Also, not saying you do, but illegal drug use
can be major problem for people with
normal hearts, rhythm wise, but with
a known arrhythmia, engaging in illegal drug use is asking for major problems.
Also, when I go to the dentist, since I have an arrhythmia, I always ask that they use a local anesthetic (like Novocain) without Epinephrine, which is related to adrenaline. Epinephrine helps to sustain the anesthetic, but can cause heart rhythm problems.