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Published on: February 26, 2013
[What Are the Realities of Prescription and Control of Antithrombotic Therapy in Atrial Fibrillation in Outpatient
R M Linchak1, O G Kompaniets1, A M Nedbaykin1
11National Research Center for Preventive Medicine, Moscow, Russia; 2Kuban State Medical University, Krasnodar, Russia; 3Cardiologic Dispensary of Bryansk Region, Bryansk, Russia.
Insights
Anticoagulant use for stroke prevention in Russian atrial fibrillation (AF) patients is low, with suboptimal warfarin monitoring. Effective anticoagulation is achieved in only 12.6% of warfarin users.
Area of Science:
- Cardiology
- Pharmacology
- Public Health
Context:
- Nonvalvular atrial fibrillation (AF) poses a high risk for stroke and systemic embolism.
- Ambulatory care settings in Russia were examined for antithrombotic prescribing patterns.
- Patient documentation from 648 outpatients across Moscow, Krasnodar, and Bryansk was analyzed.
Purpose:
- To evaluate the utilization of anticoagulants and antiplatelet agents in Russian AF patients.
- To assess the quality of anticoagulation control, particularly with warfarin therapy.
- To identify gaps in antithrombotic management for stroke prevention in AF.
Summary:
- Overall anticoagulant use in high-risk AF patients was low (30.9%), with novel oral anticoagulants (NOACs) used in only 5.7%.
- A significant proportion received antiplatelet therapy (53.6%) or no antithrombotic treatment (13.4%).
- Among warfarin users, only 19.6% monitored international normalized ratio (INR) monthly. Of those with regular monitoring, only 44% maintained INR within the therapeutic range for over 60% of the time, resulting in effective anticoagulation for only 12.6%.
Impact:
- Findings highlight a critical need to improve anticoagulant prescribing and monitoring for stroke prevention in AF patients in Russia.
- Suboptimal warfarin management and low NOAC use suggest potential for increased stroke risk in this population.
- The study underscores the importance of adherence to guidelines for effective anticoagulation in AF management.
Abstract:
We analyzed documentation of 648 outpatients with nonvalvular atrial fibrillation receiving ambulatory care in 3 cities in Russia (Moscow, Krasnodar, and Bryansk). Frequency of use of any anticoagulant in patients with AF and high risk of stroke and systemic embolism was low (30.9% overall, novel oral anticoagulants - 5.7%). But portions of patients who according to documents received antiaggregants or no antithrombotic drugs at all were high (53.6 and 13.4%, respectively). Among patients receiving warfarin only 19.6% checked international normalized ratio (INR) every month while 75% did it once in 3 months or rarer or did not control this parameter at all. Among patients in whom INR control was sufficiently regular only in 44% percentage of time in the therapeutic range exceeded 60%. Thus persistent effective anticoagulation was achieved only in 12.6% of warfarin treated outpatients.
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