[Flabbibulin]

From what I have read, he has had several episodes now and has even been electrically cardioverted before. His still being on the roster isn't negligence by the team doctors, but simply an indication that A Fib is generally a manageable condition. I am sure he underwent extensive testing, specifically an echocardiogram, after the irregularity was picked up on the EKG to make sure there were not any structural heart issues.

A Fib is typically treated with beta blockers or anti-arrhythmial drugs for those dealing with Lone A Fib, and anticoagulants for those that have chronic. Anticoagulants are usually not a great idea for those in rough sports, and beta blockers can limit athletic performance because of the way it limits resting and maximum heart rate. This is why ablation is a great option for pro athletes. Strange that he hasn't undergone this procedure already- its possible that he was not a suitable candidate. Essentially, electrophysiologists must be able to replicate the arrhythmia in order to zap the regions of the heart causing the problem. Perhaps his initial episodes were so mild that they didn't think they would be able to replicate them in an ablation procedure.

What is fairly rare is passing out from A Fib. While passing out from V Fib is a guarantee, I don't think it is terribly common to pass out while in A Fib- many patients experience no symptoms other than the irregular heartbeat.

A Fib is often brought on from electrolyte imbalance, specifically low potassium. This can occur from sweating heavily, which obviously happens for pro athletes.

edit- found a quote by Stars GM from September that mentioned that Peverley did have a procedure done in the summer to correct the issue. Doesn't say if that procedure was a cardioversion or an ablation. Either way, many A Fib patients require more than one ablation, and a cardioversion is really only a temporary fix.