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Heart failure study: can patients drink freely without harm?
NCT ID NCT07400991
First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at whether people hospitalized for acute heart failure can safely drink as much as they want instead of limiting fluids. About 420 participants will be randomly assigned to either a strict 1.5 liters per day limit or a thirst-driven liberal intake. Researchers will measure how quickly patients stabilize, their thirst distress, and quality of life.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- fluid intake strategy (behavioral intervention)
- What this could lead to
- If successful, this could show that letting heart failure patients drink as they wish is safe and may improve their comfort and quality of life.
- What could go wrong
- This is a moderate-sized trial testing a behavioral change, not a new drug. Results may not apply to all heart failure patients, and the liberal approach could worsen fluid overload in some cases.
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 420 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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May 2026
- Expected to finish
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Aug 2029
An estimate. End dates often move.
- Lead sponsor
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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.
- 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.
Show the full entry requirements Hide 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: 1. Age \>18 years 2. Hospitalized for ADHF as the primary diagnosis, meeting both of the following: 1. ≥1 documented symptom of new or worsening heart failure (dyspnea, fatigue, decreased exercise tolerance, or symptom of end-organ hypoperfusion). 2. Objective evidence of ADHF, defined as either: i. ≥2 physical signs (edema, ascites, pulmonary rales/crackles, increased JVP, S3 gallop, rapid weight gain due to fluid retention), OR ii. ≥1 physical sign AND ≥1 laboratory finding indicative of ADHF (BNP \>500 ng/L or NT-proBNP \>2000 ng/L if sinus rhythm, or BNP \>750 ng/L or NT-proBNP \>3000 ng/L if atrial fibrillation, radiological/ultrasound evidence of pulmonary congestion, echocardiographic sign \[VCI \>2.1 cm, LVOT VTI \<15 cm, E/e' \>14, D-dominant pulmonary venous inflow pattern\], or invasive evidence \[CVP \>12 mmHg, PCWP \>18 mmHg, CI \<2.2 L/min/m2\]). 3. Treatment with ≥40 mg IV furosemide (or equivalent) 4. Enrolment within 24 hours of admission 5. Ability to provide informed consent Exclusion Criteria: 1. Requirement at admission for ICU-level care, or IV inotropic/vasopressor therapy for ADHF. 2. Na+ \<125 mmol/L or Na+ \>145 mmol/L. 3. End-stage chronic kidney disease on chronic dialysis or eGFR \<15 mL/min/1.73 m2 4. Any condition which would make participation unsafe or substantially affect protocol adherence, as judged by investigator.
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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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Department of Cardiology, Gødstrup Hospital
RECRUITINGHerning, 7400, Denmark
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