Clinical Research Directory

Virtual Reality Distraction for Pain and Anxiety in Hemodialysis Patients

1. Assess pain and anxiety levels in hemodialysis patients during arteriovenous fistula needle insertion. 2. Determine the effect of the distraction technique using virtual reality on pain and anxiety levels during arteriovenous fistula needle insertion in hemodialysis patients. 3. Find out the differences in the level of pain and anxiety after using virtual reality with regard to the demographic and clinical data of the sample.

CanSOLVE 2.0 Theme 3.1 Mind the Gap - Dialectical Behavioural Therapy (DBT) Skills Training Program Pilot

The goal of this pilot implementation study is to implement and evaluate a 13-week dialectical behavioural therapy (DBT) skills training program to address challenges to mental health and mental wellbeing in people who have recently started facility-based hemodialysis or those who may start within the next 6-12 months.

Vibration Massage, Static Stretching Exercise, Intradialytic Muscle Cramps and Stress

Chronic kidney disease (CKD) is characterised by kidney damage that persists for 3 months or longer or an estimated glomerular filtration rate (eGFR) below 60 mL/min/1.73 m² and is assessed in 6 categories. According to this categorisation, when stage 4 CKD progresses, patients are offered several options for renal replacement therapy. In the last stage of CKD, stage 5, renal replacement therapies including dialysis and kidney transplantation are used. Haemodialysis (HD) is a frequently used life-saving treatment method that removes harmful waste substances accumulated in the body, helps to maintain kidney function, provides fluid-electrolyte balance, prolongs life by managing uremic symptoms. Patients with ESRD are exposed to many health problems such as water-salt balance abnormalities, hypertension, hyperkalemia, metabolic acidosis, hyperphosphatemia, anaemia, cardiovascular disease. While the problems experienced are controlled with HD treatment, the treatment process and the continuation of life dependent on a machine cause life-threatening acute (hypotension, nausea, vomiting, muscle cramps, itching, pain, etc.) and chronic complications (pericarditis, hypertension, anaemia, hepatitis infections, etc.). In addition, due to these complications, HD patients may have problems that cannot be ignored such as deterioration in general health perception, sleep disturbance, anxiety, depression, stress, and difficulties in fulfilling responsibilities due to psychosocial problems. Intradialytic muscle cramp, which develops acutely during HD and is experienced at least once by patients, frequently manifests as involuntary muscle contractions in the lower extremities. The aetiology of intradialytic muscle cramp includes hypotension, electrolyte mineral disorders, high ultrafiltration (UF), excess weight gain between two HDs and carnitine deficiency. In the pharmacological treatment of this complication, which should be managed acutely, intravenous saline solution and hypertonic glucose administration are prominent, but high-quality evidence on the effectiveness of these treatments is needed. While the results of interventions such as aromatherapy, reflexology, massage, stretching-relaxation exercises, hot-cold applications etc. in intradialytic muscle cramp have been reached, the lack of evidence for vibration massage is striking. Management of intradialytic muscle cramp is important for the HD adequacy of patients and failure to manage it may lead to fatal complications such as hypertension, hypervolemia, pulmonary oedema and left ventricular failure due to inadequate HD sessions. It has also been reported that sleep and quality of life are adversely affected in cases where intradialytic muscle cramp cannot be managed; shortening of one HD session per week leads to increased mortality rates, depression and anxiety levels and stress. Salivary cortisol is a useful biomarker often used as a marker of psychological stress. Salivary cortisol levels peak approximately 20 minutes after an acute stress event. Massage, which is among independent nursing interventions, is a manipulation that provides physical and psychological relaxation by mechanically stimulating muscle tissues. During massage, nurses can apply euphlorage, petrissage, friction, tapotman and vibration. Vibration massage is applied to improve muscle atrophy and bone density caused by microgravity and immobilisation. Static stretching exercise, another intervention in intradialytic muscle cramp management, reduces muscle stiffness and tension by increasing muscle flexibility and range of motion by stimulating neural activities. These exercises reduce the risk of injury to joints, muscles and tendons by stimulating the formation of chemicals that allow the connective tissue to move easily and are recommended for the prevention of muscle cramps.

Cardiovascular and Bone Mineral Markers in Dialysis Patients and Healthy Controls

This observational study will compare cardiovascular status, bone mineral metabolism, systemic inflammation, body composition, functional status, quality of life, pruritus, and pain among patients receiving different renal replacement therapy modalities and healthy controls. Adult participants will be included in four groups: maintenance hemodialysis, continuous ambulatory peritoneal dialysis, automated peritoneal dialysis, and healthy controls. No new treatment, drug, dialysis modality, or experimental device will be assigned as part of the study. Participants will continue their routine clinical care. Serum interleukin-6 (IL-6), vascular cell adhesion molecule-1 (VCAM-1), fibroblast growth factor-23 (FGF-23), and sclerostin levels will be measured. Arterial stiffness will be assessed using pulse wave velocity (PWV), and body composition will be assessed using the Body Composition Monitor (BCM). Handgrip strength, quality of life, pruritus, and pain scores will also be evaluated. The study will also explore correlations between biochemical biomarkers, arterial stiffness, body composition, and patient-reported outcomes. In the automated peritoneal dialysis group, objective treatment adherence will additionally be assessed using the Sharesource (Baxter/Vantive) cloud-based remote patient monitoring platform.

Effects of Intradialytic Nutrition on Dialysis Adequacy and Fatigue

This randomized, two-period, two-sequence crossover trial aims to evaluate the effects of intradialytic nutrition on dialysis adequacy, intradialytic hemodynamic parameters, and fatigue in adults receiving maintenance hemodialysis. Participants will receive standardized intradialytic nutrition during one study period and no food intake during the other period, with each participant serving as their own control. Dialysis adequacy will be assessed using the urea reduction ratio (URR) and single-pool Kt/V (spKt/V), while fatigue will be evaluated using the Piper Fatigue Scale. Intradialytic blood pressure and other clinical parameters will also be monitored throughout the study. The findings are expected to provide evidence regarding the safety and clinical effects of intradialytic nutrition and to support individualized nutritional management strategies for patients undergoing maintenance hemodialysis.

Randomized Cross-Over Comparison of Medium Cut-Off and High-Flux Hemodialysis Membranes

Patients receiving maintenance hemodialysis are at increased risk of cardiovascular disease, chronic inflammation, endothelial dysfunction, and impaired quality of life. Medium cut-Off (MCO) hemodialysis membranes have been developed to enhance the removal of middle-molecular-weight uremic toxins compared with conventional high-flux membranes, which may improve inflammatory status and cardiovascular health. The aim of this study is to compare the effects of MCO and high-flux hemodialysis membranes on inflammatory biomarkers and cardiovascular function in adult patients receiving maintenance hemodialysis. The primary outcomes are changes in serum interleukin-6 (IL-6) and vascular cell adhesion molecule-1 (VCAM-1) levels. Secondary outcomes include arterial stiffness assessed by pulse wave velocity (PWV), body composition assessed by Body Composition Monitor (BCM), handgrip strength, and patient-reported outcomes including quality of life, pruritus, and pain scores. This is a prospective, randomized, open-label, two-sequence, two-period crossover study conducted at Gazi University Faculty of Medicine. Thirty adult hemodialysis patients will be randomized to one of two treatment sequences. Participants in Sequence A will receive MCO dialysis membranes for the first 3 months followed by high-flux membranes for the next 3 months. Participants in Sequence B will receive high-flux membranes for the first 3 months followed by MCO membranes for the next 3 months. Blood samples and clinical assessments will be performed at baseline, month 3, and month 6. The study is expected to provide evidence regarding the effects of different dialysis membrane technologies on inflammation and cardiovascular health and may contribute to optimizing membrane selection in routine hemodialysis practice.

Euvolemia-Based Assessment of Pulmonary Hypertension in Stable Hemodialysis Patients

Pulmonary hypertension (PH) is a frequent and clinically significant complication in patients with end-stage kidney disease (ESKD) undergoing maintenance hemodialysis (HD). However, PH assessment in this population is often confounded by volume overload, leading to potential overestimation and misclassification. This prospective, multicenter observational study aims to evaluate the prevalence, phenotype, and predictors of PH in HD patients under standardized euvolemic conditions. A structured pretrial phase including volume assessment and correction will be performed prior to echocardiographic evaluation, which will be conducted after confirmation of euvolemia, post-hemodialysis or on the following day. In participants with echocardiographic findings suggestive of PH, right heart catheterization may be performed when clinically indicated and after obtaining specific informed consent. The study integrates clinical, biological, dialysis-related, and echocardiographic data to provide a comprehensive characterization of PH in a well-defined ESKD population.

Arrhythmia in Hemodialysis Patients

Patients receiving dialysis for kidney failure suffer from very high rates of sudden cardiac death due to abnormal heart rhythms and perfusion defects associated with HD treatment. It has previously been recognized that patients suffer heart injury during the dialysis procedure which may be an important factor for investigation. The study uses a simple implantable device that can monitor heart rhythms over time to gather information on the type of abnormal rhythms that occur in dialysis patients. This information will be combined with ultrasound and x-ray scans of the heart that will also be collected. The goal is to understand the relationship between the abnormal rhythms and injury to the heart during dialysis and what causes these injuries. The information gathered in this study will be used to compare the accuracy of an in house personalized computational model to predict potential cardiac injuries when patients undergo HD treatment.

Music-Assisted Acupressure for Pain During AVF Cannulation in Hemodialysis Patients

This randomized controlled trial was conducted to evaluate the effect of music-assisted acupressure on pain experienced during arteriovenous fistula (AVF) cannulation in hemodialysis patients. The study was carried out with 72 patients receiving hemodialysis treatment three times per week via AVF in a state hospital in Gaziantep, Türkiye. Participants were randomly assigned to one of four groups: music-assisted acupressure, acupressure alone, music alone, and control group (routine care). The acupressure intervention was applied to the Hegu (LI4) point for approximately 3 minutes prior to needle insertion, while the music intervention consisted of listening to instrumental Classical Turkish Music in the Acemaşiran mode through headphones starting 5 minutes before cannulation and continuing until the end of the procedure. Pain intensity during AVF cannulation was measured using the Visual Analog Scale (VAS) during three consecutive dialysis sessions. The primary outcome was pain severity during needle insertion. The study aimed to determine whether combining music therapy and acupressure would provide greater pain relief compared to single interventions or routine care. Findings suggest that music-assisted acupressure may be an effective non-pharmacological nursing intervention for reducing procedural pain in hemodialysis patients.

Usefulness of the VExUS Protocol for Dry-Weight Adjustment in Hemodialysis Patients: The Multicenter VExHD Study

The objective of this prospective observational study is to determine the utility of ultrasonographic assessment using the VExUS protocol for dry weight adjustment in clinically euvolemic patients undergoing hemodialysis. The primary hypothesis is that the assessment of venous congestion by ultrasound may help identify patients who can tolerate increased ultrafiltration, thereby improving blood pressure control. The comparison group will consist of patients who do not meet the criteria for venous congestion according to the VExUS protocol. In patients meeting the criteria for venous congestion, the ultrafiltration volume during hemodialysis will be increased.

The Application of Art Therapy to Patients Undergoing Hemodialysis Treatment

Purpose of the Study: This study aims to investigate the effect of art therapy on anxiety and psychological resilience levels in Chronic kidney disease(CKD) patients undergoing hemodialysis patients. Hemodialysis patients undergo long-term treatment, often experiencing psychological issues such as anxiety and depression, which significantly reduce their quality of life. Among non-pharmacological approaches to alleviate these symptoms, art therapy has gained increasing attention. Art therapy helps patients shift their focus away from their illness, fosters self-confidence, reduces anxiety, and promotes relaxation .

Health Belief Model-Based Education for Pruritus and Quality of Life in Hemodialysis Patients

This study evaluates the effect of a Health Belief Model (HBM)-based educational intervention on pruritus severity and pruritus-related quality of life (QoL) in hemodialysis patients. The cluster-randomized controlled trial includes hemodialysis patients allocated to an intervention group and a control group. The intervention group receives two face-to-face HBM-based education sessions at 15-day intervals supported by a structured booklet, while the control group receives standard care. Pruritus outcomes and quality of life are assessed using the 5-D Itch Scale and ItchyQoL to determine the effectiveness of theory-driven educational frameworks in routine nursing care and patient-centered outcomes.

Role of Vascular Endothelial Markers in Predicting Renal Prognosis and Mortality in Patients Undergoing HD-AKI

The aim of this study was to evaluate the role of Activin A, Nostrin, and Angiopoetin-2 levels in predicting the prognosis of renal function and in-hospital and 6-month mortality in patients undergoing emergency hemodialysis treatment for acute kidney injury. The main questions it aims to answer are: Acute renal injury is a clinical entity with very important consequences. Mortality and morbidity are high in patients requiring hemodialysis. This study aims to evaluate the predictive effects of certain biomarkers on outcomes such as short- and long-term monitoring of renal function, weaning or continuation of hemodialysis, in-hospital and 6-month mortality in these patients. In patients with an indication for emergency hemodialysis, the following levels will be measured before hemodialysis: * Serum Activin A, * Serum Nostrin, * Serum Angiopoetin-2

Preoperative Hemodialysis Timing in Patients With End-Stage Kidney Disease: The POD-ESKD Pilot Trial

The goal of this clinical trial is to evaluate the feasibility of two different preoperative hemodialysis schedules for people with end-stage kidney disease (ESKD) who undergo surgical procedures. The main questions it aims to answer are: Is it feasible to randomize participants with ESKD undergoing nonemergent surgical procedures to same-day hemodialysis versus no same-day hemodialysis? Is it safe to randomize participants with ESKD undergoing nonemergent surgical procedures to same-day hemodialysis versus no same-day hemodialysis? Researchers will compare the two hemodialysis schedules to see if the scheduling and safety profiles are the same. Participants will: Answer questions about their health up to 4 weeks before and 4 weeks after the surgical procedure. Receive hemodialysis on the day of the surgical procedure or not, depending on the study treatment assignment.

Angiotensin-Neprilysin Inhibition in Hemodialysis Initiation

This randomized placebo-controlled clinical trial will evaluate the effect of sacubitril/valsartan (compared with placebo) on echocardiographic measures of hypervolemia, preservation of residual renal function, and key safety parameters in incident hemodialysis patients.

Modulation of Gut Microbiota Composition and Gut Permeability Profiles by Multispecies Synbiotic Supplementation in Hemodialysis Patients

Chronic kidney disease (CKD) patients undergoing maintenance hemodialysis experience profound alterations in their gut microbiota, leading to dysbiosis and increased gut permeability. This disruption facilitates the translocation of endotoxins and gut-derived uremic toxins such as indoxyl sulfate and p-cresyl sulfate into the systemic circulation, contributing to heightened systemic inflammation, cardiovascular disease risk, and accelerated CKD progression. Synbiotic supplementation, particularly multispecies formulations, has emerged as a promising therapeutic strategy to restore gut microbial balance, enhance intestinal barrier integrity, and reduce the systemic burden of deleterious microbial metabolites. These probiotics potentially improve clinical outcomes by modulating inflammatory pathways and decreasing circulating levels of uremic toxins. Despite these insights, few clinical trials have comprehensively assessed the effects of multispecies synbiotic on fecal microbiome composition, gut permeability and uremic toxin profiles in hemodialysis patients. This pilot study aims to fill this gap by evaluating the modulatory effects of a 12-week multispecies synbiotic intervention.

The Effect of Laughter Therapy on Hemodialysis Patients

Internet-based behavioral therapy applications made during the quarantine and isolation period during the pandemic process, and the application of laughter therapy, which is a group-oriented technique that increases the feeling of togetherness and happiness, can be used as an online method to reach large masses. However, since there are a limited number of studies in the literature on online laughter therapy in patients and not all sessions are online in the study, it was thought that more and methodological studies are needed to confirm the effectiveness of the therapy on the applicability of the online platform. Therefore, this study was conducted to evaluate the blood cortisol levels, depression, anxiety, stress levels and quality of life of laughter therapy in hemodialysis patients.

The Effect of Sacubitril and Valsartan on Heart Function in Chronic Hemodialysis Patients With HFpEF

Heart failure is the most common cause of death of patients on chronic hemodialysis treatment, and to date there is no effective therapy for the treatment of this comorbidity in this group of patients. The most common form of heart failure in these groups of patients is heart failure with preserved ejection fraction (HFpEF). As a new therapy for heart failure, a new group of drugs called angiotensin receptor and neprilysin inhibitors (ARNI) has been imposed, whose representative is the drug sacubitril/valsartan. The therapy has been shown to be superior to any other therapy to date for the treatment of heart failure with reduced ejection fraction (HFrEF) and has been included in European and American guidelines for the treatment of patients with HFrEF. Since 2022, the drug has been approved in the USA for the treatment of patients with HFpEF, while in Europe it is still not approved for this indication. Currently, the drug is not approved for patients on chronic hemodialysis anywhere in the world, and its effect on this group of patients is unknown. There are very few studies examining the safety and efficacy of sacubitril/valsartan in chronic hemodialysis patients with HFpEF. Precisely because of this, the aim of this study is to determine the effectiveness of this drug in these groups of patients. I will conduct the research as a randomized controlled trial (single blind research) where the subjects will be patients on chronic hemodialysis treatment who have proven HFpEF. HFpEF is proven by the HFA-PEFF scale. The patients will be divided into two groups - the test group and the control group (30 patients in each group). The input variables will be patients on chronic hemodialysis treatment (whose hemodialysis treatment lasts at least one year); patients with heart failure with preserved ejection fraction; height; weight. Output variables will be heart ultrasound parameters and laboratory findings (NTproBNP, hs troponin, aldosterone, renin). The aim of the study is to determine the effect of sacubitril/valsartan on ultrasound parameters and on cardiovascular and other biomarkers in patients on chronic hemodialysis treatment with HFpEF.

Effects of Royal Jelly Supplementation in Chronic Kidney Disease

The objective of this study is to evaluate the effects of royal jelly on inflammation and cellular senescence in patients with chronic kidney disease (CKD) on hemodialysis (HD).

Exercise and Cardiac Stunning During HD

The purpose of this study is to determine the effect of a 12-week cycling during hemodialysis program on hemodialysis-induced myocardial stunning in adult individuals receiving hemodialysis.

Hand Reflexology for Fatigue and Anxiety in Hemodialysis Patients

This randomized controlled trial evaluates the efficacy of hand reflexology massage (HRM) in reducing fatigue and anxiety among adult patients receiving maintenance hemodialysis. Participants are randomly assigned to either an HRM intervention group or a usual care control group. The HRM group receives eight 21-minute sessions of hand reflexology during routine hemodialysis visits over four weeks, while the control group continues with standard care only. Outcomes are measured using validated scales at baseline, mid-intervention (after 4 sessions), and post-intervention (after 8 sessions). This non-pharmacological, nurse-deliverable intervention is designed to be culturally appropriate, feasible in resource-limited settings, and respectful of patient comfort during dialysis.

Efficacy of of Acupuncture Laser Therapy on Hemodialysis Patients

This expected prospective randomized control trial study will involve 60 haemodialysis patients with neck pain. The patients in the experimental group (E) will subject, medical treatment besides acupuncture laser therapy. Medical treatment will be used in the control group (C). Pain and quality of life assessment will be used in the assessment of outcome.

Interdialytic Peritoneal UltraFiltration in HemoDialysis Patients

Sodium accumulates in the tissues of patients with kidney disease and impairs survival. Three-times weekly, standard hemodialysis alone cannot remove excess sodium efficiently. A sample of 10 chronic hemodialysis patients will undergo a 5-week, pilot, interventional study to test the efficacy of additional sodium removal in-between hemodialysis sessions, twice per week, for three weeks. Tissue sodium removal will be achieved with peritoneal dialysis after the surgical insertion of a peritoneal dialysis catheter. Tissue sodium removal will be assessed at the beginning and at the end of the study with sodium magnetic resonance imaging of a peripheral limb (leg). Patients will also undergo monitoring for symptoms and blood pressure throughout the study to assess the safety of this procedure.

Intradialytic Exercise and Remote Ischaemic Preconditioning: a Cardioprotective Role ?

The aim of this clinical trial is to evaluate whether intermittent exercise and remote ischaemic preconditioning (rIPC) during haemodialysis (HD) can provide cardioprotection in adult patients (aged 20-79 years) undergoing HD for at least 3 months. The main questions to be answered are Does intermittent exercise or rIPC reduce myocardial stunning during HD? Do these interventions have a beneficial effect on haemorheology, arrhythmias, systemic inflammation and HD efficiency? The investigators will compare three HD sessions: no intervention (HD-CONT), with moderate-intensity intermittent exercise (HD-EX), and with rIPC using cuff inflation (HD-rIPC) to see if HD6EX and HD-rIPC approaches offer enhanced cardioprotection. Participants will: Undergo three randomised HD sessions. Participate in 5 blocks of moderate-intensity exercise or rIPC during the HD sessions. Have cardiac function and biomarkers assessed before, during and after HD.