Introduction. Despite the high number of inactive patients with COPD, not all inactive patients are referred to physical therapy, unlike recommendations of general practitioner (GP) guidelines. It is likely that GPs take other factors into account, determining a subpopulation that is treated by a physical therapist (PT). The aim of this study is to explore the phenotypic differences between inactive patients treated in GP practice and inactive patients treated in GP practice combined with PT. Additionally this study provides an overview of the phenotype of patients with COPD in PT practice. Methods. In a cross-sectional study, COPD patient characteristics were extracted from questionnaires. Differences regarding perceived health status, degree of airway obstruction, exacerbation frequency, and comorbidity were studied in a subgroup of 290 inactive patients and in all 438 patients. Results. Patients treated in GP practice combined with PT reported higher degree of airway obstruction,more exacerbations, more vascular comorbidity, and lower health status compared to patients who were not referred to and treated by a PT. Conclusion. Unequalpatient phenotypes in different primary care settings have important clinical implications. It can be carefully concluded that other factors, besides the level of inactivity, play a role in referral to PT.
Worldwide, Chronic Obstructive Pulmonary Disease (COPD) is one of the most common chronic diseases and currently the fourth leading cause of mortality. The natural course of this progressive disease is interrupted by periods of symptom deterioration called exacerbations. Exacerbations accelerate the decline in lung function, negatively affect the quality of life, and lead to increased mortality and high socio-economic costs. Self-management is widely recognized to be important to reduce this negative impact on both patients and society. Patients are nowadays expected to have an active role and to take responsibility in decisions affecting their chronic disease. Thus far, patients with COPD do not always respond to self-management interventions. There is a need for more comprehensive, dynamic and individualized strategies to improve exacerbation-related selfmanagement behavior. The use of mobile health (mHealth) has potential to engage patients in managing their own health, to provide tailored support in developing self-management skills over time and to change health behaviors. The aim of this thesis was twofold. In part one, we aimed to generate a better understanding of self-management behavior of patients with COPD and explore whether the use of mHealth is promising to enhance exacerbation-related selfmanagement. In part two, we aimed to develop an evidence-driven, attractive and usable mHealth intervention to enhance exacerbation-related self-management in patients with COPD. This resulted in the Copilot app, a mobile app for patients with COPD that targets early detection of exacerbations and performing prompt actions. In part two, we described the development of the Copilot app in detail. During the development, proof for the Copilot app was collected by stepwise scientific underpinning of the working mechanism and usability of the app. Finally, the feasibility of the Copilot app in the daily practice of health care providers was evaluated.
