I just started my surgery rotation. I've noticed that on all the cardiothoracic cases, CRNAs stay in the room to run the case and another non physician runs the bypass. The anesthesiologist comes in maybe twice throughout the whole thing. Is this how it normally works? Shouldn't there be an anesthesiologist in the room at all times to run the show? I can see how CRNAs can run small cases, but these CABGs/valve replacements seem too intense to rely on only CRNAs. And sometimes theres only an SRNA in the room.