This thesis investigates the effectiveness and safety of treatments in patients with cardiovascular and kidney disease. Routinely collected healthcare data provide an immense opportunity to... Show moreThis thesis investigates the effectiveness and safety of treatments in patients with cardiovascular and kidney disease. Routinely collected healthcare data provide an immense opportunity to investigate such questions in populations underrepresented in clinical trials, such as patients with advanced chronic kidney disease (CKD).The first part of this thesis deals with how to appropriately use routinely collected data to answer causal questions. It illustrates what study designs eliminate commonly occurring biases, namely immortal time and prevalent user bias, and how to use propensity scores to correctly adjust for confounding in the setting of time-fixed and time-varying treatments.The second part investigates the effectiveness and safety of various treatments. For instance, the effectiveness of beta-blockers in patients with heart failure and advanced CKD is investigated. Renin-angiotensin system inhibitors (RASi) are an especially widely used medication class in CKD patients. The relationship between the magnitude of renal function decline - which is commonly observed after initiation of these drugs - with mortality and cardiorenal outcomes is investigated. In addition, comparative effectiveness study of RASi and calcium channel blockers among patients with advanced CKD is performed. In the last two chapters, a target trial is explicitly emulated to investigate the effect of stopping or continuing RASi and the optimal timing to start dialysis in patients with advanced chronic kidney disease. Show less
Chronic kidney disease (CKD) poses a major challenge to public health. China, a middle-income country, is the largest country globally with a current population of 1.4 billion. China accounts for... Show moreChronic kidney disease (CKD) poses a major challenge to public health. China, a middle-income country, is the largest country globally with a current population of 1.4 billion. China accounts for around one fifth of the global burden of CKD. Hence, eHealth self-management interventions are a great potential to Chinese populations. An extensively studied CKD self-management eHealth intervention is the Dutch ‘Medical Dashboard (MD)’. It has been demonstrated effective in decreasing the burden of CKD. To aim of this thesis is to inform the adaptation and evaluation of a tailored CKD self-management eHealth intervention in China based on the Dutch MD intervention. Specific characteristics and needs (e.g. facilitators and barriers) in Chinese settings need to be addressed to optimize the implementation of CKD self-management eHealth intervention. Emphasis should be placed on addressing the existing paternalistic patient-HCP relationship, stakeholder involvement in the development and implementation process, adjusting eHealth design features to fit the clinical workflows, and providing the needed support and training. This thesis is a vital step towards the design and implementation of a tailored eHealth solution to improve health outcomes of patients with CKD and address the high burden of CKD in China. Show less
The main objective of this thesis was to determine the value of dialysis and conservative care for older patients with advanced chronic kidney disease. To do so, we compared a combination of... Show moreThe main objective of this thesis was to determine the value of dialysis and conservative care for older patients with advanced chronic kidney disease. To do so, we compared a combination of patient-relevant outcomes and treatment costs in a cohort of older patients (≥70 years old) who chose either dialysis or conservative care after a shared decision-making process. Overall, we observed that older patients who chose dialysis lived longer compared with older patients who chose conservative care. There was, however, little or no significant survival advantage in patients aged ≥80 years old and patients aged ≥70 years old with severe comorbidity who chose dialysis over conservative care, while similar outcomes on quality of life and symptoms were observed between both patient groups, and lower treatment burden and treatment costs were observed in patients who chose conservative care. Therefore, we conclude that conservative care is a viable treatment alternative to dialysis in selected older patients. In clinical practice, conservative care needs to become available and openly discussed as one of the possible treatment pathways for advanced chronic kidney disease in older patients. Moreover, a shift towards a person-centered process of shared decision-making is needed that aims to focus on all that matters to the patient as person, in order to come to a treatment plan that fits best with the patient. Show less
As the population is aging worldwide, and in spite of all preventive efforts, age-related diseases are increasingly prevalent, such as cardiovascular diseases and cognitive impairment. Different... Show moreAs the population is aging worldwide, and in spite of all preventive efforts, age-related diseases are increasingly prevalent, such as cardiovascular diseases and cognitive impairment. Different vascular risk factors, both the ‘traditional’ modifiable factors, such as hypertension or diabetes, and non-modifiable factors, such as age or gender, can lead to different kind of intertwined micro- and macrovascular diseases in various or multiple simultaneous organs. There is a growing need for knowledge regarding the interplay between different (co)morbidities, the relation of (co)morbidities with the various underlying pathophysiological mechanisms and treatment options of these (co)morbidities. Therefore, the aims of this thesis were to identify patients at high cardiovascular risk and to optimize treatment for these patients. We further unravelled the complexity of various interacting (poly) vascular diseases, ultimately leading to an increased risk of not only cognitive impairment, but also MACE including death. Identification of these patients and better understanding of the interplay and underlying mechanisms of these diseases is the first step towards preventive strategies. Treating these high risk patients can be a therapeutic challenge, but there is growing knowledge regarding both established and evolving therapies to optimize efficacy and efficiency. Show less
