View clinical trials related to Hemodialysis.
Filter by:The study will determine the efficacy of twice weekly hemodialysis in patients with residual kidney function.
Hypotension with potentially serious consequences for organ perfusion is a common complication in extracorporeal procedures such as hemodialysis / hemofiltration. The exact reasons for this are still insufficiently clarified. Probably periinterventional vasorelaxant released substances play a crucial role in these procedures. These substances could be due to contact of blood cells with the Membrane in the dialyzer / hemofilter arise. In this project the hypothesis will be checked, if EETs / DHETs are released by Erythrocytes during hemodialysis and thus act as potential candidate products for the result of hypotonic phases in the Dialysis. We will determine differences in RBC fatty acids profiling in hemodialysis patients before and after dialysis intervention. Furthermore a matched control group of healthy individuals will be profiled. RBC fatty acids profiling will be achieved by using targeted HPLC-MS mass spectrometry. It is believed that during hemodialysis / HLM / CVVH there is an increase in EETs / DHETs in the serum and in the erythrocytes. It is believed that shear forces play an important role in the release of erythrocyte EETs / DHETs.
End stage renal disease patients (ESRD) should be educated to take care of their arteriovenous fistula (AVF). Educational programs should have clear objectives and the interventions should be well defined. Therefore, assessing the interventions that can have the strongest impact on the patient's acquisition of self-care behaviors with AVF is extremely important. The aim is to assess the effectiveness of a structured intervention on the frequency of self-care behaviors with AVF by patients with ESRD on hemodialysis (HD).
Coagulation within the dialyzer membrane fibres is an obvious biological sign of bio-incompatibility. To avoid clotting during extracorporeal treatment, an anticoagulant is added to the circuit, resulting in an increased risk for bleeding complications. In addition, there is evidence that a substantial number of fibers can become blocked before this is reflected in routinely observed parameters, or in termination of the dialysis session. Little is known about the impact of such subclinical clotting on dialyzer performance in terms of solute clearance. Membrane clogging due to deposition of proteins and red blood cells on the dialysis membrane may influence both the diffusive and convective transport characteristics of the dialyzer membrane before leading to complete dialyzer clotting. In 2018, the invesitgators described a method to objectively count the number of blocked fibres inside a dialyzer using a micro-CT scanning technique. In the present trial, the investigators use this method to assess the resistance of the dialyzer to clotting, and to evaluate the impact of subclinical fibre blocking on solute removal and thus performance of a dialyzer during a dialysis session. The aim of this randomized cross-over study is to objectively quantify the performance of different dialyzer membranes: ATA™ membrane in the Solacea™ dialyzer, polysulfone membrane in the FX800 dialyzer, and the heparin-coated AN membrane in the Evodial dialyzer, and this with different anticoagulation strategies.
Thrice-weekly dialysis is the accepted standard of care for hemodialysis (HD) patients. Observational studies suggest that elderly HD patients do as well and have better quality of life with less dialysis (ie twice-weekly). We propose a single-center pilot study of 40 patients to determine the feasibility of a large randomized controlled trial (RCT) designed to determine the impact of HD frequency on well-being in new HD patients above the age of 70. The primary outcomes will be metrics of feasibility and safety. We hypothesize that an adequately powered RCT that will determine whether elderly patients who dialyze twice weekly have improved well-being compared to thrice-weekly is feasible
The current study will evaluate the plasma pharmacokinetics of amlodipine in a cohort of 8 adult volunteers who are receiving regular hemodialysis treatment (HD) 3 days a week for 4 hours each day and have been taking a total daily dose of 5-10 mg of amlodipine besylate for >30 days as part of their usual care. Blood sampling will occur over 13 hours, with frequent sampling during HD and in the 4 hours after termination of HD treatment. The 8 subjects will all receive their prescribed total daily dose of 5-10 mg 5 hours prior to HD treatment. The pre-HD sample will also be sent for pharmacogenomics genotyping. Safety and pharmacodynamic assessments (blood pressure (BP) and heart rate (HR) assessments) will be performed throughout the study. Axiom Precision Medicine Research Array (Affymetrix, Santa Clara, CA) will be used to evaluate genotype of CYP3A4. CYP3A4 phenotype will be evaluated using the ratio of parent drug to metabolite. Non-compartmental analyses will be performed to compare maximum concentrations (Cmax), time to maximum concentration and area under the curve from time 0 to the last measurable sample (AUClast) between the two phases. Compartmental analyses will be performed to construct a model to explain time-dependent changes in amlodipine clearance. Monte Carlo simulations will be performed to compare amlodipine pharmacokinetic profiles on and off HD.
The study will be performed in two parts: 1) The pharmacokinetic (PK) part and 2) The appetite and nutritional evaluation part. The PK part of study will be conducted in open label manner on 10 end stage kidney disease (ESKD) patients receiving maintenance hemodialysis (MHD) treatment. For the PK part, a starting dose of cannabis oil -1 drop of 3% cannabis oil once a day [each drop contain 1.2 mg CBD (cannabidiol) and 1.2 mg of ∆9-THC (∆9-tetrahydrocannabinol)], was judged to be safe for a first-in-MHD patient's administration. Escalation to the next higher dose and any dose adjustments of the next dose levels will be based on safety and tolerability results of the previously administered dose and available PK data of previous dose groups. Once the first dosage proved to be safe, there will be a 2 fold increase from the first dose level (2 drops once a day) to the second dose level. The dose levels will be increased by 2-fold from the previous dose level, until basal hunger and prospective consumption ratings assessed by the visual analogue scale (VAS) will increase at least by 10 mm between screening and the study visits (change-from-baseline) . PK parameters will be evaluated after first dosage administration and after dosage increased. The appetite and nutritional evaluation part of study will be conducted as a 3-month, double-blind, parallel-group, placebo-controlled, single center study. The study population will include 30 ESKD patients receiving MHD treatment with different degrees of protein-energy wasting (PEW) defined as malnutrition-inflammation score (MIS) above 6. A total of 30 subjects will be randomized to treatment with either cannabis oil or matching placebo.
The current study will evaluate the plasma pharmacokinetics of metoprolol in a cohort of 8 adult volunteers who are receiving regular hemodialysis treatment (HD) 3 days a week for 4 hours each day and have been taking a total daily dose of 25-200 mg of metoprolol succinate for >30 days as part of their usual care. Blood sampling will occur over 10 hours, with frequent sampling during HD and in the 4 hours after termination of HD treatment. The 8 subjects will all receive their prescribed dose (25-200 mg total daily dose) 2 hours prior to HD treatment. The pre-HD sample will also be sent for pharmacogenomics genotyping. Safety and pharmacodynamic assessments (blood pressure (BP) and heart rate (HR) assessments) will be performed throughout the study. Axiom Precision Medicine Research Array (Affymetrix, Santa Clara, CA) will be used to evaluate genotype of CYP2D6. CYP2D6 phenotype will be evaluated using the ratio of parent drug to metabolite. Non-compartmental analyses will be performed to compare maximum concentrations (Cmax), time to maximum concentration and area under the curve from time 0 to the last measurable sample (AUClast) between the two phases. Compartmental analyses will be performed to construct a model to explain time-dependent changes in metoprolol clearance. Monte Carlo simulations will be performed to compare metoprolol pharmacokinetic profiles on and off HD.
To evaluate a web application tool that hemodialysis patients can use outside of dialysis time to log and prioritize their concerns for the nephrologists. Specifically, the investigators will compare the usability of a web application tool to a structured paper form. The investigators will also use data from semi-structured interviews to better understand the experience and acceptability of the web app among patient participants randomized to the web application and among participating nephrologists. Primary outcome -Usability (effectiveness, efficiency, satisfaction) Secondary outcomes -Quality of the patient-physician interaction (Communication Assessment Tool (CAT-14))
The study investigators hypothesize that intermittent hemodialysis with regional citrate anticoagulation (Prometheus system/Frésénius) is more efficient than reduced systemic heparin anticoagulation in patients at bleeding risk hospitalized in nephrology intensive care unit