make sure you reverse course on the procedure turn side.
know the terrain
if a holding pattern is depicted along with the above instructions, there is probably a darn good reason...mountain for example.
I get a kick out of your european terms, yet in one of the diagrams it is called, wwhat we call it: a procedure turn
45/180 reversal indeed...though you could probably do a 90/270 if you like.
also, the holding pattern is nice as you get a chance to determine the winds...assuming you don't have a magic box doing the thinking for you.