This wonderful poem was shared with us and perfectly encompasses the type of compassion we expect from our caregivers when dealing with clients suffering from dementia:

Do not ask me to remember,
Don't try to make me understand,
Let me rest and know you're with me, 
Kiss my cheek and hold my hand.

I'm confused beyond your concept,
I am sad, and sick, and lost.
All I know is that I need you
To be with me at all cost.

Do not lose your patience with me,
Do not scold or curse or cry.
I can't help the way I'm acting,
Can't be different though I try.  

Just remember that I need you,
That the best of me is gone,
Please don't fail to stand beside me,
Love me 'til my life is done.