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ReDS-guided Decongestion Strategy in Patients Hospitalized for Heart Failure

ReDS-guided Decongestion Strategy in Patients Hospitalized for Heart Failure: the ReDS-SAFE HF II Trial

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07484009
Acronym
ReDS-SAFE HF 2
Enrollment
1014
Registered
2026-03-19
Start date
2026-01-29
Completion date
2027-08-31
Last updated
2026-03-19

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Heart Failure (AHF), Heart Failure (for Example, Fluid Overload), Heart Failure Hospitalization

Keywords

Heart failure, Congestion, ReDS, Fluid Overload, Randomized Clinical Trial

Brief summary

This clinical trial aims to determine whether a ReDS-guided treatment strategy is superior to the current standard of care for adults hospitalized with heart failure. Additionally, the study will evaluate the safety and cost-effectiveness of this approach. The study seeks to answer the following key questions: 1. Does the ReDS-guided strategy reduce the risk of cardiovascular events during the first month following hospital discharge? 2. What is the safety profile of this treatment strategy? Researchers will compare the ReDS-based strategy against the current standard of care. All participants will: * Undergo daily assessments using the ReDS device throughout their hospitalization. * Attend two follow-up visits post-discharge, scheduled at 2 weeks and 30 days.

Interventions

The ReDS system consists of 2 sensors that are placed (sitting or supine) on the front (infraclavicular) and back (below the scapula) of the patient's right hemithorax and in 45 seconds accurately quantifies the proportion of fluid in the lung. The sensors are connected via 1 cable to a touchscreen monitor that easily guides the measurement process and stores this information. The accuracy of this technology has been validated with high-resolution chest computed tomography and invasive hemodynamic measurements with a Swan-Ganz catheter. Normal ReDS values range between 20% and 35% (i.e., 20-35% of the lung would be fluid). Above 35% is considered congestive, whereas below 20% the lung would be "dry" or dehydrated.

DEVICEBlinded ReDS data

The responsible physician will not have access to the ReDS values and will adjust the treatment according to their clinical judgment and local practices. Discharge can be given if the clinical stability criteria are met.

Sponsors

Fundacion para la Investigacion Biomedica del Hospital Universitario Ramon y Cajal
Lead SponsorOTHER
Hospital Universitario Ramon y Cajal
CollaboratorOTHER
Hospital Universitario 12 de Octubre
CollaboratorOTHER
Hospital San Carlos, Madrid
CollaboratorOTHER
Hospital Universitario Fundación Jiménez Díaz
CollaboratorOTHER
Hospital Universitario La Paz
CollaboratorOTHER
Hospital General Universitario Gregorio Marañon
CollaboratorOTHER
Hospital Clinic of Barcelona
CollaboratorOTHER
Hospital Vall d'Hebron
CollaboratorOTHER
Hospital Universitari de Bellvitge
CollaboratorOTHER
Hospital del Mar
CollaboratorOTHER
Hospital Sant Joan Despí Moisès Broggi
CollaboratorUNKNOWN
Hospital Arnau de Vilanova
CollaboratorOTHER
Hospital Universitario Virgen de la Arrixaca
CollaboratorOTHER
Complejo Hospitalario Universitario de Santiago
CollaboratorOTHER
Salamanca University Hospital
CollaboratorOTHER
Complejo Hospitalario Toledo
CollaboratorOTHER
Hospital Universitario Virgen Macarena
CollaboratorOTHER
Hospital Universitario Reina Sofia de Cordoba
CollaboratorOTHER_GOV
Hospital Universitario Virgen de la Victoria
CollaboratorOTHER
Hospital Universitario Marqués de Valdecilla
CollaboratorOTHER
Hospital Clínico Universitario de Valencia
CollaboratorOTHER
Centro Nacional de Investigaciones Cardiovasculares Carlos III
CollaboratorUNKNOWN
Puerta de Hierro University Hospital
CollaboratorOTHER
La Princesa University Hospital Madrid
CollaboratorUNKNOWN
University Hospital of Girona Dr. Josep Trueta
CollaboratorNETWORK
Joan XXIII University Hospital
CollaboratorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Caregiver, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Hospitalized due to heart failure as the main reason, including the presence of symptoms and signs of congestion, regardless of the left ventricular ejection fraction (LVEF). 2. NT-proBNP greater than 1000 pg/L or BNP greater than 300 pg/L upon admission.

Exclusion criteria

1. Height less than 150 cm or greater than 190 cm or body mass index (BMI) less than 22 or greater than 39, conditions where the use of ReDS is not approved. 2. Patients requiring inotropes (levosimendan is allowed) or vasopressors upon admission, with mechanical support, or heart transplant recipients. 3. Any malformation or variant affecting the right lung anatomy (e.g., a pacemaker). 4. Patients with any heart disease requiring a planned surgical intervention (CABG, valve disease, or other) or percutaneous (TAVR, STE-ACS, mitral or tricuspid valve repair, CRT) during the clinical trial. 5. Chronic kidney disease with a GFR \<20 or on hemodialysis. 6. Life expectancy less than 12 months due to non-cardiological origin. 7. Participation in another clinical trial with intervention.

Design outcomes

Primary

MeasureTime frameDescription
Number of participants with an efficacy event at 1 month after dischargeFrom randomization to the end of follow-up at 1 month after hospitalization dischargeThe primary outcome measure is the combined event rate of all-cause mortality, HF readmission, and/or unexpected HF visits requiring diuretic adjustment at 1 month after discharge
Number of participant with a safety event at 1 month after dischargeFrom randomization to the end of follow-up at 1 month after hospitalization dischargeThe primary outcome measure is the combined event rate of symptomatic systolic hypotension (\<90 mmHg), electrolyte imbalances (potassium below 3 or above 5.5 meq/L), and/or worsening of renal function compared to the baseline visit at the first post-discharge outpatient visit (at least 50% reduction in glomerular filtration rate).

Secondary

MeasureTime frameDescription
Cost-efficacy outcome measureLength of stay of index admissionLength of stay and cost of ReDS device

Countries

Spain

Contacts

CONTACTJesús Álvarez-García, MD, PhD
jalvarezg82@gmail.com34 667495661
CONTACTCristina Rey Iborra, BSN
creyi@salud.madrid.org
PRINCIPAL_INVESTIGATORJesús Álvarez-García, MD, PhD

Ramón y Cajal University Hospital, Madrid, Spain

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 20, 2026