So...apparently, we celebrated too soon. I returned this morning to find that Samuel's heart was back to being paced by the pacemaker. Some time during the night, it had converted back to a non-sinus rhythm and needed to be paced again.
I spent the entire morning and early afternoon staring at the monitor, willing it by sheer force of mind power to convert back. I must have gone, "3..2..1..NOW!" 10 different times this morning. Travis arrived to tag me out this afternoon, and soon after he arrived, he said the exact same thing. Unfortunately, it never worked for either one of us.
As of night rounds tonight, he's still being paced and we are scheduled for surgery on Tuesday for a permanent pacemaker. They may get to Tuesday and change their mind. They may not. This waiting game is far from being an exact science, so everyone just goes around wishing, and hoping, and crossing their fingers. It is quite possibly the most frustrating thing in the entire world.