Atrial fibrillation may occur in all the following conditions except
Cardioversion within 48 h of the onset of AF is common practice in patients who have not been anticoagulated, provided that they are not at high risk for stroke due to a prior history of embolic events, rheumatic mitral stenosis, or hyperophic cardiomyopathy with marked left atrial enlargement. Ref Harrison 20th edition pg 1432
C.V.S
Mitral stenosis
Hypothyroidism
Dilated cardiomyopathy
Mitral regurgitation
Hypothyroidism