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Browsing by Subject "nonadherence"

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  • Ylinen, Varpu (2016)
    Chronic myeloid leukemia (CML) is a malignant hematologic disorder, which is fatal without a treatment. Oral tyrosine kinase inhibitors (TKIs) have revolutionized the treatment of CML and transformed the disease to a chronic condition that can be treated at patient's home. The common problem in the treatment of CML is patient's poor adherence to TKIs. The regular, consistent use of TKIs is crucial to keep disease under control. For this reason and to obtain an optimal treatment outcome, adherence to TKIs is extremely important. The aim of the study was to assess reasons for poor adherence to TKI-medications in Finnish CMLpatients, including patient characteristics, treatment related factors, comorbidities and concomitant medications. In addition, patients' experiences, beliefs, knowledge and perception about CML and its treatment were explored and how these could contribute to nonadherent behaviour. This study is part of the larger study, assessing adherence to TKI treatment among Finnish CML population. The data was obtained by using patient questionnaires and semi-structured theme-interview during patient meetings in 2012. Study population consisted of Finnish adult CML patients who had been on TKI -medication (imatinib, nilotinib or dasatinib) for more than six months prior to the study baseline. Patients' adherence was measured using Morisky Medication Adherence 8-Item Scale (MMAS-8) and based on their score, patients were divided into three groups: high, medium and low adherence. Both quantitative and qualitative methods were used in data analysis. Study findings show that 21% (n=18) of the patients were low adherent and 23% (n=20) were high adherent to their treatment. Patient sociodemographic characteristics or experienced adverse drug reactions (ADRs) did not predict adherence, while more concomitant medications and comorbidities were associated with high adherence. However, ADRs had negative effect on the quality of life of several nonadherent patients. All nonadherent patients reported unintentional nonadherence and the most common reason was forgetting. Two-thirds of the patients (n=12) reported intentional nonadherence, which often was a result of experienced ADRs. The knowledge of CML and its treatment was poor among all patients while over half of the nonadherent patients (n=11) thought that they received enough information received. Overall, patients were very satisfied with care provided by the hospitals, physicians and other healthcare professionals. Managing TKI-treatment regimen is challenging for many patients and ADRs can have a negative impact on the quality of life. Healthcare professionals should regularly assess patient adherence and provide information and support for the patients to help them to succeed in medication management. Reasons for poor adherence are complex and have to be identified from each individual patient so that adherence can be improved.
  • Huhtanen, Elina (2023)
    Nonadherence has been a challenge in health care since ancient times, and it is still a major source of poor therapeutic outcomes today. Various theories and theoretical models have been applied to explain adherence. So far no single theory or theoretical model has proved comprehensive, and the effects of various interventions applied have been limited. Theorizing of adherence is still incomplete. The aim of this study was to review the theoretical background of adherence so far, and to find the commonalities in theories and theoretical models, but also to discover possible trends in them. Study material comprised 20 theories and theoretical models. Material was found in reference books and documents with an aspect of adherence. Inclusion criteria involved adult outpatients with chronic diseases, excluding any special groups such as pregnant women. Emphasis was on the relevance of the theory, but comprehensive time span as well as various theory views were also considered. A chronological order was created. A qualitative content analysis was conducted, where phrases describing essential theory contents were categorised into distinctive classes. The incidence of classes and the possible trends of the incidence were analysed. Five classes emerged as commonalities in majority of the theories: Patient factors; sociocultural factors; motivation; phrases that referred to a behavioral view; and cognitive processes. Factors that diminished towards this day were the pivotality of cognitive processes in theory, and the subjective view of the health threat. Several factors were found to increase towards present-day theories and models: phrases that described the individual’s agency, such as self-efficacy or empowerment, concrete expressions of the individual’s abilities, skills and actual opportunity to the desired behavior, phrases that consisted of behavior being a function of its context or environment, and phrases where multifaceted intervention or tailoring the intervention according to the change process phase were considered. The commonalities found in the material reflect its emphasis on psychological behavior theories. The changes reflect the shift in how the patient’s agency is viewed in a patient care relationship. Newer theories also amplify the importance of viewing health behavior change as a series of phases. To achieve patient-centered care, these aspects create an increasing demand to health care professionals’ proficiency in how they encounter their patients. Moreover, there is an important signal for future intervention development in the form of a shift into multifaceted interventions and a system approach. Furthermore, a trend exists from using more general and abstract theories to a more concrete and applied approach. In the future, it is probably more fruitful to pursue knowledge-based and validated models and guidelines that are applicable to practice instead of aiming at developing a comprehensive universal theoretical approach.