Dad's procedure went fine and he is currently in the post op recovery since there are no beds in ICU. Apparently, everyone in ICU is staying the same (read: not getting better) and needs to stay put. Hence, Dad has no bed per se and will most likely spend the night in the recovery area. The nurses did let Mom go back (technically, family is NOT allowed in recovery) and said that it would be more quiet there for Dad to get some rest. They also told Mom that they would get Dad up and into a chair (doctor's orders).
As I mentioned before, the procedure went well. The doctor did find a bunch of small lesions while doing the procedure and sent them to pathology. I suppose in a week or so we'll know the results.
Jason and I will be going to visit again tomorrow. I'm off to rest my exhausted self since I slept for 3 hours (between 9pm-12am) last night.