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Active, not recruitingNCT04603014IPUF-HDUpdated May 4, 2026

Interdialytic Peritoneal UltraFiltration in HemoDialysis Patients

A Phase 2 interventional study of Interdialytic peritoneal ultrafiltration with 10% dextrose solution in End Stage Renal Disease on Dialysis, Hemodialysis and Peritoneal Dialysis, sponsored by London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's. Active, not recruiting at 1 site in Canada. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-05-04.

Sponsored by London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

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.

Read the detailed description

Hypothesis: Interdialytic peritoneal ultrafiltration (iPUF) via Tenckhoff peritoneal dialysis catheter using 10% Dextrose infusate is feasible and provides effective volume management and sodium removal in prevalent HD patients.

Overview: This is a prospective, interventional pilot study from the London Health Sciences Centre (LHSC) prevalent HD population. Study patients will undergo the surgical implantation of a Tenckhoff peritoneal dialysis catheter before study start. After the successful insertion of the Tenckhoff catheter, study patients will enter a run-in phase, where their residual renal function, volume, hemodynamic and cardiac status during HD will be assessed. During the following weeks (intervention weeks 1, 2, 3), study patients will receive in-center iPUF intervention, consisting of peritoneal infusate instillation of a 10% dextrose solution via a Tenckhoff catheter, immediately after the first two HD sessions of the week (Monday, Wednesday); the infusate will be dwelling in the study patient's peritoneal cavity for 2 hours, at the end of which the solution will be drained and the patient sent home. Study patients will be monitored during infusate administration and for the first four hours thereafter. The study intervention will be discontinued at the beginning of week 5 (Wash-out); during week 5 and the first HD session of week 6, study patients will be monitored to observe potential residual effects of the iPUF intervention.

02

Conditions studied

  • End Stage Renal Disease on Dialysis
  • Hemodialysis
  • Peritoneal Dialysis
  • Nonosmotic Sodium Storage
03

In context

Lead sponsor

London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's is the lead sponsor of 309 studies on the registry; 126 are open to participants now.

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

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • At least one of the following:

    • Average per-session interdialytic weight gain ≥ 4.0 % of their dry weight in the last month;
    • Inability to consistently achieve dry weight with the current treatment schedule;
    • Need for additional HD treatments to achieve prescribed dry weight.
  • Weekly HD sessions - up to three times/week
  • Age ≥18 years
  • Willing and able to give informed consent

Exclusion criteria

Exclusion Criteria

  • Contraindications to peritoneal dialysis
  • Contraindications to MRI
  • Uncontrolled diabetes mellitus
  • Active infections
  • Non-compliance to hemodialysis prescription
  • Pre-study serum sodium \< 130 mmol/L
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    Interdialytic peritoneal ultrafiltration

    Will receive incremental interdialytic peritoneal ultrafiltration with a 10% dextrose solution, twice a week for three consecutive weeks

    Combination Product: Interdialytic peritoneal ultrafiltration with 10% dextrose solution

Interventions

  • Combination productInterdialytic peritoneal ultrafiltration with 10% dextrose solution

    Interdialytic peritoneal ultrafiltration with incremental doses of a 10% dextrose solution, after hemodialysis twice weekly for three consecutive weeks

06

What researchers measure

Primary outcomes

  1. Skin sodium concentration

    Skin sodium concentration at the end of week 4 as measured by sodium-23 magnetic resonance imaging of the leg.

    Time frame: End of week 4

  2. Adverse events

    Completion of the iPUF treatment without adverse events

    Time frame: iPUF interventions on Week 2, 3 and 4

Secondary outcomes

  1. Interdialytic weight gain

    Difference in interdialytic weight gain at run-in week vs end of intervention, vs wash-out

    Time frame: week 1 vs 4, week 1 vs 5-6

  2. Total weekly sodium removal with interdialytic peritoneal ultrafiltration

    Total weekly sodium removal with peritoneal dialysis in intervention weeks

    Time frame: week 2, 3, 4

  3. Total volume of fluid removed with interdialytic peritoneal ultrafiltration

    Total volume of fluid removed with peritoneal dialysis in intervention weeks

    Time frame: week 2, 3, 4

  4. Home blood pressure

    Changes in home blood pressure at baseline vs end of intervention and vs washout

    Time frame: week 1 vs week 4, week 1 vs 5-6

  5. Mean intradialytic hemodynamics

    Changes in mean intradialytic hemodynamic monitor parameters, as measured with Finometer and CVInsight

    Time frame: week 1 vs 4, week 1 vs 6

  6. Regional wall motion abnormalities

    Changes in Regional Wall Motion Abnormalities (echocardiography) at peak-stress hemodialysis

    Time frame: week 1 vs 4, week 1 vs 6

  7. Symptoms

    Changes in symptoms as measured with the London Evaluation of Illness questionnaire

    Time frame: week 1 vs 4, week 1 vs 6

  8. Infusion pain

    Infusion pain as measured with 0-10 visual analog scale

    Time frame: Through study completion, average of all study treatments

  9. Changes in serum sodium

    Post-iPUF change in serum sodium

    Time frame: Through study completion, average of all study treatments

07

Study locations

1 site
  • London Health Sciences Centre
    London, Ontario N6A 5W9, Canada
08

References and documents

Publications

  • Flythe JE, Curhan GC, Brunelli SM. Disentangling the ultrafiltration rate-mortality association: the respective roles of session length and weight gain. Clin J Am Soc Nephrol. 2013 Jul;8(7):1151-61. doi: 10.2215/CJN.09460912. Epub 2013 Mar 14. PubMed 23493384 ↗
  • Assimon MM, Wang L, Flythe JE. Failed Target Weight Achievement Associates with Short-Term Hospital Encounters among Individuals Receiving Maintenance Hemodialysis. J Am Soc Nephrol. 2018 Aug;29(8):2178-2188. doi: 10.1681/ASN.2018010004. Epub 2018 May 23. PubMed 29793962 ↗
  • Ramdeen G, Tzamaloukas AH, Malhotra D, Leger A, Murata GH. Estimates of interdialytic sodium and water intake based on the balance principle: differences between nondiabetic and diabetic subjects on hemodialysis. ASAIO J. 1998 Nov-Dec;44(6):812-7. doi: 10.1097/00002480-199811000-00009. PubMed 9831090 ↗
  • Titze J, Lang R, Ilies C, Schwind KH, Kirsch KA, Dietsch P, Luft FC, Hilgers KF. Osmotically inactive skin Na+ storage in rats. Am J Physiol Renal Physiol. 2003 Dec;285(6):F1108-17. doi: 10.1152/ajprenal.00200.2003. Epub 2003 Jul 29. PubMed 12888617 ↗
  • Kopp C, Linz P, Wachsmuth L, Dahlmann A, Horbach T, Schofl C, Renz W, Santoro D, Niendorf T, Muller DN, Neininger M, Cavallaro A, Eckardt KU, Schmieder RE, Luft FC, Uder M, Titze J. (23)Na magnetic resonance imaging of tissue sodium. Hypertension. 2012 Jan;59(1):167-72. doi: 10.1161/HYPERTENSIONAHA.111.183517. Epub 2011 Dec 5. PubMed 22146510 ↗
  • Machnik A, Neuhofer W, Jantsch J, Dahlmann A, Tammela T, Machura K, Park JK, Beck FX, Muller DN, Derer W, Goss J, Ziomber A, Dietsch P, Wagner H, van Rooijen N, Kurtz A, Hilgers KF, Alitalo K, Eckardt KU, Luft FC, Kerjaschki D, Titze J. Macrophages regulate salt-dependent volume and blood pressure by a vascular endothelial growth factor-C-dependent buffering mechanism. Nat Med. 2009 May;15(5):545-52. doi: 10.1038/nm.1960. Epub 2009 May 3. PubMed 19412173 ↗
  • Wenstedt EFE, Olde Engberink RHG, Vogt L. Sodium Handling by the Blood Vessel Wall: Critical for Hypertension Development. Hypertension. 2018 Jun;71(6):990-996. doi: 10.1161/HYPERTENSIONAHA.118.10211. Epub 2018 Apr 16. No abstract available. PubMed 29661837 ↗
  • Qirjazi E, Salerno FR, Akbari A, Hur L, Penny J, Scholl T, McIntyre CW. Tissue sodium concentrations in chronic kidney disease and dialysis patients by lower leg sodium-23 magnetic resonance imaging. Nephrol Dial Transplant. 2020 Apr 6:gfaa036. doi: 10.1093/ndt/gfaa036. Online ahead of print. PubMed 32252091 ↗
  • Canaud B, Kooman J, Selby NM, Taal M, Francis S, Kopperschmidt P, Maierhofer A, Kotanko P, Titze J. Sodium and water handling during hemodialysis: new pathophysiologic insights and management approaches for improving outcomes in end-stage kidney disease. Kidney Int. 2019 Feb;95(2):296-309. doi: 10.1016/j.kint.2018.09.024. PubMed 30665570 ↗
  • Dahlmann A, Dorfelt K, Eicher F, Linz P, Kopp C, Mossinger I, Horn S, Buschges-Seraphin B, Wabel P, Hammon M, Cavallaro A, Eckardt KU, Kotanko P, Levin NW, Johannes B, Uder M, Luft FC, Muller DN, Titze JM. Magnetic resonance-determined sodium removal from tissue stores in hemodialysis patients. Kidney Int. 2015 Feb;87(2):434-41. doi: 10.1038/ki.2014.269. Epub 2014 Aug 6. PubMed 25100048 ↗
  • Santos SF, Peixoto AJ. Sodium balance in maintenance hemodialysis. Semin Dial. 2010 Nov-Dec;23(6):549-55. doi: 10.1111/j.1525-139X.2010.00794.x. PubMed 21175831 ↗
  • Obi Y, Rhee CM, Mathew AT, Shah G, Streja E, Brunelli SM, Kovesdy CP, Mehrotra R, Kalantar-Zadeh K. Residual Kidney Function Decline and Mortality in Incident Hemodialysis Patients. J Am Soc Nephrol. 2016 Dec;27(12):3758-3768. doi: 10.1681/ASN.2015101142. Epub 2016 May 11. PubMed 27169576 ↗
  • Kawanishi H, Hashimoto Y, Nakamoto H, Nakayama M, Tranaeus A. Combination therapy with peritoneal dialysis and hemodialysis. Perit Dial Int. 2006 Mar-Apr;26(2):150-4. No abstract available. PubMed 16623416 ↗
  • McIntyre CW. Bimodal dialysis: an integrated approach to renal replacement therapy. Perit Dial Int. 2004 Nov-Dec;24(6):547-53. PubMed 15559484 ↗
  • Sriperumbuduri S, Biyani M, Brown PA, McCormick BB. Retrospective study of patients on hybrid dialysis: Single-center data from North America. Perit Dial Int. 2020 Mar;40(2):224-226. doi: 10.1177/0896860819887284. Epub 2020 Jan 17. PubMed 32063198 ↗
  • Banshodani M, Kawanishi H, Moriishi M, Shintaku S, Tsuchiya S. Association between Dialysis Modality and Cardiovascular Diseases: A Comparison between Peritoneal Dialysis and Hemodialysis. Blood Purif. 2020;49(3):302-309. doi: 10.1159/000504040. Epub 2019 Dec 18. PubMed 31851981 ↗
  • Kanda R, Io H, Nakata J, Makita Y, Sasaki Y, Matsumoto M, Wakabayashi K, Tomino Y, Suzuki Y. Evaluation of Long-Term Combination Therapy With Peritoneal Dialysis and Hemodialysis. Ther Apher Dial. 2017 Apr;21(2):180-184. doi: 10.1111/1744-9987.12517. Epub 2017 Feb 10. PubMed 28185405 ↗
  • Rao VS, Turner JM, Griffin M, Mahoney D, Asher J, Jeon S, Yoo PS, Boutagy N, Feher A, Sinusas A, Wilson FP, Finkelstein F, Testani JM. First-in-Human Experience With Peritoneal Direct Sodium Removal Using a Zero-Sodium Solution: A New Candidate Therapy for Volume Overload. Circulation. 2020 Mar 31;141(13):1043-1053. doi: 10.1161/CIRCULATIONAHA.119.043062. Epub 2020 Jan 8. PubMed 31910658 ↗
  • Quiroga IM, Baboo R, Lord RH, Darby CR. Tenckhoff catheters post-renal transplantation: the 'pull' technique? Nephrol Dial Transplant. 2001 Oct;16(10):2079-81. doi: 10.1093/ndt/16.10.2079. PubMed 11572901 ↗
  • Grieff M, Mamo E, Scroggins G, Kurchin A. The 'Pull' Technique for Removal of Peritoneal Dialysis Catheters: A Call for Re-Evaluation of Practice Standards. Perit Dial Int. 2017 Mar-Apr;37(2):225-229. doi: 10.3747/pdi.2016.00152. PubMed 28360368 ↗
  • Quiroga I, Reddy SP, Bhattacharjya S, Darby CR. Tenckhoff catheters: the pull technique. Nephrol Dial Transplant. 2003 Aug;18(8):1682. doi: 10.1093/ndt/gfg173. No abstract available. PubMed 12897121 ↗
  • McIntyre CW. Update on Hemodialysis-Induced Multiorgan Ischemia: Brains and Beyond. J Am Soc Nephrol. 2024 May 1;35(5):653-664. doi: 10.1681/ASN.0000000000000299. Epub 2024 Jan 26. PubMed 38273436 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 4, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT04603014
Lead sponsor
London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's
Collaborators
Sequana Medical N.V.
Responsible party
Chris McIntyre (Professor of Medicine, Medical Biophysics and Pediatrics, School of Medicine and Dentistry, Western University; Director of The Kidney Clinical Research Unit, London Health Sciences Centre, London, ON, Canada, London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's) — Principal investigator
First posted
Oct 26, 2020
Start date
Jan 1, 2021
Primary completion
Dec 30, 2026 (estimated)
Completion
Dec 30, 2026 (estimated)
Last update
May 4, 2026

Study contacts

Christopher W. McIntyre, MD, PhD
principal investigator · Lawson Research Institute

Oversight

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

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This study is active, not recruiting, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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