Publications by authors named "Heleniak Z"

Article Synopsis
  • Patients with nephrotic syndrome (NS) are at higher risk for acute ischemic stroke (aIS) and intracranial hemorrhage (ICH), but the specific risk factors for these outcomes were previously unclear.
  • A study analyzed a cohort of NS patients from 2010-2021, identifying significant stroke risk factors including diabetes mellitus, diabetic nephropathy, smoking, prior arterial thromboembolic events, and being over 55 years old.
  • Contrary to expectations, the use of low molecular weight heparin did not lower stroke risk, and the findings emphasize the need for careful management of high-risk NS patients.
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The diagnosis of end-stage renal disease (ESRD) is made when the estimated glomerular filtration rate is less than 15 mL/min/1.73 m2. Most patients with that stage of chronic kidney disease (CKD) are eligible for renal replacement treatment, which includes kidney transplantation, hemodialysis and peritoneal dialysis.

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Introduction: Formation of denser and resistant to lysis fibrin clot networks has been shown in chronic kidney disease (CKD) and atrial fibrillation (AF). We investigated whether such prothrombotic fibrin clot properties are associated with faster progression of CKD in AF patients.

Material And Methods: We recruited 265 AF patients (men 49.

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Kidney transplant recipients (KTRs) are at a higher risk of severe COVID-19 development. The course of the infection may vary. Long-term consequences for graft function are still being studied.

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Article Synopsis
  • IgA nephropathy (IgAN) is a serious kidney disease linked to IgA buildup, and a large study identified 30 genetic risk factors associated with it.
  • Fourteen new loci were discovered that suggest a connection between genetic influences and abnormal IgA levels.
  • The research highlights inflammation-related pathways and potential drug targets, revealing that higher genetic risk scores are tied to earlier kidney failure.
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Up to 20% of patients with chronic kidney disease have atrial fibrillation, and 40%-50% of atrial fibrillation patients suffer from chronic kidney disease. The 2 diseases share several risk factors and frequently coincide with each other. Both entities are associ ated with a prothrombotic state, which contributes to increased thromboembolic risk.

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Chronic kidney disease (CKD) patients experience a wide range of symptoms that deteriorate their health-related quality of life (HRQoL). We aimed to estimate the prevalence and severity of lower gastrointestinal (GI) symptoms in non-dialysis CKD adult outpatients, and to summarize the relationships between these symptoms and HRQoL, laboratory test results, and clinical data. The protocol of the study was preregistered (PROSPERO CRD42021255122).

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Hemodialysis (HD) patients are characterized by malnutrition, which adversely affects their survival. The development of malnutrition is influenced, among other factors, by improper diet and the advanced age of patients. The study aimed to assess the nutritional status and adherence to dietary recommendations among older patients.

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Background: It is known that kidney transplantation (KTx) decreases mortality rate and increases life expectancy about 10 years compared with dialysis, particularly in patients with diabetes. However, cardiovascular disease is still the most common cause of death after transplantation.

Purpose: The evaluation of the cardiovascular risk after successful KTx in diabetic and nondiabetic patients.

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The current data on climate change and environmental degradation are dramatic. The consequences of these changes are already having a significant impact on people's health. Physicians - as advocates of the patients, but also as citizens - have an ethical obligation to be involved in efforts to stop these changes.

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Diabetic kidney disease (DKD) is a leading cause of end-stage renal disease. Along with the increasing prevalence of diabetes, DKD is expected to affect a higher number of patients. Despite the major progress in the therapy of DKD and diabetes mellitus (DM), the classic clinical diagnostic tools in DKD remain insufficient, delaying proper diagnosis and therapeutic interventions.

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Article Synopsis
  • Kidney transplant recipients (KTRs) face a higher risk of severe COVID-19 infection, with significant mortality rates, yet the impact on long-term kidney function post-recovery is unclear.
  • A study involving 1058 KTRs found that among 180 who had recovered from COVID-19, symptoms mostly included weakness and fever, with none requiring invasive ventilation therapy.
  • Results indicated that there was no significant change in kidney function, as measured by serum creatinine levels, six months after COVID-19, suggesting mild cases did not negatively affect graft performance.
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Background: There is a controversy over the renoprotective and cardioprotective effects of renin-angiotensin-aldosterone system blockade in kidney transplant recipients (KTRs). The aim of the study was to evaluate the short-term effects of losartan on allograft injury, cardiovascular risk biomarkers and safety of the treatment in KTRs.

Methods: An interim analysis of a prospective, open, multicenter, controlled clinical trial CELART (Cardiovascular Effects of Losartan After Renal Transplantation) was performed.

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Article Synopsis
  • The study examines arterial stiffness and phase angle (PhA) as important factors in cardiovascular health, focusing on renal transplant recipients (RTRs) using different immunosuppressant treatments, specifically belatacept (BELA) versus calcineurin inhibitors (CNI).
  • A total of 325 RTRs were analyzed, showing no significant differences in arterial stiffness or PhA among those receiving BELA, cyclosporine A (CsA), or tacrolimus (Tac), although age was identified as a key factor influencing arterial stiffness.
  • The findings suggest that while arterial stiffness and PhA are critical indicators in RTRs, further studies are necessary to understand these cardiovascular risks and the effects
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Introduction: Patients after SARS-CoV-2 infection frequently face "Post-COVID-19 Syndrome", defined by symptoms that develop during or after COVID-19, continue for more than 12 weeks, and are not explained by an alternative diagnosis. We aimed to evaluate the presence of post-COVID-19 syndrome and its predictors in kidney transplant recipients (KTR) 6 months after the disease.

Materials And Methods: A total of 67 KTR (38 m) with a mean age of 53.

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Background: Chronic kidney disease (CKD) is considered a risk factor for thromboembolic and bleeding events in patients with atrial fibrillation (AF).

Aims: We sought to assess predictors of clinical outcomes among AF patients with advanced CKD.

Methods: In a prospective cohort study, we enrolled 180 AF patients with stage 4 CKD, defined as estimated glomerular filtration rate of 15-29 ml/min/1.

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: Hypertension affects at least 80% of hemodialysis patients. Inappropriate control of blood pressure is mentioned as one of the essential cardiovascular risk factors associated with development of cardiovascular events in dialysis populations. The aim of the cross-sectional, retrospective study was the evaluation of the antihypertensive treatment schedule and control of blood pressure in relation to the guidelines in the group of hemodialysis patients.

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Introduction: In renal transplant recipients (RTRs), cardiovascular (CV) complications are associated with non-traditional risk factors, such as a decline in graft function, immunosuppressive therapy, time of dialysis before transplantation, inflammation and anemia. Higher value of arterial stiffness is the consequence of risk factors and it can lead to CV events. The aim of this study was the assessment of the arterial stiffness in RTRs with different value of estimated glomerular filtration rate (eGFR) and its correlation with classical and non-classical CV risk factors.

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INTRODUCTION Sleep disturbances, similarly to constipation‑related symptoms, are common problems in patients with chronic kidney disease (CKD) and are associated with worse health-related quality of life. OBJECTIVES The aim of the study was to investigate sleep problems in conservatively treated patients with CKD and to assess association between sleep quality and constipation in that population. PATIENTS AND METHODS In this cross‑sectional study, 100 conservatively treated outpatients with CKD filled questionnaires addressing sleep quality (The Medical Outcomes Study 12‑item Sleep Scale-Revised [MOS‑Sleep‑R]) and constipation‑related symptoms (PAC‑SYM, Rome III criteria).

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Introduction: Arterial stiffness parameters can be used as a predictor of cardiovascular events in the general population and renal transplant recipients (RTRs). Additionally, the renin-angiotensin-aldosterone-system (RAAS) blockade mitigates arterial stiffness in the general population. There are no sufficient data concerning the role of the RAAS blockade in reducing arterial stiffness among patients after kidney transplantation.

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Atrial fibrillation (AF) is associated with increased stroke and bleeding risk in patients with chronic kidney disease (CKD). Little is known about the real-life use of non-vitamin K antagonist oral anticoagulants (NOACs) in CKD stage G4. In a retrospective cohort study, we enrolled 182 consecutive AF patients with CKD stage G4 including 90 (49%) subjects on NOAC, ie, 61 on apixaban 2.

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Constipation is a common gastrointestinal disorder that in general population is associated with worse health-related quality of life (HRQoL). The epidemiology of constipation has not been reliably determined in conservatively-treated CKD patients. We aimed to determine the prevalence of constipation and constipation-related symptoms in conservatively-treated CKD patients, to find factors associated with their altered prevalence ratio (PR), and to verify the associations between constipation and HRQoL.

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