Paroxysmal AFib: when problems come and go Episodes that have a clear start and stopping point qualify as paroxysmal AFib: when abnormal electrical signals and a fast heart rate begin out of the blue and stop just as suddenly, without any treatment on your part.
Read moreHow serious is paroxysmal atrial fibrillation?
In the most serious cases, paroxysmal A-fib can lead to heart failure or a stroke . According to the AHA, people who have A-fib are five times more likely to have a stroke than other people. This is because A-fib affects blood flow around the body. Blood can become static and can clot in the upper chamber of the heart.
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