It was a very short stay......only 2 1/2 days and they found absolutely nothing. We still don't know why he needs so much oxygen at night and only needs room air to 1/2 a liter during the day. The hospital shrugged their shoulders, gave us a pat on the back and sent us home on antibiotics. For what I wonder...they didn't find a source of infection.
I moved the Pulmonologist appointment up so that I can discuss the benefit of bi-pap at night. First and foremost we have to make sure that their isn't a structural thing going on and so we are going to proceed with the bronchoscopy on Monday. He will be put under anesthesia, so pray for smooth sailing. The procedure will be at noon. Thanks again for the prayers and the nice comments. You're awesome!