Wow! Thank you for this information! Although I am seeing an oncologist, cardiologist, electrophysiologist, etc - NO ONE has indicated the association between CLL and cardiovascular events! Two different physicians suggested the AFIB resulted from stress after being diagnosed with CLL and needing the unrelated surgery! My oncologist already said that Flecainide conflicts with a therapy she uses, but she did not indicate any association. I will definitely read the article. Thanks again.