Troponin T
Conditions
Keywords
hemodialysis, low-flux dialysis, high-flux dialysis, medium cut-off membrane
Brief summary
In this study, 24 prevalent hemodialysis patients will undergo four regular hemodialysis sessions during which four different treatments will be performed. * Treatment 1: MCO membrane (=medium cut off) * Treatment 2: low flux membrane * Treatment 3: high flux membrane * Treatment 4: HDF(=hemodiafiltration) treatment with high flux membrane So far, there is no data on cardiac bioenzyme levels during hemodialysis on the MCO membrane, thus, a acute elevation during hemodialysis might be mitigated by increased clearance.
Detailed description
Patients who are on hemodialysis will be included in this study. After obtaining informed consent, patients will be treated with four different hemodialysis sessions: * Treatment 1: MCO membrane (=medium cut off) * Treatment 2: low flux membrane * Treatment 3: high flux membrane * Treatment 4: HDF(=hemodiafiltration) treatment with high flux membrane The order of the treatment regimens with the different membranes will be randomized in four sequences (Williams design). Sequence 1: MCO, low flux, HDF, high flux Sequence 2: low flux, high flux, MCO, HDF Sequence 3: high flux, HDF, low flux, MCO Sequence 4: HDF, MCO, high flux, low flux Dialysis treatment will be standardized according to our clinic standard. Dialysis fluid temperature will be set to 1.0°C below the patient's body temperature, which will be assessed by auricular thermometers, to achieve maximal hemodynamic stability. Dialysis fluid composition will be standardized to calcium of 1.25mmol/L, bicarbonate of 30mmol/L, and a variable potassium and sodium concentration, depending on the patients' plasma potassium and sodium concentration. Ultrafiltration volume will be set according to the caretaking provider. Membranes used in the study will be FX CorDiax 10, 800 (Fresenius Medical Care, Bad Homburg vor der Höhe, Germany) and Theranova 400 (Baxter, Deerfield, Illinois, USA). We will perform the analysis only in mid-week dialysis due to the following reasons: First, hemodynamic stability is most often compromised during the first treatment of the week, due to the need of large volumes of ultrafiltration and, second, because we assume that troponin T levels reach a steady state 48 hours after the last dialysis session. Patients undergo their routine dialysis schedule, only the membrane will be changed. In each session, blood samples will be taken at the start of dialysis, after 1 and after 4 hours.
Interventions
DEVICETheranova 400
medium cut off (MCO) membrane
DEVICEFX 10
low-flux membrane
DEVICEFX CorDiax 800
high-flux membrane
DEVICEHDF
hemodiafiltration
Sponsors
Medical University of Graz
Study design
Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
DIAGNOSTIC
Masking
NONE
Intervention model description
Randomized controlled four-treatment, four-period crossover trial
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* minimum 18 years of age * End stage kidney disease patient undergoing hemodialysis * Written consent of the participant after being informed
Exclusion criteria
* No informed consent was obtained * Pregnancy
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Troponin T - relative - 1 hour | 1 hour after start of hemodialysis | Relative change from baseline (pre-treatment) to after 1 hour of hemodialysis in high sensitivity cardiac troponin T, assessed by Roche Elycsys Assay. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Troponin T - relative - 4 hours | 4 hours after start of hemodialysis | Relative change of high sensitivity cardiac troponin T from baseline to after completion of hemodialysis |
| Troponin I - relative - 1 hour and 4 hours | 1 hour and 4 hours after start of hemodialysis | relative change of high sensitivity cardiac troponin I from baseline to after 1 hour and after completion of hemodialysis |
| Troponin T - absolute - 1 hour and 4 hours | 1 hour and 4 hours after start of hemodialysis | absolute difference of high sensitivity cardiac troponin T from baseline to after 1 hour and after completion of hemodialysis |
| Troponin I - absolute - 1 hour and 4 hours | 1 hour and 4 hours after start of hemodialysis | absolute difference of high sensitivity cardiac troponin I from baseline to after 1 hour and after completion of hemodialysis |
Countries
Austria
Outcome results
None listed