Journal
BRITISH JOURNAL OF CLINICAL PHARMACOLOGY
Volume 88, Issue 11, Pages 4688-4707Publisher
WILEY
DOI: 10.1111/bcp.15437
Keywords
direct oral anticoagulants; coumarin derivatives; nonadherence; oral anticoagulants; thromboembolism
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Funding
- Coordenac~ao de Aperfeicoamento de Pessoal de Nivel Superior [001]
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Nonadherence to oral anticoagulant treatment is a public health issue associated with high mortality rates. Factors associated with nonadherence to therapy with coumarin derivatives or direct oral anticoagulants are heterogeneous and variable. Most studies lack detailed information on the concepts and methods used to assess nonadherence.
Nonadherence to thromboprophylaxis treatment with oral anticoagulants (OAC) is a public health problem and may be associated with high mortality rates. We sought to synthesize the factors associated with nonadherence to therapy with coumarin derivatives or direct oral anticoagulants. A systematic review was performed at electronic databases Medline, Embase, CINAHL, Lilacs and grey literature (Google Scholar, MedNar, OpenGray, ProQuest Dissertations and Theses, and hand search). This study was conducted according to Cochrane's method and PRISMA. The registration on PROSPERO is CRD42020223555. Overall, 1270 studies were identified and nine studies were selected for this review. In hand searching, 77 studies were found, but none included. The associated factors with nonadherence were heterogeneous, and some factors were described as both risk and protection for nonadherence, with few variables showing consistent results among the studies. Variables reported only as risk factors were male sex, hospitalization, Charlson score and bleeding, while white race, CHA(2)DS(2)VASc (score range 2-9) and polypharmacy were reported only as protective factors. Most studies did not present details in the description of concepts and methods to assess nonadherence. In clinical practice, the knowledge on factors associated with nonadherence is helpful to identifying patients at higher risk of complications that would benefit from individualized interventions.
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