Walking into the beginning induction of a case L4/5, L5/S1 interbody fusion and plating.

NKDA
Meds: Lisinopril, Metoprolol, Lasix, Digoxin, Cardura. Coumadin, Plavix

PMH: AFib(current), Nonischemic cardiomyopathy, Diffuse 3 vessel dz (20-40%), EF 45%, HTN

ROS: Elderly 72 yo male, 6 0', 102 kg, no acute distress Denies SOB, PND, orthnopnea, MI, DM, GERD. BP preop 178/89, HR 92. 500 ml LR preop bolus in .

Student induces using 140 Prop/50 lido/100 mcg fent. BP down to 100/49 HR 88...Surgeon asked to go prone...BP then reads 72/28...pulse ox not reading, Hr 95...Student gives 5 mg ephedrine and says 'OK, ready to turn'

What would your comments/actions be at this point?