The boredom of anticipation

So, this is my third day of 24-hour call in the past four. I'm a little bit bleary-eyed, not so much b/c I've been run off my feet, per se, but, I think, b/c of the erratic bouts of sleep. And, I think, there's a component of cabin fever, when you're stuck wandering hospital corridors for that much time in a row. Especially when nothing in particular is going on, and one is sitting around, waiting for disaster to strike...