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Dialysis Patients' thirst under the microscope: new study tracks fluid weight gain

NCT ID NCT04721652

Knowledge-focused Sponsor: London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's Source: ClinicalTrials.gov ↗

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looks at how quickly people on dialysis gain weight from drinking fluids between sessions. It aims to understand if thirst right after dialysis leads to more fluid intake. The results could help improve care for kidney patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 20 people

The number the study aims to enrol. It can still change while the study runs.

Started

Feb 2021

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

In this observational study, we will have a sample of approximately 20 patients on chronic thrice weekly HD self-monitor their weight gain and blood pressure during the interdialytic intervals for one week. Demographics, anthropometrics, HD prescription and treatment information will be recorded. Study participants will complete four questionnaires at the first study visit and will then be provided medical grade scales and a blood pressure monitor, and will be asked to prospectively record weight changes and blood pressure at home four times a day for one week using a logbook. Patients with significant residual urinary volume and diabetes mellitus will not be recruited, the latter to remove the bias of blood glucose in determining osmotic thirst.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age ≥ 18 years * Thrice weekly maintenance hemodialysis * Willing and able to provide written informed consent Exclusion Criteria: * Diabetes Mellitus * Residual Urinary Volume \> 500 ml/day * Being able to self-monitor one's body weight and blood pressure

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Conditions

The condition(s) this trial relates to.

end stage renal failure

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Chronic kidney disease requiring chronic dialysis Interdialytic weight gain

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Adam Linton Unit

    RECRUITING

    London, Ontario, N6A 5W9, Canada

  • Westmount Kidney Care Centre

    RECRUITING

    London, Ontario, N6K 1M6, Canada

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