Review Question - QID 211754

Your 68-year-old neighbor, a retired military veteran, was diagnosed with non-valvular atrial fibrillation two years ago. His other chronic medical conditions include hypertension and diabetes mellitus. He has never had any surgery in the past. His heart rate has been appropriately controlled with calcium channel blockers. As a caring hand surgeon, you are concerned that he has the possibility of developing upper extremity thromboembolism secondary to his atrial fibrillation. What is the most likely treatment to reduce the likelihood of thromboembolism in the hand because of his specific cardiac condition?