Middle-aged male with severe MS having general anaesthesia for repair of fractured ulna / radius. 10 minutes into the case you notice a tachyarrythmia with his HR 130 and BP 70. He is normally in sinus. What do you do?
A. Adenosine
B.Amiodarone
C. Shock
D. Volume
E. Metaraminol
Answer: C