Key result
Among patients with mechanical valve prostheses, 61.8% demonstrated moderate knowledge of their oral anticoagulant therapy, with 40.9% unable to name a factor altering INR and 37.3% unaware of their target INR.
Why the study?
What is the level of knowledge concerning chronic oral anticoagulant therapy among patients with mechanical valve prostheses?
Cross-Sectional (n=110)
Yes
What is the level of knowledge concerning chronic oral anticoagulant therapy among patients with mechanical valve prostheses?
The majority of patients with mechanical valve prostheses have only moderate knowledge about their oral anticoagulant therapy, highlighting a need for improved patient education.
Adherence to chronic Oral Anticoagulant Therapy (OAT) is directly related to patients' understanding of the therapy. This study verified the knowledge of patients with mechanical valve prostheses concerning OAT. This is a contemporary cross-sectional study, the sample is composed of patients with mechanical valve prostheses (MVP) in outpatient follow-up. A 10-question instrument was used; answers were 'know' (1 point), 'know partially' (half point), or 'do not know' (zero). Patients were grouped according to the result obtained: ≤ 4 points was considered insufficient knowledge; > 4 ≤ 8 equated to moderate knowledge; and > 8 was considered appropriate knowledge. Of the 110 patients, 61.8% presented moderate knowledge, 40.9% were not able to name at least one factor that may alter the INR (International Normalized Ratio) and 37.3% were not able to report their INR target range. The majority of patients presented moderate knowledge concerning the treatment. Strategies to improve knowledge on the topic should be implemented to minimize risks.
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Rocha et al. (2010) conducted a cross-sectional in Mechanical valve prostheses requiring chronic oral anticoagulant therapy (n=110). Chronic oral anticoagulant therapy was evaluated on Knowledge score regarding oral anticoagulant therapy. Among patients with mechanical valve prostheses, 61.8% demonstrated moderate knowledge of their oral anticoagulant therapy, with 40.9% unable to name a factor altering INR and 37.3% unaware of their target INR.
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