Medicine In non-rheumatic atrial fibrillation, true is? A Paroxysmal atrial fibrillation is associated with a lower risk of stroke B The risk of stroke ii less than in atrial fibrillation due to rheumatic valve disease C Excess alcohol intake is an unlikely cause D Cardioversion may be performed without anticoagulation if a transthoracic echocardiogram is normal 💡 Explanation In non-rheumatic atrial fibrillation, true is? ✓ Correct Answer: B. The risk of stroke ii less than in atrial fibrillation due to rheumatic valve disease