Factors Influencing Primary Care Physicians’ Prescribing Behavior of Anticoagulant Therapy for the Management of Patients With Non-valvular Atrial Fibrillation in the Community: a Qualitative Research Study

Abstract

Background: Oral anticoagulant therapy use in patients with atrial fibrillation (AF) remains suboptimal despite the availability of both warfarin and non-vitamin K antagonist oral anticoagulants (NOACs). Primary care physicians’ (PCP) decision-making to initiate and select appropriate anticoagulant medication is pivotal in reducing complications among patients with AF.Aim: This study explored the factors influencing PCPs’ decision-making in anticoagulant initiation and adjustment for patients with non-valvular AF. Design of study: Qualitative research based on the theoretical framework of the Generalist Wheel of Knowledge, Understanding and Inquiry. Method: In-depth interviews or focus group discussions were conducted with 27 PCPs in general practice in urban Singapore. The audio-recordings were transcribed, audited and coded to identify themes, which are framed according to the “clinician”, “patient”, “medical condition and treatment” and “healthcare system and policy” domains.Results: Personal training and experience with anticoagulant therapy; understanding patient risk-stratification; AF detection during clinical practice; medication cost; clinical support services for anticoagulation monitoring and constraints in existing care model influenced PCPs in their anticoagulant prescription. PCPs preferred to seek guidance from cardiologists in managing patients with newly diagnosed AF and attempted to engage their patients in decision-making regarding anticoagulant therapy. They perceived sub-specialized primary care clinics focusing on AF co-management with cardiologists as an ideal setting for initiation and maintenance of anticoagulant therapy.Conclusion: PCPs’ decisions on anticoagulant therapy is influenced by personal attributes, patients, clinical presentations, anticoagulant properties and healthcare system. Their proposed care model to address the barriers awaits feasibility and acceptance assessment in future research.