Atrial Fibrillation (AFib) Support Group
Atrial fibrillation (AF or afib) is an abnormal heart rhythm (cardiac arrhythmia) which involves the two small, upper heart chambers (the atria). Heart beats in a normal heart begin after electricity generated in the atria by the sinoatrial node spread through the heart and cause contraction of the heart muscle and pumping of blood.

However, I'm skeptical about some of the things the article says could trigger an arrhythmia and prevent them.
I think there are other things going on during atrial fibrillation that don't necessarily involve the SA node or involve speeding it up. In other words, I think atrial fibrillation could start without the SA node being triggered to increase the heart rate. Atrial fibrillation is when the depolarization waves propagate in multiple circles (spiral waves) in the atria rather than flowing evenly from the SA node throughout the atria and to the AV node and conducting down to the ventricles.
Full disclosure: I'm not an MD, I've just read a lot of research in searching for causes of my own AF episodes. And I've taken anatomy & physiology and I'm in an allied health care school program.
Thanks for sharing.
The point that stands out the most is the relationship of inflammation and homocysteine levels to afib, something which was instrumental in controlling my AF and PVCs. Interestly enough it was high doses of Vit C that I attribute much success to. I did notice also that Dr Pauling is referenced, one of the pioneers of natural cancer cures who challenged the ridiculously low doses of C and B vitamins by the federal RDA guidelines.
Buddy makes a good point. "other things going on during atrial fibrillation that don't necessarily involve the SA node or involve speeding it up", which I can whole heartily agree with. Most of my episodes occurred with a HR of 60-85. I had a slow but irregular HR.
Keep in mind however that this and even my regimen of supplements to control afib, does not get to the root cause, something I am ever seeking , where is this inflammation coming from? I suspect several things and have eliminated all but one, possibly the main culprit, a root canal on the "heart" tooth.