Comparing ultrafiltration and IV diuretics for heart failure treatment

A Randomized Controlled Study to Evaluate the Safety and Effectiveness of the Aquadex System in Patients With Heart Failure and Fluid Overload

Not applicable Interventional Nuwellis, Inc. · NCT05318105

This study tests whether a new machine that removes extra fluid can help people with worsening heart failure feel better compared to the usual IV medications.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment372 (estimated)
Ages18 Years and up
SexAll
SponsorNuwellis, Inc. Industry-sponsored
Locations17 sites (Tucson, Arizona and 16 other locations)
Trial IDNCT05318105 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of adjustable ultrafiltration using the Aquadex System compared to traditional IV loop diuretics in patients experiencing worsening heart failure and fluid overload. Participants will be randomly assigned to receive either treatment to assess clinical outcomes related to fluid management. The study aims to determine which method provides better relief from symptoms and improves patient outcomes during hospitalization.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older who are hospitalized with acute decompensated heart failure and exhibit signs of fluid overload.

Not a fit: Patients with a new diagnosis of heart failure or those with severe comorbid conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could offer a more effective treatment option for patients with worsening heart failure and fluid overload.

How similar studies have performed: Previous studies have shown promise in using ultrafiltration for fluid management in heart failure, suggesting potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* 18 years or older
* Man, or non-pregnant woman
* Admitted to the hospital with a diagnosis of acute decompensated heart failure
* On regularly prescribed oral loop diuretics, Sodium-glucose Cotransporter-2 (SGLT2) Inhibitors or a Mineralcorticoid Receptor Antagonists (MRA) prior to admission
* Fluid overload manifested by at least three clinical indications (e.g., edema, an excess of at least 10 pounds of fluid, etc.)
* Provide written informed consent

Exclusion Criteria:

* New diagnosis of heart failure
* Acute coronary syndromes
* Creatinine ≥ 3.0 mg/dl or planned renal replacement therapies at the time of enrollment
* Contraindications to systemic anticoagulation
* Severe concomitant disease expected to prolong hospitalization or cause death in less than 90 days
* Sepsis or ongoing systemic infection
* Active myocarditis
* Constrictive pericarditis or restrictive cardiomyopathy
* Severe aortic stenosis
* Any condition in the opinion of the investigator that would prevent the patient from follow-up/survival

Where this trial is running

Tucson, Arizona and 16 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.
Conditions Heart FailureFluid OverloadHeart failureFluid overload
Last reviewed 2026-06-13 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.