OK I'll have a go,don't know if it's the same in US though.
If you are assigned a patient ,check their care plan.Are they ambulant?do they use a walking aid? Can they adjust clothing independently?Can they perform own personal hygiene?
When you enter a room, is the area between the toilet and the patient clear of obstructions? Is there everything you require in the tiolet,wipes,disposal bags,fresh pads etc?
Speak to patient!explain what you are doing.Stand them up,do they seem stable?Start moving,is their gait stable?do they shuffle,watch for tripping,is there a raised area at toilet door? If they have Parkinson's they will "Dance"at the door because of change in flooring(our rooms are carpeted but the toilets are washable vinyl)encourage them slowly across this.Is there enough room for you and them to enter door together?Again our doors are double so that they can be fully opened giving you more space.
Once in toilet assist with clothing if required.A lot of elderly men try and stand to pee but they don't quite have the pressure to hit the toilet!Encourage them to sit if possible and make sure penis is actually in the toilet!
You should have on your gloves and apron etc and get a bag ready for the soiled pad if there is one.
If it is safe to do so leave them to perform,evacuating is not really a spectator sport!

Once they have finished either they clean or you do!Assist with clothing,replacing pads etc and then wash their hands.Finally get them back to their seat.I think it takes longer to write this than actually do it!but I hope you get the general idea!
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