Ah, that might indeed be it. The VTach is still an arrhythmia, even if it is sinus. And, if it is intractable, even just for now, it is best to keep the heart as calm, stable, unstressed, and in a lower rate as possible. I'm guessing you're NOT on a rate control like diltiazem or metoprolol? I was told to stop metoprolol immediately when I was placed on amiodarone for about eight weeks. I haven't actually researched it, but in my case my heart was stopping for up to eight seconds at a time. One nurse came running into the room only find me chatting with my wife. She held out the index fingers of both hands, about a foot apart, and said her monitor had showed no heart beat over yay long. !! I went on amiodarone after that, and the metoprolol was actually putting me into severe bradycardia.

I'm taking amiodarone 200 mg for my a pulse rate ablation for Afib four weeks ago, as I went into Afib four days after the procedure.