Una Ørvim Sølvik1, Elisabeth Løkkebø2, Ann Helen Kristoffersen2,3, Ellen Brodin4, Maria Averina5, Sverre Sandberg1,2,3. 1. Department of Global Public Health and Primary Care, Faculty of Medicine, University of Bergen, Bergen, Norway. 2. Norwegian Organization of Quality Improvement of Laboratory Examinations (Noklus), Haraldsplass Deaconess Hospital, Bergen, Norway. 3. Department of Medical Biochemistry and Pharmacology, Haukeland University Hospital, Bergen, Norway. 4. Division of Medicine, Department of Hematology, Akershus University Hospital, Lørenskog, Norway. 5. Department of Laboratory Medicine, The University Hospital of North Norway, Tromsø, Norway.
Abstract
BACKGROUND: Studies from several countries show that self-management of vitamin K antagonist (e.g., warfarin) therapy reduce the risk of complications compared with conventional management. OBJECTIVES: The aim of this study was to investigate the quality of warfarin management when patients were transferred from conventional management to self-management in Norway. In addition, quality of life (QoL) before and after 2 years of warfarin self-management was investigated. MATERIALS AND METHODS: The study was longitudinal with a retrospective and prospective design where 126 patients on conventional management of long-term warfarin therapy underwent a 21-week training program of warfarin self-management followed by 2 years of self-management. The outcomes of the study were time in therapeutic range (TTR), the variance of international normalized ratio (INR) values, extreme INR values (INR ≤ 1.5 and ≥ 5), complications, and QoL, comparing the 2-year period of the conventional management with the 2-year period with the self-management. RESULTS: The median TTR was higher during self-management compared with conventional management (78.1% vs. 65.9%, respectively, p < 0.001). In addition, self-management resulted in lower INR variance (0.22 vs. 0.33, p < 0.001), reduced percentage of extreme INR values (1.8% vs. 5.3%, p < 0.001), less complications (0% vs. 5.6%), and improved QoL (p < 0.001) compared with conventional management. CONCLUSION: We used five different measures and found improved quality of warfarin self-management 2 years after patients were transferred from the conventional management. Georg Thieme Verlag KG Stuttgart · New York.
BACKGROUND: Studies from several countries show that self-management of vitamin K antagonist (e.g., warfarin) therapy reduce the risk of complications compared with conventional management. OBJECTIVES: The aim of this study was to investigate the quality of warfarin management when patients were transferred from conventional management to self-management in Norway. In addition, quality of life (QoL) before and after 2 years of warfarin self-management was investigated. MATERIALS AND METHODS: The study was longitudinal with a retrospective and prospective design where 126 patients on conventional management of long-term warfarin therapy underwent a 21-week training program of warfarin self-management followed by 2 years of self-management. The outcomes of the study were time in therapeutic range (TTR), the variance of international normalized ratio (INR) values, extreme INR values (INR ≤ 1.5 and ≥ 5), complications, and QoL, comparing the 2-year period of the conventional management with the 2-year period with the self-management. RESULTS: The median TTR was higher during self-management compared with conventional management (78.1% vs. 65.9%, respectively, p < 0.001). In addition, self-management resulted in lower INR variance (0.22 vs. 0.33, p < 0.001), reduced percentage of extreme INR values (1.8% vs. 5.3%, p < 0.001), less complications (0% vs. 5.6%), and improved QoL (p < 0.001) compared with conventional management. CONCLUSION: We used five different measures and found improved quality of warfarin self-management 2 years after patients were transferred from the conventional management. Georg Thieme Verlag KG Stuttgart · New York.
Authors: María Asunción Esteve-Pastor; Martín Ruiz-Ortiz; Javier Muñiz; Inmaculada Roldán-Rabadán; Déborah Otero; Ángel Cequier; Vicente Bertomeu-Martínez; Lina Badimón; Manuel Anguita; Gregory Y H Lip; Francisco Marín Journal: Front Cardiovasc Med Date: 2022-05-02