The finding that patients with transient-ischemia-induced AF represents a group with markedly higher risk of ischemic stroke is compelling. It suggests that these patients may be candidates for combined antiplatelet and anticoagulant therapy. Trials of combined therapy following MI demonstrate that this strategy reduces the rate of recurrent cardiac ischemia, stroke, or death but does carry significantly increased risk of bleeding.3-4
Bottom line: The presence of transient AF following MI represents a significant risk factor for the development of subsequent paroxysmal AF. These patients have a five-fold increased risk of ischemic stroke over the next three years and should be considered for combined antiplatelet and anticoagulant therapy.
Citations:
- Chung-Wah S, Man-Hong J, Hee-Hwa H, et al. Transient atrial fibrillation complicating acute inferior myocardial infarction: implications for future risk of ischemic stroke. Chest. 2007 Mar 30;132(1):44-49.
- Witt BJ, Ballman KV, Brown RD Jr., Meverden RA, Jacobsen SJ, Roger VL. The incidence of stroke after myocardial infarction: a meta-analysis. Am J. Med. 2006;119(4):354 e1-9.
- Van Es RF, Jonker J, Verheugt F, et al. Aspirin and Coumadin after acute coronary syndromes (the ASPECT-2 study): a randomised controlled trial. Lancet. 2002 Jul 13;360(9327):109-113.
- Hurlen M, Abdelnoor M, Smith P, et al. Warfarin, aspirin, or both after myocardial infarction. N Engl J Med. 2002 Sep 26;347(13):969-974. TH