It was scary. But eventually after a pediatric pulmonologist came by and changed his regimen, he got through the night without oxygen and they finally sent us home. But we still have to nebulize him at least twice a day, sometimes more, depending on how he sounds.
But we're just glad to have our boy home.
I may do a longer post later about why I'll never go to Cambridge Hospital again, but I'm a little to exhausted to re-live the whole thing in detail at the moment.