Family Physician Prescribing Practices and Perspectives on Shared Decision-Making Regarding the Use of Oral Anticoagulants for Stroke Prevention in Patients 75 Years or Older with Atrial Fibrillation

Introduction: Atrial Fibrillation (AF) is common in older adults, yet guideline-recommended oral anti-coagulants (OACs) for stroke prevention are underused in this population. With a growing population of older adults at risk of AF seeking primary care, the objective of the study was to determine the management practices and perspectives of family physicians on the initiation of OACs for stroke prevention in AF patients 75 years or older, including their engagement of patients in shared decision-making. Methods: This was an online survey of family physicians affiliated with a Primary Care Network in Alberta, Canada. Results: Patient’s risk (of falls, bleeding, or stroke) was the most common factor (17/20, 85%) physicians considered when deciding to initiate OAC in older adult patients with AF. Physicians used the CHADS2VASC (13/14, 93%) and HASBLED (11/15, 73%) tools to determine stroke and bleeding risks, respectively. Majority (11/15, 73%) of the physicians agreed that they feel confident initiating OAC for AF patients ≥75, while 20% (3/15) were neutral. All physicians agreed that their patients participated in shared decision-making to initiate OAC for stroke prevention. Conclusion: Family physicians strongly consider patient risks and utilize risk-assessment tools when initiating OAC in older adults with AF. Despite all physicians reporting the use of shared decision-making and that their patients were educated on the indications for OAC, confidence in initiating treatment was variable. Further exploration into factors impacting physician confidence is needed.