Question: can paroxysmal atrial fibrillation cause a stroke?
Answer: 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.