A 76 year old man is in the CCU 2 days after an acute MI. He tells you that he had an episode of rapid pounding in the chest lasting for about 2minutes. He remains conscious throughout. What is the most likely rhythm?

The key is D. V-ectopics. [Why not VT? Non sustained VT lasts less than 30 seconds. So it is not non sustained VT. Again sustained VT causes syncope, but patient was conscious. So it is not sustained VT as well. There may be runs of V-ectopics. So the answer is D. V-ectopics].