foe this. Thanks. He should drink lot of water as well.