Urine-based algorithm to personalize diuretics for fluid relief in acute heart failure

Simple Urine Composition-based Personalized Algorithm for Effective Congestion Relief in Decompensated Heart Failure

NA · Wroclaw Medical University · NCT07099885

This will test whether a urine-composition algorithm can guide IV diuretics to help adults hospitalized with acute heart failure remove excess fluid more effectively.

Quick facts

PhaseNA
Study typeInterventional
Enrollment90 (estimated)
Ages18 Years and up
SexAll
SponsorWroclaw Medical University (other)
Locations2 sites (Wroclaw, Dolnosląskie and 1 other locations)
Trial IDNCT07099885 on ClinicalTrials.gov

What this trial studies

Ninety adults hospitalized for acute heart failure with clinical congestion will be randomized 1:1 to algorithm-guided versus usual care diuretic management. All participants receive IV furosemide with the initial dose set by the treating physician and a spot urine sample taken two hours after dosing to measure sodium and creatinine. A machine-learning tool uses those values to predict six-hour urine output and, in the algorithm arm, to guide the diuretic plan for the first 24 hours; the control arm receives physician-directed care without the tool. The approach focuses on early, personalized adjustment of loop diuretics to improve short-term decongestion outcomes during the hospitalization.

Who should consider this trial

Good fit: Adults admitted within 24 hours primarily for acute heart failure with signs of congestion, NT-proBNP >1500 pg/ml, and an anticipated need for diuretics for at least 48 hours.

Not a fit: Patients with end-stage kidney disease on dialysis, those who are hemodynamically unstable requiring inotropes, or those with active IV-treated infections are excluded and unlikely to benefit from this approach.

Why it matters

Potential benefit: If successful, the algorithm could speed up fluid removal and shorten time to clinical decongestion for hospitalized patients with acute heart failure.

How similar studies have performed: Previous work using urine sodium–guided diuretic strategies has shown promise, but machine-learning urine-output prediction tools are relatively novel and less tested in randomized settings.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adult patients over 18 years of age who provide informed consent
* Ability to enroll in the study within the first 24 hours of hospitalization
* Primary reason for hospitalization is acute heart failure with signs of congestion (at least moderate lower extremity edema)
* NT-proBNP \> 1500 pg/ml
* Anticipated need for diuretic therapy for at least 48 hours from the time of study enrollment

Exclusion Criteria:

* End-stage kidney disease requiring renal replacement therapy
* Hemodynamic instability requiring inotropic support
* Active infection requiring intravenous antibiotic therapy

Where this trial is running

Wroclaw, Dolnosląskie and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Acute Heart Failure, Congestion, Venous, decongestion, diuretics, algorithm, acute heart failure

Last reviewed 2026-05-15 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.