What a nice hubby! I LOVE hubby's that cook! Mine did for awhile when I worked. Unfortunately he doesn't seem to anymore. I say that with a smile.
I always get the 50 mg. of benadryl along with some other meds before the infusion. It does make me very sleepy too, but like Lara, I tend to just close my eyes and not really sleep because as you say, all the machines beeping and the blood pressure cuff inflating!
I sometimes wonder why their benadryl makes me sleepier than the benadryl I take here in the evening!!!