Hey,
My scrub tech asked me question the other day which I didn't have an answer for...So we did a tracheostomy on this extremely sick guy. He was superhigh risk - 500 pounds plus, vented..and all that jazz. So finally we were done with surgery...surgeon left, resident left...Anesthesia is all nervous cause they decided to put central line and cardiovert him postoperatively. I was cool with that but then tech asked me if she should stay sterile for Central line and cardioversion...I was like...just keep the back table sterile in case...Tech said that some nurse like scrub to stay sterile and others don't care.
Luckily for the patient anesthesia fixed him allright, HR

became normal and central line was put like in the books.