Furosemide Stress Test to Predict Successful Liberation From RRT (FST-RRT)

August 11, 2025 updated by: Antoine Schneider, Centre Hospitalier Universitaire Vaudois

Evaluation of the Furosemide Stress Test to Predict Successful Liberation From Renal Replacement Therapy in Critically Ill Patients

The proposed study will evaluate if a standardised dose of furosemide administered in the 12 hours after RRT liberation can predict successful liberation in critically ill patients. The dose that will be administered is in accordance with the prescribing information.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

Response to furosemide administration is commonly used in clinical practice to assess a patient's potential for RRT liberation. However, this administration is not standardized and practices varies greatly. Rapid recognition of unsuccessful RRT liberation is crucial to avoid further complications such as fluid overload or acid-base and electrolyte disorders. The FST corresponds to the intravenous administration of 1 mg/kg (1.5 mg/kg in previously exposed patients) of furosemide and the assessment of resulting diuresis in the following two hours. FST is able to predict progression from AKI stage I and II to stage III with a high sensitivity (87.1%) and specificity (84.1%), area under the ROC curve 0.87. However, the ability of FST to predict RRT liberation has never been formally assessed.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
52

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Switzerland
    • Vaud
      • Lausanne, Vaud, Switzerland, 1011
        • Centre Hospitalier Universitaire Vaudois

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

ICU patients receiving continuous RRT for AKI

Description

Inclusion Criteria:

  • Receiving continuous or intermittent RRT for AKI
  • Having an indwelling urinary catheter
  • Clinical decision by physician in charge to attempt RRT liberation
  • lnformed consent signed by the patient himself / legal representative or authorization received from independent physician

Exclusion Criteria:

  • Electrolyte disturbances or hemodynamic instability precluding the use of furosemide (sodium > 155 mmol/L and/or potassium < 3.0 mmol/L and/or metabolic alkalosis > 7.50 and/or mean arterial pressure < 60 mmHg)
  • Known furosemide allergy
  • Urine output ≥ 100 mL/h for at least two hours
  • Recent (< 24 hours) FST
  • Known end-stage chronic renal disease at ICU admission
  • Withdrawal of life support decision taken before inclusion
  • Patient already participating in conflicting research study
  • Patient having already participated in this current study
  • Any other contraindication of furosemide

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Case-Only
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Critically ill patients undergoing RRT
Patients admitted to participating ICU and receiving renal replacement therapy.
Drug: Furosemide stress test
The FST corresponds to the intravenous single-dose administration of 1 mg/kg (1.5 mg/kg in previously exposed patients) of furosemide and the assessment of resulting diuresis in the following two hours. In the 12 hours following the first RRT liberation, a FST will be performed. The test will be considered positive if urinary output is ≥200 mL in the two hours following furosemide administration.
Other Names:
  • FST

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Successful liberation of RRT within 72 hours after FST
Time Frame: within 72 hours
No renal replacement therapy administered
within 72 hours

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Successful liberation of RRT at ICU discharge
Time Frame: At time of ICU discharge, assessed up to 90 days post inclusion
No renal replacement therapy administered
At time of ICU discharge, assessed up to 90 days post inclusion
Successful liberation of RRT at hospital discharge
Time Frame: At time of hospital discharge, assessed up to 90 days post inclusion
No renal replacement therapy administered
At time of hospital discharge, assessed up to 90 days post inclusion
Adverse events associated with the intervention
Time Frame: within 6 hours
(electrolyte disturbances, hypotension)
within 6 hours

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Centre Hospitalier Universitaire Vaudois

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Antoine Schneider, MD PhD, Centre Hospitalier Universitaire Vaudois

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 17, 2023

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 4, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
July 9, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 3, 2022

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 9, 2022

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 10, 2022

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 12, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 11, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 2022-01826

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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