When I was a medical student on my neurology rotation, I was sent down to radiology because the radiology attending who was doing an LP didn't want to take more than 6 cc out of the patient's spine, because he was worried the patient would get a headache. So in order to absolve himself of responsibility, he said that if neuro wanted more than 6 cc, we physically had to go down and take out the rest of the fluid ourselves. Specifically, I had to go down there and hold a test tube to catch the fluid (over 6 cc) dripping out of the patient's spine.
As soon as I got down there, the rad attending was acting like an asshole. After much ado and my having to page my attending, he agreed to let us take out 25 cc total, as long as I was the one taking it out.
So the radiology resident got the tube in his spine and got out the first 6 cc. He hands me the test tube and the attending said to me, "OK, we're all leaving now."
I looked at him with sheer panic and I was like, "Wait!" I didn't know what could possibly go wrong with the patient during this procedure, but considering I knew very little, and the attending felt it was dangerous enough that he didn't want to be there, I didn't want to be alone.
The resident was sympathetic and asked the attending if he could stay with me. But the attending was insistent that nobody be in the room with me. I said, "What if something goes wrong? How do I get it out?" The answer to that question was that they would be a few doors down and the patient's son could go get them. Finally, the resident told me quietly that he'd come back before I was done and remove the tube from the spine.
It baffles me that an attending could act that way. I was shocked and I felt awful for the patient who had to hear this exchange.