I have never worked Radiology Special Procedures.
I have done moderate sedation for GI, bronchoscopies, and a various other minor procedures.
There has always been a technician assisting the doctor with the scope, fluorscopy, passing instruments, etc. So it has always been me, a tech, and a MD.
"Ideally" a moderate sedation nurse is only responsible for giving the sedation and monitoring the patient. Of course you have to document drugs given, vital signs, etc........but you also end up at the very least accepting any specimens the tech hands to you, labeling them, noting the time, location, etc. I guess you would call that being a circulating nurse?
Is she certified for moderate sedation? She should be, and must have ACLS, access to ambu bags, airway adjuncts, etc.