Faculty of Medicine

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    Cognitive impairment in CKD patients: a guidance document by the CONNECT network
    (Oxford University Press (OUP), 2024-09)
    Bolignano, Davide
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    Simeoni, Mariadelina
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    Hafez, Gaye
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    Pepin, Marion
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    Gallo, Antonio
    Cognitive impairment is a prevalent and debilitating complication in patients with chronic kidney disease (CKD). This position paper, developed by the Cognitive Decline in Nephro-Neurology: European Cooperative Target network, provides guidance on the epidemiology, risk factors, pathophysiology, diagnosis and clinical management of CKD-related cognitive impairment. Cognitive impairment is significantly more common in CKD patients compared with the general population, particularly those undergoing haemodialysis. The development of cognitive impairment is influenced by a complex interplay of factors, including uraemic neurotoxins, electrolytes and acid-base disorders, anaemia, vascular damage, metabolic disturbances and comorbidities like diabetes and hypertension. Effective screening and diagnostic strategies are essential for early identification of cognitive impairment utilizing cognitive assessment tools, neuroimaging and circulating biomarkers. The impact of various drug classes, including antiplatelet therapy, oral anticoagulants, lipid-lowering treatments and antihypertensive drugs, on cognitive function is evaluated. Management strategies encompass pharmacological and non-pharmacological interventions, with recommendations for optimizing cognitive function while managing CKD-related complications. This guidance highlights the importance of addressing cognitive impairment in CKD patients through early detection, careful medication management and tailored therapeutic strategies to improve patient outcomes.
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    Pathohistomorphometric and Immuno-Histologic Changes in Early Arteriovenous Fistula Failure in Patients with Chronic Kidney Disease
    (Macedonian Academy of Sciences and Arts/Walter de Gruyter GmbH, 2024-06-01)
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    Popov, Zhivko
    Hemodialysis is a prevalent treatment for the end-stage chronic kidney disease (CKD) worldwide. The primary arteriovenous fistula (AVF), widely considered the optimal hemodialysis access method, fails to mature in up to two-thirds of the cases. The etiology of the early AVF failure, defined as thrombosis or inability to use within three months post-creation remains less understood, and is influenced by various factors including patient demographics, surgical techniques, and genetic predispositions. Neointimal hyperplasia is a primary histological finding in stenotic lesions leading to the AVF failure. However, there are insufficient data on the cellular phenotypes and the impact of the preexisting CKD-related factors. This study aims to investigate the histological, morphometric, and immunohistochemical alterations in the fistula vein, pre-, peri-, and post-early failure. Materials and Methods Eighty-nine stage 4-5 CKD patients underwent standard preoperative assessment, including the Doppler ultrasound, before a typical radio-cephalic AVF creation. Post-failure, a new AVF was created proximally. The vein specimens were collected during the surgery, processed, and analyzed for morphometric analyses and various cellular markers, including Vimentin, TGF, and Ki 67. Results The study enrolled 89 CKD patients, analyzing various aspects of their condition and AVF failures. The histomorphometric analysis revealed substantial venous luminal stenosis and varied endothelial changes. The immunohistologic analysis showed differential marker expressions pre- and post-AVF creation. Conclusion This study highlights the complexity of the early AVF failures in CKD patients. The medial hypertrophy emerged as a significant preexisting lesion, while the postoperative analyses indicated a shift towards neointimal hyperplasia. The research underscores the nuanced interplay of vascular remodeling, endothelial damage, and cellular proliferation in the AVF outcomes.
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    Outcomes of digoxin vs. beta blocker in atrial fibrillation: report from ESC–EHRA EORP AF Long-Term General Registry
    (Oxford University Press (OUP), 2021-10-19)
    Ding, Wern Yew
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    Boriani, Giuseppe
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    Marin, Francisco
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    Blomström-Lundqvist, Carina
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    Potpara, Tatjana S
    Aims The safety of digoxin therapy in atrial fibrillation (AF) remains ill-defined. We aimed to evaluate the effects of digoxin over beta-blocker therapy in AF. Methods and results Patients with AF who were treated with either digoxin or a beta blocker from the ESC–EHRA EORP AF (European Society of Cardiology–European Heart Rhythm Association EURObservational Research Programme Atrial Fibrillation) General Long-Term Registry were included. Outcomes of interest were all-cause mortality, cardiovascular (CV) mortality, non-CV mortality, quality of life, and number of patients with unplanned hospitalizations. Of 6377 patients, 549 (8.6%) were treated with digoxin. Over 24 months, there were 550 (8.6%) all-cause mortality events and 1304 (23.6%) patients with unplanned emergency hospitalizations. Compared to beta blocker, digoxin therapy was associated with increased all-cause mortality [hazard ratio (HR) 1.90 (95% confidence interval, CI, 1.48–2.44)], CV mortality [HR 2.18 (95% CI 1.47–3.21)], and non-CV mortality [HR 1.68 (95% CI 1.02–2.75)] with reduced quality of life [health utility score 0.555 (±0.406) vs. 0.705 (±0.346), P < 0.001] but no differences in emergency hospitalizations [HR 1.00 (95% CI 0.56–1.80)] or AF-related hospitalizations [HR 0.95 (95% CI 0.60–1.52)]. On multivariable analysis, there were no differences in any of the outcomes between both groups, after accounting for potential confounders. Similar results were obtained in the subgroups of patients with permanent AF and coexisting heart failure. There were no differences in outcomes between AF patients receiving digoxin with and without chronic kidney disease. Conclusion Poor outcomes related to the use of digoxin over beta-blocker therapy in terms of excess mortality and reduced quality of life are associated with the presence of other risk factors rather than digoxin per se. The choice of digoxin or beta-blocker therapy had no influence on the incidence of unplanned hospitalizations.
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    Item type:Publication,
    Quality of Health Care and Mortality - Three Years of Experience
    (Macedonian Association of Anatomists and Morphologists, 2018)
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