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The Secondary Prevention of Stroke in Patients With Atrial Fibrillation

David G. Sherman, MD; Robert G. Hart, MD; J. Donald Easton, MD
[+] Author Affiliations

Accepted for publication Nov 8, 1984.

Reprint requests to Division of Neurology, Department of Medicine, University of Texas Health Science Center, San Antonio, TX 78284 (Dr Sherman).


Arch Neurol. 1986;43(1):68-70. doi:10.1001/archneur.1986.00520010062024
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Ischemic stroke in patients with nonrheumatic atrial fibrillation (AF) is common. No one knows how optimally to prevent its recurrence.

About 15% of all ischemic strokes occur in patients with AF.13 Conversely, about 35% of patients with AF will experience ischemic stroke during their lifetime.4-6 In patients with AF who have experienced an initial stroke, 20% or more will experience recurrent brain infarction within one year (Table 1). Hence, the dilemma of secondary-stroke prevention in patients with AF is a common one.

Not all ischemic strokes in patients with AF are caused by cardiogenic embolism, since cerebrovascular atherosclerosis often coexists in elderly patients with AF. The fraction of these strokes due to cardiogenic embolism is uncertain, as clinical and even autopsy data are discrepant (Table 2). All causes of nonrheumatic AF seem to share a similar embolic potential, with the common denominator of stasis within the left atrium

REFERENCES

Wolf PA, Dawber TR, Thomas HE, et al:  Epidemiologic assessment of chronic atrial fibrillation and risk of stroke: The Framingham Study . Neurology 1978;;28:973-977.
Norris JW, Froggatt GM, Hachinski VC:  Cardiac arrhythmias in acute stroke . Stroke 1978;; 9:392-396.
Greenland P, Knopman DS, Mikell FL, et al:  Echocardiography in diagnostic assessment of stroke . Ann Intern Med 1981;;95:51-53.
Fisher CM:  Reducing risks of cerebral embolism . Geriatrics 1979;;34:59-66.
Sherman DG, Goldman L, Whiting RB, et al:  Risk of thromboembolism in patients with atrial fibrillation . Arch Neurol 1984;;41:708-710.
Hinton RC, Kistler JP, Fallon JT, et al:  Influence of etiology of atrial fibrillation on incidence of systemic embolism . Am J Cardiol 1977;;40:509-513.
Sage JI, VanUitert RL:  Risk of recurrent stroke with atrial fibrillation: Differences between rheumatic and arteriosclerotic heart disease . Stroke 1983;;14:537-540.
Wolf PA, Kannel WB, McGee DL, et al:  Duration of atrial fibrillation and imminence of stroke: The Framingham Study . Stroke 1983;; 14:664-667.
Darling RC, Austin WG, Linton RR:  Arterial embolism . Surg Gynecol Obstet 1967;;124:106-114.
Hart RG, Coull BM, Hart D:  Early recurrent embolism associated with nonvalvular atrial fibrillation: A retrospective study . Stroke 1983;;14:688-693.
Britton M, Gustafsson C:  Nonrheumatic atrial fibrillation as a risk factor for stroke . Stroke 1985;;16:182-188.
Mohr JP, Caplan LR, Melski JW, et al:  The Harvard Cooperative Stroke Registry: A prospective registry . Neurology 1978;;28:754-762.
Jorgensen L, Torvik A:  Ischemie cerebrovascular diseases in an autopsy series: Part I . J Neurol Sci 1966;;3:490-509.
Bar-Sela S, Ehrenfeld M, Eliakim M:  Arterial embolism in thyrotoxicosis with atrial fibrillation . Arch Intern Med 1981;;141:1191-1192.
Close JB, Evans DW, Bailey SM:  Persistent lone atrial fibrillation: Its prognosis after clinical diagnosis . J R Coll Gen Pract 1979;;29:547-549.
Harrison MJG, Marshall J:  Atrial fibrillation, TIAs and completed strokes . Stroke 1984;; 15:441-442.
Forfar JC:  Prediction of hemorrhage during long-term oral coumarin anticoagulation . Am Heart J 1982;;103:445-447.
Whisnant JP, Cartlidge NE, Elveback LR:  Carotid and vertebral-basilar TIA: Effect of anticoagulants, hypertension and cardiac disorders on survival and stroke occurrence . Ann Neurol 1978;;3:107-115.
Nunez L, Aguado MG, Larrea JL, et al:  Prevention of thromboembolism using aspirin after mitral valve replacement with porcine bioprosthesis . Ann Thorac Surg 1984;;37:84-87.
Kelley RE, Berger JR, Alter M, et al:  Cerebral ischemia and atrial fibrillation . Neurology 1985;;35:938-939.
Santamaria J, Graus F, Peres J:  Cerebral embolism and anticoagulation . Neurology 1983;; 33:1104.
Cerebral Embolism Study Group:  Immediate anticoagulation of embolic stroke: Brain hemorrhage and management options . Stroke 1984;;779-789.
Cerebral Embolism Study Group:  Immediate anticoagulation of embolic stroke: A randomized trial . Stroke 1983;;14:668-676.

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Wolf PA, Dawber TR, Thomas HE, et al:  Epidemiologic assessment of chronic atrial fibrillation and risk of stroke: The Framingham Study . Neurology 1978;;28:973-977.
Norris JW, Froggatt GM, Hachinski VC:  Cardiac arrhythmias in acute stroke . Stroke 1978;; 9:392-396.
Greenland P, Knopman DS, Mikell FL, et al:  Echocardiography in diagnostic assessment of stroke . Ann Intern Med 1981;;95:51-53.
Fisher CM:  Reducing risks of cerebral embolism . Geriatrics 1979;;34:59-66.
Sherman DG, Goldman L, Whiting RB, et al:  Risk of thromboembolism in patients with atrial fibrillation . Arch Neurol 1984;;41:708-710.
Hinton RC, Kistler JP, Fallon JT, et al:  Influence of etiology of atrial fibrillation on incidence of systemic embolism . Am J Cardiol 1977;;40:509-513.
Sage JI, VanUitert RL:  Risk of recurrent stroke with atrial fibrillation: Differences between rheumatic and arteriosclerotic heart disease . Stroke 1983;;14:537-540.
Wolf PA, Kannel WB, McGee DL, et al:  Duration of atrial fibrillation and imminence of stroke: The Framingham Study . Stroke 1983;; 14:664-667.
Darling RC, Austin WG, Linton RR:  Arterial embolism . Surg Gynecol Obstet 1967;;124:106-114.
Hart RG, Coull BM, Hart D:  Early recurrent embolism associated with nonvalvular atrial fibrillation: A retrospective study . Stroke 1983;;14:688-693.
Britton M, Gustafsson C:  Nonrheumatic atrial fibrillation as a risk factor for stroke . Stroke 1985;;16:182-188.
Mohr JP, Caplan LR, Melski JW, et al:  The Harvard Cooperative Stroke Registry: A prospective registry . Neurology 1978;;28:754-762.
Jorgensen L, Torvik A:  Ischemie cerebrovascular diseases in an autopsy series: Part I . J Neurol Sci 1966;;3:490-509.
Bar-Sela S, Ehrenfeld M, Eliakim M:  Arterial embolism in thyrotoxicosis with atrial fibrillation . Arch Intern Med 1981;;141:1191-1192.
Close JB, Evans DW, Bailey SM:  Persistent lone atrial fibrillation: Its prognosis after clinical diagnosis . J R Coll Gen Pract 1979;;29:547-549.
Harrison MJG, Marshall J:  Atrial fibrillation, TIAs and completed strokes . Stroke 1984;; 15:441-442.
Forfar JC:  Prediction of hemorrhage during long-term oral coumarin anticoagulation . Am Heart J 1982;;103:445-447.
Whisnant JP, Cartlidge NE, Elveback LR:  Carotid and vertebral-basilar TIA: Effect of anticoagulants, hypertension and cardiac disorders on survival and stroke occurrence . Ann Neurol 1978;;3:107-115.
Nunez L, Aguado MG, Larrea JL, et al:  Prevention of thromboembolism using aspirin after mitral valve replacement with porcine bioprosthesis . Ann Thorac Surg 1984;;37:84-87.
Kelley RE, Berger JR, Alter M, et al:  Cerebral ischemia and atrial fibrillation . Neurology 1985;;35:938-939.
Santamaria J, Graus F, Peres J:  Cerebral embolism and anticoagulation . Neurology 1983;; 33:1104.
Cerebral Embolism Study Group:  Immediate anticoagulation of embolic stroke: Brain hemorrhage and management options . Stroke 1984;;779-789.
Cerebral Embolism Study Group:  Immediate anticoagulation of embolic stroke: A randomized trial . Stroke 1983;;14:668-676.

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