Heart failure patients may finally ditch thirsty fluid rules
NCT ID NCT05931614
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests whether heart failure patients can safely drink as much fluid as they want instead of restricting it. Researchers will compare lung congestion, blood markers, quality of life, and hospital readmissions in 326 participants over time. The goal is to see if liberal drinking is at least as safe as restriction, while potentially reducing thirst and improving daily life.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- free fluid intake (behavioural intervention)
- What this could lead to
- If successful, this could show that heart failure patients can drink freely without worsening their condition, improving comfort and quality of life.
- What could go wrong
- This is a relatively small, early-stage trial (326 participants) and may not prove safety definitively. Results may not apply to all heart failure patients, especially those with severe kidney issues.
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.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 326 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2024
- Expected to finish
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Dec 2028
An estimate. End dates often move.
- Lead sponsor
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A government agency
The lead sponsor is a government body.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Diagnosed with left ventricual heart failure (HFrEF, HFmEF) * Physical, cognitive and linguistic ability to carry out all aspects of the study Exclusion Criteria: * Reversible cause of HF (thyroid disorders, severe anemia, etc.) * Hyponatremia at baseline (sodium \<130 mmol/L) * eGFR at baseline \<30mL/min/1.73m2 * Scheduled cardiac surgery, coronary intervention (percutaneous coronary intervention or coronary artery bypass graft surgery) within 3 months * Myocardial infarction within 3 months * Comorbidity for which fluid restriction or unlimited fluid intake is advised * Life expectancy \<6 months
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Karolinska University Hospital
RECRUITINGStockholm, 17176, Sweden
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