@marybird I couldn't possibly agree more. We don't know this unfortunate person's medical circumstances, any ongoing or recent diagnosis, what has been prescribed, in what dose, and so on. Eliquis gets blamed because it has just been added to the person's daily regimen, and if things go sour, it must be the Eliquis. Post hoc, ergo propter hoc, which is the old fallacy. Not that such reasoning isn't often right, just that it's not always right. Eliquis can't stop an arrhythmia...it's not designed to do that. All it does is retard the clotting mechanism. It sounds to me that this person is having some kind of cardiac disregulation which apixaban cannot help...or hinder.