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Anticoagulation Choice and Timing in Stroke Due to Atrial Fibrillation: A Survey of US Stroke Specialists (ACT-SAFe).
Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association 2020 October
OBJECTIVE: Risk of early recurrent ischemic stroke in patients with atrial fibrillation may be high. ASA/AHA guidelines provide imprecise recommendations on the timing and anticoagulant choice for this indication. We assessed current opinions of stroke neurologists.
METHODS: Case scenarios describing patients with acute ischemic stroke (AIS) due to paroxysmal atrial fibrillation (AF) were presented to US board-certified stroke neurologists in an internet-based questionnaire. Questions assessed timing and choice of anticoagulation for secondary stroke prevention, factors prompting earlier anticoagulation, reasons for specific anticoagulant choice, and alternatives to anticoagulation in ineligible patients. Open-ended comments were also solicited.
RESULTS: Responses were available from 238/1239 stroke neurologists surveyed. In patients with small AIS without hemorrhagic transformation (HT), 51% elected to start anticoagulation within 96 hours. With increased stroke severity and asymptomatic HT, only 29% and 26% respectively chose to anticoagulate within 7 days. Few requested stability imaging before starting anticoagulation. With symptomatic HT the majority (79%) waited >14 days. 93% would anticoagulate earlier if left atrium/left atrial appendage or acute left ventricular thrombi, or mechanical heart valve were present. Direct oral anticoagulants (DOACs) were the preferred anticoagulation strategy (64%), and the remaining 38% preferred Warfarin. Aspirin was preferred by 57% in anticoagulation ineligible.
CONCLUSION: Apart from AIS with symptomatic HT, there is a remarkable lack of consensus among stroke neurologists regarding the timing of anticoagulation for secondary stroke prevention in patients with AIS due to PAF. DOACs are the preferred anticoagulation strategy. More studies are required to clarify anticoagulant management in this patient population.
METHODS: Case scenarios describing patients with acute ischemic stroke (AIS) due to paroxysmal atrial fibrillation (AF) were presented to US board-certified stroke neurologists in an internet-based questionnaire. Questions assessed timing and choice of anticoagulation for secondary stroke prevention, factors prompting earlier anticoagulation, reasons for specific anticoagulant choice, and alternatives to anticoagulation in ineligible patients. Open-ended comments were also solicited.
RESULTS: Responses were available from 238/1239 stroke neurologists surveyed. In patients with small AIS without hemorrhagic transformation (HT), 51% elected to start anticoagulation within 96 hours. With increased stroke severity and asymptomatic HT, only 29% and 26% respectively chose to anticoagulate within 7 days. Few requested stability imaging before starting anticoagulation. With symptomatic HT the majority (79%) waited >14 days. 93% would anticoagulate earlier if left atrium/left atrial appendage or acute left ventricular thrombi, or mechanical heart valve were present. Direct oral anticoagulants (DOACs) were the preferred anticoagulation strategy (64%), and the remaining 38% preferred Warfarin. Aspirin was preferred by 57% in anticoagulation ineligible.
CONCLUSION: Apart from AIS with symptomatic HT, there is a remarkable lack of consensus among stroke neurologists regarding the timing of anticoagulation for secondary stroke prevention in patients with AIS due to PAF. DOACs are the preferred anticoagulation strategy. More studies are required to clarify anticoagulant management in this patient population.
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