Clinical trial Recruiting at 49 sites Interventional Ages 22 and up

Fluid removal with the Reprieve System for acute decompensated heart failure

Official title: Fluid Management of Acute Decompensated Heart Failure Subjects Treated With Reprieve System (FASTR-II)

Run by Reprieve Cardiovascular, Inc · NCT06898515 · Data updated 2026-11-12

This trial will test whether the Reprieve System removes excess fluid more effectively than standard IV diuretics in adults hospitalized with acute decompensated heart failure who are at risk for diuretic resistance.

More Acute Decompensated Heart Failure trials

Quick facts

Study typeInterventional
Ages22 Years and up
SexAll
Enrollment400 (estimated)
SponsorReprieve Cardiovascular, Inc
Industry-sponsored
Locations50 sites (Irvine, California and 49 other locations)
StatusRecruiting
StartedJuly 28, 2025
Main results expectedAugust 2027
Study endsDecember 2027
Registry record updatedOctober 13, 2026
Trial IDNCT06898515 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults (≥22 years) hospitalized with acute decompensated heart failure, more than about 10 lb over dry weight, on outpatient loop diuretics, and showing signs that they may be resistant to standard diuretics (low urine output after IV diuretic, low spot urine sodium, or hypochloremia).

Probably not a fit

Patients unlikely to benefit include those not at risk for diuretic resistance, those with urologic contraindications to catheter placement, or those who are hemodynamically unstable or expected to have very short admissions.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This phase 3 interventional trial compares device-guided decongestive therapy using the Reprieve System to optimal diuretic therapy (including IV furosemide) in adults admitted with acute decompensated heart failure. Eligible participants are adults expected to remain hospitalized >24 hours, on a chronic loop diuretic, at least 10 lb above dry weight, and meeting predefined markers of elevated diuretic resistance risk (low urine output after IV diuretic, low spot urine sodium, or hypochloremia). Participants receive either the Reprieve System intervention or standard care with diuretics and are monitored for measures of decongestion, urine output, safety, and clinical outcomes. The study is being conducted at several California medical centers and aims to determine whether the device provides more efficient fluid removal than current diuretic strategies.

Why it matters

Potential benefit: If successful, the Reprieve System could help remove excess fluid faster and improve symptoms and possibly shorten hospital stays for patients with ADHF who respond poorly to diuretics.

How similar studies have gone: Earlier-stage and device-assisted decongestion studies have shown some promising signals but definitive large-scale phase 3 evidence for device-based approaches remains limited.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Diagnosis of HF with expected hospitalization \>24 hours, with \>1 new or worsening symptom and \>2 physical examination, laboratory, or invasive findings of HF, and receiving or with plans to receive a HF-specific treatment
2. ≥10 lb. (4.5 kg) above dry weight as estimated by health care provider.
3. Current outpatient prescription for daily loop diuretic.
4. Participants ≥ 22 years of age able to provide informed consent and comply with study procedures.
5. Elevated risk of diuretic resistance, as indicated by at least one of the following: Baseline hypochloremia OR Urine output \<1L in the 6 hours following IV loop diuretic \>=40 mg furosemide equivalent OR Spot urine sodium \<100 mmol/L 1-2 hours after IV loop diuretic \>= 40 mg furosemide equivalent

Exclusion Criteria:

1. Urologic issues that would predispose the participant to a high rate of urogenital trauma or infection with catheter placement or known inability to place a Foley catheter.
2. Hemodynamic instability as defined by any of the following: sustained systolic blood pressure \<90 mmHg for \>15 minutes within the past 48 hours, use of IV vasopressors or inotropes within past 48 hours, and/or current or previous mechanical circulatory support within the last week.
3. Uncontrolled arrhythmias defined as sustained HR \>130 beats/min for \>10 minutes within the past 48 hours.
4. Severe lung disease with chronic home oxygen requirement \>2L/min.
5. Acute infection with evidence of systemic involvement (e.g., clinically suspected infection with fever or elevated serum white blood cell count).
6. Estimated glomerular filtration rate (eGFR) \<25 ml/min/1.73m2 (calculated with either MDRD or CKD-EPI) or current use of renal replacement therapy (RRT).
7. Significant left ventricular outflow obstruction, severe uncorrected complex congenital heart disease, known severe stenotic valvular disease, severe infiltrative or constrictive cardiomyopathy or other diagnosis that would make aggressive decongestion unsafe.
8. Current or recent (\< 30 days) type I myocardial infarction (e.g., acute coronary syndrome such as NSTEMI or STEMI from plaque rupture), coronary artery bypass surgery, or stroke. An isolated troponin elevation (e.g., from volume overload or demand ischemia) is not a reason for exclusion.
9. Severe electrolyte abnormalities (e.g., serum potassium \<3.0 mEq/L, magnesium \<1.3 mEq/L or sodium \<125 mEq/L). Note: These are based on baseline/screening labs. Participants whose electrolyte levels are repleted cannot be reassessed for inclusion in the trial.
10. Other concomitant disease or condition the investigator believes will make it difficult to follow instructions or comply with study procedures and/or follow-up visits, including expected prolonged hospitalization for reasons other than decongestive therapy
11. Currently enrolled in an interventional trial (observational studies are permitted).
12. Life expectancy less than 6 months.
13. Women who are pregnant or breastfeeding.

Where it's running

  • University of California Irvine
    Irvine, California, United States
    Recruiting
  • Memorial Care Long Beach
    Long Beach, California, United States
    Recruiting
  • UC Davis Medical Center
    Sacramento, California, United States
    Recruiting
  • University of Florida
    Gainesville, Florida, United States
    Recruiting
  • Piedmont Atlanta Hospital
    Atlanta, Georgia, United States
    Recruiting
  • Wellstar Hospital
    Atlanta, Georgia, United States
    Recruiting
Show 44 more locations
  • Piedmont Augusta Hospital
    Augusta, Georgia, United States
    Recruiting
  • Northeast Georgia Medical Center
    Gainesville, Georgia, United States
    Recruiting
  • University of Kansas Medical Center
    Kansas City, Kansas, United States
    Recruiting
  • University of Louisville Hospital
    Louisville, Kentucky, United States
    Recruiting
  • Trinity Health Ann Arbor Hospital
    Ann Arbor, Michigan, United States
    Recruiting
  • Corewell Health Butterworth Hospital
    Grand Rapids, Michigan, United States
    Recruiting
  • Corewell William Beaumont University Hospital
    Royal Oak, Michigan, United States
    Recruiting
  • Minneapolis Heart Institute
    Minneapolis, Minnesota, United States
    Recruiting
  • University of Mississippi
    Jackson, Mississippi, United States
    Recruiting
  • St. Louis VA
    St Louis, Missouri, United States
    Recruiting
  • Washington University
    St Louis, Missouri, United States
    Recruiting
  • Duke University
    Durham, North Carolina, United States
    Recruiting
  • Moses H. Cone Memorial Hospital
    Greensboro, North Carolina, United States
    Recruiting
  • Atrium Health Wake Forest Baptist Medical Center
    Winston-Salem, North Carolina, United States
    Recruiting
  • Lindner Center at Christ Hospital
    Cincinnati, Ohio, United States
    Recruiting
  • UH Cleveland Medical Center
    Cleveland, Ohio, United States
    Recruiting
  • Ohio State University Hospital
    Columbus, Ohio, United States
    Recruiting
  • Oklahoma Heart Hospital
    Oklahoma City, Oklahoma, United States
    Recruiting
  • University of Pennsylvania
    Philadelphia, Pennsylvania, United States
    Recruiting
  • Prisma Health Greenville Memorial Hospital
    Greenville, South Carolina, United States
    Recruiting
  • Vanderbilt University Medical Center
    Nashville, Tennessee, United States
    Recruiting
  • Baylor Scott and White
    Dallas, Texas, United States
    Recruiting
  • Baylor College of Medicine Ben Taub Hospital
    Houston, Texas, United States
    Recruiting
  • Houston Methodist
    Houston, Texas, United States
    Recruiting
  • Memorial Hermann-Texas Medical Center
    Houston, Texas, United States
    Recruiting
  • Inova Fairfax Medical Campus
    Falls Church, Virginia, United States
    Recruiting
  • VCU Medical Center
    Richmond, Virginia, United States
    Recruiting
  • Aurora St. Luke's Medical Center
    Milwaukee, Wisconsin, United States
    Recruiting
  • Universitätsklinikum Gießen (UKGM)
    Giessen, Germany
    Recruiting
  • Hannover University Hospital
    Hanover, Germany
    Recruiting
  • University Hospital Heidelberg
    Heidelberg, Germany
    Recruiting
  • Universitaria delle Marche
    Ancona, Italy
    Recruiting
  • ASST Azienda Ospedaliera Papa Giovanni XXIII
    Bergamo, Italy
    Recruiting
  • ASST Niguarda Great Metropolitan Hospital
    Milan, Italy
    Recruiting
  • Medical University of Białystok
    Bialystok, Poland
    Recruiting
  • Medical University of Lodz
    Lodz, Poland
    Recruiting
  • University Hospital Wroclaw
    Wroclaw, Poland
    Recruiting
  • Vall d'Hebron University Hospital
    Barcelona, Spain
    Recruiting
  • Hospital de Bellvitge
    Barcelona, Spain
    Recruiting
  • Hospital Ramon y Cajal
    Madrid, Spain
    Recruiting
  • Puerta de Hierro Majadahonda University Hospital
    Madrid, Spain
    Recruiting
  • Clínico Universitario de Valencia
    Valencia, Spain
    Recruiting
  • Hospital General Valencia
    Valencia, Spain
    Recruiting
  • Advocate Christ Medical Center
    Oak Lawn, Illinois, United States
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.