Yes, Mate ... best get to kip.
I try not to confuse too much, but conditions vary from place to place, site to site, hospital to hospital.
Some have no programme at all, whilst others are well advanced in their equipment management techniques.
What I generally like to go for is:-
1) Make a proper inventory (equipment details, plus a note of condition)
2) Make a schedule for I/PM (usually by Department, at least at first) ... let's get it done at least once first!
3) Implement the schedule (this sometimes does not happen, due to objections by "management"
etc.)
4) Re-set the schedule aiming at six-months for most things, and 90 days for the sort of kit already mentioned.
5) Run the new schedule through a couple of cycles (I have usually been fired by this time, but have to hope that those I left behind carry on without me)!
6)
Then start thinking about RCM!
In short, start with fixed PM intervals, then (in light of experience) progress to sliding (hopefully lengthening) intervals in accordance with RCM.