What You Don't Want To Think To Yourself Upon Entering A Room
"Hm. Where's all that blood coming from?"
You especially don't want that to be your first thought when your patient is intubated and ventilated and Dipped and generally not terribly responsive.
Moreover, you don't want that to be your first thought, because your second thought will invariably be, "Gosh. I wonder if that blood is still coming, or if it's stopped."