First time, adenosine failed twice to bring down 180+ pulse.
Diltiazem given, and worked. Sent home with
extended-release 120mg diltiazem. Experienced breakthrough arrhythmias and eventual return to tachycardia 170bpm that lasted 8 hours before heading to the ER again. Given fast-acting diltiazem 60mg, which seems to be working so far, although I'm still experiencing arrhythmias. Cardiologist preliminarily diagnosed AVNRT and recommended ablation asap.