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Published on: February 28, 2012
Drug adherence in patients taking oral anticoagulation therapy
Sebastian Ewen1, Volker Rettig-Ewen, Felix Mahfoud
1Klinik für Innere Medizin III, Kardiologie, Angiologie und Internistische Intensivmedizin, Universitätsklinikum des Saarlandes, Kirrberger Str., Geb. 40, 66421, Homburg/Saar, Germany, Sebastian.Ewen@uks.eu.
Abstract:
Oral anticoagulation has proven to reduce mortality and morbidity of thromboembolic events. One of the most important determinants of the effectiveness and safety of anticoagulation therapy is the adherence to the prescribed therapy. Vitamin K antagonists are characterized by under-utilization, a narrow therapeutic window and multiple food and drug interactions which contribute to a variable dose-response relationship with the risk of insufficient protection and/or increased bleeding risk. The "new" direct oral anticoagulants have demonstrated equal or superior protection and reduced bleeding risks compared to warfarin and are easier to use because of fixed dosing without monitoring of anticoagulation. Controlling of adherence to the direct oral anticoagulants is difficult. Therefore, continuous and regular medication intake represents a pre-requisite for achieving optimal protection. The present review aims to give an overview about the factors that affect drug adherence in patients taking oral anticoagulation drugs and discusses strategies to improve drug adherence.
Insights
Adherence to oral anticoagulation is crucial for preventing blood clots. This review explores factors impacting medication adherence and strategies to improve it for better patient outcomes.
Area of Science:
- Pharmacology
- Cardiovascular Medicine
- Patient Adherence Research
Background:
- Oral anticoagulation therapy is vital for managing thromboembolic events, reducing mortality and morbidity.
- Vitamin K antagonists (VKAs) present challenges including narrow therapeutic windows, drug-food interactions, and variable dosing, leading to risks of ineffective treatment or bleeding.
- Direct oral anticoagulants (DOACs) offer comparable or superior efficacy and safety profiles to VKAs, with fixed dosing and no routine monitoring, simplifying management.
Purpose of the Study:
- To review factors influencing medication adherence in patients undergoing oral anticoagulation.
- To discuss strategies for enhancing drug adherence in patients prescribed oral anticoagulants.
Main Methods:
- Literature review of studies on oral anticoagulation therapy.
- Analysis of factors affecting patient adherence to anticoagulants.
- Synthesis of strategies to improve medication adherence.
Main Results:
- Adherence is a critical determinant of oral anticoagulation effectiveness and safety.
- DOACs, while easier to use, present challenges in monitoring adherence.
- Continuous and regular intake is essential for optimal therapeutic benefit.
Conclusions:
- Understanding factors affecting adherence is key to optimizing oral anticoagulation therapy.
- Implementing targeted strategies can improve medication adherence and patient outcomes.
- Further research into adherence monitoring for DOACs is warranted.
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