I can sympathize with you -it does add stress when it's hard to get hold of a resident or an attending. In my PACU,the EKG problems would be handled by the Anesthesia staff before the pt would be discharged from our care. Generally in the PACU setting,Anesthesia has responsibility for the patient until they have recovered from anesthesia and are transferred either to the Post Recovery Lounge (Day pts) or to their in-patient unit.
Did the PACU resident or attending not order a 12 lead plus blood levels of troponin and cardiac enzymes? In our unit that would not have been the responsibility of whichever surgical service the pt was under,but anesthesia's.
Sliding scale Insulin orders and the frequency of the chemstrips while the pt is on the floor are the responsibility of whichever surgical service is caring for the pt - or sure,and we usually try to have the service write their orders before we release the pt (primarily for continuity of pt care) - and sometimes that is a royal pain if we have ORs on hold, and all hell's breaking loose - But in an unstable pt such as this -we'd hold 'em.
Did the anesthetic service allow the pt to be discharged from PACU with no Insulin orders for the floor? In a pinch,I should think the anesthetic resident/Attending could write orders for the floor to follow until the floor tracked down their doctor - but that's not the ideal situation,is it?

jen
P.S. Kudos to you,btw, for floating to PACU...you know how we nurses
love to float...