Patients' Beliefs About Their Cardiovascular Medications After Acute Coronary Syndrome: A Prospective Observational Study
- PMID: 37876885
- PMCID: PMC10591128
- DOI: 10.1016/j.cjco.2023.07.004
Patients' Beliefs About Their Cardiovascular Medications After Acute Coronary Syndrome: A Prospective Observational Study
Abstract
Background: Adherence to secondary preventive pharmacotherapy after an acute coronary syndrome (ACS) is generally poor and is associated with recurrent cardiovascular events. Patients' beliefs about their medications are a strong predictor of intentional nonadherence.
Methods: This prospective, observational study assessed adult patients' beliefs about their post-ACS medications, using the Beliefs About Medicines Questionnaire (BMQ), and adherence, using the Medication Adherence Report Scale (MARS-5) at St. Paul's Hospital in Vancouver, Canada during May-December, 2022. The BMQ and MARS-5 were administered in-hospital and at 4 weeks after discharge. Outcomes included difference in BMQ necessity-concerns differential (BMQ-NCD) from hospitalization to 4-week follow-up and factors associated with the BMQ-NCD.
Results: Forty-seven participants completed the 4-week follow-up. The mean age was 64 years, and 83% were male. Most presented with a non-ST-segment-elevation ACS. No difference occurred in BMQ-NCD (7.3 vs 6.6, P = 0.29) or MARS-5 scores from discharge to 4 weeks (22.8 vs 23.7, P = 0.06); however, the BMQ specific-necessity subscale score decreased significantly (20.3 vs 18.8, P = 0.002). South Asian and Middle Eastern ethnic origins, compared to European, were associated with a higher BMQ-NCD. Part-time employment and male sex were associated with a lower BMQ-NCD.
Conclusions: Participants held favourable beliefs about their post-ACS medications, which were largely unchanged from hospitalization to 4 weeks postdischarge, except for beliefs about the necessity of taking their medications. Those of European descent, those with part-time employment, and males had the lowest BMQ-NCD. Self-reported adherence was high. Ongoing reassessment of patients' beliefs about the necessity of taking their post-ACS medications may be warranted to mitigate further decline in BMQ-NCD.
Contexte: L’adhésion à une pharmacothérapie préventive secondaire après la survenue d’un syndrome coronarien aigu (SCA) est généralement faible et associée à des manifestations cardiovasculaires récurrentes. Les croyances du patient au sujet de ses médicaments représentent un facteur prédictif majeur de la non-adhésion intentionnelle.
Méthodologie: Cette étude observationnelle prospective avait pour objectif d’évaluer les croyances des patients au sujet des médicaments à prendre après la survenue d’un SCA, au moyen du questionnaire BMQ (Beliefs About Medicines), ainsi que l’adhésion thérapeutique, à l’aide de l’échelle de rapport sur l’adhésion aux médicaments MARS-5 (Medication Adherence Report Scale), à l’hôpital St. Paul de Vancouver, au Canada, de mai à décembre 2022. Les questionnaires BMQ et MARS-5 ont été administrés pendant l’hospitalisation, puis 4 semaines après le congé de l’hôpital. Les résultats comprenaient la différence du score BMQ-NCD (necessity-concerns differential – écart nécessité-inquiétudes), entre l’hospitalisation et le suivi à 4 semaines, et les facteurs associés au score BMQ-NCD.
Résultats: Au total, 47 participants ont terminé l’étude, jusqu’au suivi à 4 semaines. L’âge moyen était de 64 ans, et 83 % des sujets étaient de sexe masculin. La plupart des sujets présentaient un SCA sans élévation du segment ST. Aucune variation du score BMQ-NCD (7,3 vs 6,6; p = 0,29) ou MARS-5 (22,8 vs 23,7; p = 0,06) n’a été observée entre le congé de l’hôpital et le suivi à 4 semaines; cependant, le score BMQ spécifique à la nécessité avait significativement diminué (20,3 vs 18.8; p = 0,002). Les origines ethniques sud-asiatiques et moyen-orientales étaient associées à des scores BMQ-NCD plus élevés que les origines européennes. L’occupation d’un emploi à temps partiel et le sexe masculin étaient associés à des scores BMQ-NCD inférieurs.
Conclusions: Les participants entretenaient des croyances favorables envers leurs médicaments à prendre après la survenue d’un SCA, qui sont demeurées largement les mêmes entre l’hospitalisation et le suivi, 4 semaines après le congé de l’hôpital, à l’exception des croyances au sujet de la nécessité de prendre les médicaments. Les sujets d’origine européenne, ceux occupant un emploi à temps partiel et les sujets masculins ont eu les scores BMQ-NCD les plus faibles. L’adhésion thérapeutique autosignalée était élevée. Des réévaluations constantes des croyances des patients au sujet de la nécessité de prendre leurs médicaments après la survenue d’un SCA pourraient être justifiées afin d’éviter que les scores BMQ-NCD diminuent davantage.
© 2023 The Authors.
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