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CompletedNCT03578510Updated May 12, 2023

Effect of Plasma Sodium Concentration on Blood Pressure Regulators During Hemodialysis

An interventional study of Hemocontrol hemodialysis and Standard hemodialysis in Patients With End Stage Renal Disease on Hemodialysis, sponsored by University Medical Center Groningen. Completed at 1 site in Netherlands. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2023-05-12.

Sponsored by University Medical Center Groningen · Not applicable, Interventional, and Basic science

From the registry’s dates

  • Registered 5 years 8 months after the study started (first participant enrolled Sep 2012, registered Jun 2018).
Phase
Not applicable
Study type
Interventional
Enrollment
29
Allocation
Randomized
Ages
18 Years to 90 Years
Sex
All
01

Study summary

Intradialytic hypotension (IDH) is a frequent and serious complication that may occur during hemodialysis treatment. The investigators and others have shown that the Hemocontrol biofeedback system is associated with improved hemodynamic stability. Hemocontrol is a technique that guides the patients' blood volume along a pre-set trajectory by continuously adjusting the ultrafiltration rate and dialysate conductivity. In a recent pilotstudy, the investigators found significantly higher plasma vasopressin levels during the first hour of dialysis with Hemocontrol in comparison with standard hemodialysis. Increased vasopressin levels may contribute to intradialytic hemodynamic stability during hemodialysis by enhanced vasoconstriction. These results, however, did not prove directly that the improved hemodynamic stability with Hemocontrol is indeed caused by higher initial plasma vasopressin levels. Alternative explanations might be that 1) the higher initial plasma sodium levels with Hemocontrol dialysis enhance activity of the sympathetic nervous system directly, causing vasoconstriction and thereby improved hemodynamic stability and/or 2) that the higher initial plasma levels of sodium in Hemocontrol inhibit the release of nitric oxide by the vascular endothelium. Another goal of this study is to investigate whether vasopressin is removed with hemodialysis.

02

Conditions studied

  • Patients With End Stage Renal Disease on Hemodialysis

Keywords

  • Hemodialysis, sodium, endothelium, sympathetic activity, vasopressin
03

In context

Kidney Failure, Chronic

2,085 studies on the registry are indexed under Kidney Failure, Chronic; 260 are open to participants now.

This study's enrollment of 29 is below the median of 55 across 1,557 interventional studies indexed under Kidney Failure, Chronic.

Browse Kidney Failure, Chronic studies →

Lead sponsor

University Medical Center Groningen is the lead sponsor of 609 studies on the registry; 174 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 90 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Age ≥18 years
  • A thrice-weekly 4 hours hemodialysis schedule
  • Dialysis on an arteriovenous fistula
  • A usual interdialytic weight gain of ≥2.0 kg

Exclusion criteria

Exclusion Criteria:

  • Age\<18 years
  • Dialysis duration of \<4 or >4 hours
  • Dialysis frequency of \<3 or >3 times a week
  • Dialysis on a central venous catheter
  • A usual interdialytic weight gain \<2 kg
05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Single (Participant)
Enrollment
29 participants (actual)

Study arms

  • Active comparator
    SHD

    Standard hemodialysis

    Device: Hemocontrol hemodialysis · Device: Standard hemodialysis

  • Experimental
    HHD

    Hemocontrol hemodialysis

    Device: Hemocontrol hemodialysis · Device: Standard hemodialysis

Interventions

  • DeviceHemocontrol hemodialysis

    Each participating patient underwent one standard hemodialysis and one hemodialysis with Hemocontrol in random order, both 4 hours in total duration. The Hemocontrol system guides the patients' blood volume along a predefined ideal relative blood volume trajectory, by continuously adjusting ultrafiltration volume and dialysate sodium concentration.

  • DeviceStandard hemodialysis

    Each participating patient underwent one standard hemodialysis and one hemodialysis with Hemocontrol in random order, both 4 hours in total duration. During standard hemodialysis, a constant ultrafiltration rate and dialysate conductivity was used.

06

What researchers measure

Primary outcomes

  1. Change in plasma vasopressin levels

    Plasma levels of the antidiuretic hormone, i.e. vasopressin

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis blood is withdrawn from the dialysis line to determine plasma levels of vasopressin.

Secondary outcomes

  1. Change in systolic and diastolic blood pressure in mmHg

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

  2. Change in heart rate in beats per minute

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

  3. Change in relative blood volume in %

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

  4. Change in plasma sodium levels in mmol/L

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

Other outcomes

  1. Change in plasma osmolality levels in milliosmol/kg

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

  2. Change in nitrite and nitrate levels in µmol/L

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

  3. Change in plasma noradrenalin levels in mmol/L

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

  4. Change in heart rate variability in ms

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

  5. Change in baroreflex sensitivity in ms/mmHg

    Time frame: Before, after 30, 60, 120 and 180 minutes and after dialysis

07

Study locations

1 site
  • University Medical Center Groningen
    Groningen, 9700 RB, Netherlands
08

References and documents

Publications

  • Ettema EM, Kuipers J, van Faassen M, Groen H, van Roon AM, Lefrandt JD, Westerhuis R, Kema IP, van Goor H, Gansevoort RT, Gaillard CAJM, Franssen CFM. Effect of plasma sodium concentration on blood pressure regulators during hemodialysis: a randomized crossover study. BMC Nephrol. 2018 Aug 22;19(1):214. doi: 10.1186/s12882-018-0997-z. PubMed 30134847 ↗

Individual participant data

Plan to share: Undecided

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 12, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03578510
Lead sponsor
University Medical Center Groningen
Responsible party
dr. C.F.M. Franssen (Principal Investigator, University Medical Center Groningen) — Principal investigator
First posted
Jul 6, 2018
Start date
Sep 17, 2012
Primary completion
Mar 25, 2013
Completion
Mar 25, 2013
Last update
May 12, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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