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CompletedNCT03251131REVERSE-AKIUpdated Dec 14, 2020

REVERSE-AKI Randomized Controlled Pilot Trial

A Phase 2 interventional study of Restrictive fluid management in Acute Kidney Injury and Critical Illness, sponsored by Helsinki University Central Hospital. Completed at 7 sites in 5 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2020-12-14.

Sponsored by Helsinki University Central Hospital · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
100
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 23 studies in Acute Kidney Injury with a site in Australia — 3 open to participants now, 4 under way, none of them phase 3. Acute Kidney Injury · Australia.

Enrollment
10th of 18
100 · median 208
Started
2017
the only one that year
Phase 2
6 of 23
1 open now
Registered
13th of 23
by date
Lead sponsor
2 of 23
Helsinki University Central Hospital

Among the 23 studies in Acute Kidney Injury with a site in Australia, this one is the 10th largest by enrollment of the 18 interventional ones that give a count, is the only one that started in 2017, is one of 6 in phase 2, and was the 13th registered.

Acute Kidney Injury

1,691 studies on the registry are indexed under Acute Kidney Injury; 394 are open to participants now.

Browse Acute Kidney Injury studies →

Open to participants now

3 of the 23 studies in Acute Kidney Injury with a site in Australia are open now. Recruiting first, the newest first:

All 3 open studies →

A study can be open while its sites in Australia have not opened yet or have stopped. Only those recruiting at a site in Australia →

Who these studies take

Of the 230 Acute Kidney Injury studies recruiting now, 161 (70%) set no upper age limit and 36 (16%) stop at 75 or younger; 22 take children under 18; 25 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

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02

Study summary

Observational studies among patients with acute kidney injury (AKI) have shown an association with fluid accumulation and increased mortality. Trials among other subgroups of critically ill patients have demonstrated that restricting fluid input after the initial resuscitation appears safe.

The objective if this study is to determine whether a fluid restrictive treatment regimen will lead to a lower cumulative fluid balance at 72 hours from randomization in critically ill patients with AKI and whether this approach is safe and feasible.

Read the detailed description

Acute kidney injury (AKI) is common in the critically ill and associates with adverse outcomes. Patients with AKI are frequently have low urine output and are at high risk of developing fluid overload. Fluid overload has been associated with an increased risk for mortality in such patients. Previous trials in critically ill patients found that a 'restrictive fluid therapy' after resuscitation was safe. Implementing a restrictive fluid therapy approach in patients with AKI may also be of benefit. To date, however, no randomized trial has been performed to evaluate the safety and feasibility of implementing a 'restrictive fluid therapy' approach compared to standard fluid therapy in patients with AKI.

In this pilot randomized controlled trial we will evaluate the implementation of a fluid restrictive approach, compared to standard therapy, in adult critically ill patients with acute kidney injury.

03

Conditions studied

  • Acute Kidney Injury
  • Critical Illness
04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. 18-years or older and admitted to critical care with an arterial line in place
  2. The patient has been in critical care for at least 12 hours but no more than 72 hours
  3. The patient has AKI but is not receiving acute RRT:

    For the purpose of the study AKI is defined the by the following criteria:

    1. Increase in serum creatinine over 1.5-times above baseline without a decline of 27umol/l or more from the last preceding measurement (at least 12 hours apart) AND/OR
    2. Overall urine output less than 0.5ml/kg/h (or 6ml/kg) for the previous 12h (with urine catheter in place for the period)
  4. The patient is judged by the treating clinician not to be intravascularly hypovolemic
  5. The patient is likely to remain in critical care for 48 hours after randomization

Exclusion criteria

Exclusion Criteria:

  1. Active bleeding necessitating transfusion
  2. Maintenance fluid therapy is necessary due to diabetic ketoacidosis, non-ketotic coma, severe burns or other clinical reason determined by the medical staff
  3. Need for RRT due to intoxication of a dialyzable toxin
  4. Commencement of RRT is expected in the next 6 hours
  5. On chronic renal replacement therapy (maintenance dialysis or renal transplant)
  6. Presence or a strong clinical suspicion of parenchymal AKI (for example glomerulonephritis, vasculitis, acute interstitial nephritis), or post-renal obstruction
  7. Severe hyponatremia (Na \<125mmol/L) or hypernatremia (Na >155mmol/L)
  8. Need for extracorporeal membrane oxygenation or molecular absorbent recirculating system (MARS-therapy)
  9. Pregnant or lactating
  10. Patients who are not to receive full active treatment
  11. No baseline creatinine available
  12. Lack of consent
  13. The patient has been enrolled in another trial where co-enrollment is not feasible
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
100 participants (actual)

Study arms

  • Experimental
    Restrictive fluid management

    Restrictive fluid management Targeting a negative or maximum 300ml positive daily fluid balance.

    Other: Restrictive fluid management

  • No intervention
    Standard therapy

    Randomized allocation of standard care at the clinician's discretion in accordance with current best practice.

Interventions

  • OtherRestrictive fluid management

    Daily fluid input is restricted to drugs and nutrition. Fluid boluses and blood products can be given if clinically indicated. Matching fluid output to fluid input whenever possible using diuretics if needed, and additionally, if clinically necessary and plausible, commencing renal replacement therapy. If renal replacement therapy is not deemed clinically desirable, acceptance of a less than targeted fluid balance.

06

What researchers measure

Primary outcomes

  1. Cumulative fluid balance

    Time frame: 72 hours

Secondary outcomes

  1. Duration of acute kidney injury

    Defined according to Kidney Disease: Improving Global Outcomes criteria

    Time frame: ICU discharge/14 days

  2. Number of patients requiring renal replacement therapy

    Time frame: 14 days

  3. Cumulative fluid balance

    Time frame: 24 hours

  4. Cumulative fluid balance

    Time frame: ICU discharge/ 7 days

  5. Cumulative dose of diuretics

    Time frame: ICU discharge/ 7 days

Other outcomes

  1. Number of patients with serious adverse events and reactions

    a Ventricular tachycardia/fibrillation b. New onset of atrial fibrillation requiring medication/defibrillation c. Ischemic events i. Acute myocardial infarction ii. Cerebral ischemia verified by CT or MRI scan. iii. Intestinal ischemia verified by endoscopy or open surgery. iv. Acute peripheral limb ischemia d. Radiologically diagnosed pulmonary edema e. Adverse events related to renal replacement therapy and diuretics use f. Frequency of hypokalaemia (serum K \<3.5mmol/L) g. Frequency of hypomagnesaemia (serum Mg \<0.8mmol/L) h. frequency of serum pH \>7.5 i. other

    Time frame: 7 days

  2. Mechanical ventilation free days alive

    Time frame: 14 days

  3. Vasopressor free days and alive

    Time frame: 14 days

  4. Renal replacement therapy free days and alive

    Time frame: 90 days

  5. Dialysis dependence

    Time frame: 90 days

  6. All-cause mortality

    Time frame: 90 days

07

Study locations

7 sites
  • Austin Hospital
    Melbourne, Victoria 3048, Australia
  • Canberra Hospital
    Canberra, Australia
  • Ghent University Hospital
    Ghent, Belgium
  • Helsinki University Hospital
    Helsinki, Finland
  • Lausanne University Hospital
    Lausanne, Switzerland
  • Guy's and St Thomas Hospital
    London, United Kingdom
  • Royal London Hospital, Barts Health NHS Trust
    London, United Kingdom
08

References and documents

Publications

  • Vaara ST, Ostermann M, Selander T, Bitker L, Schneider A, Poli E, Hoste E, Joannidis M, Zarbock A, van Haren F, Prowle J, Pettila V, Bellomo R. Protocol and statistical analysis plan for the REstricted fluid therapy VERsus Standard trEatment in Acute Kidney Injury-REVERSE-AKI randomized controlled pilot trial. Acta Anaesthesiol Scand. 2020 Jul;64(6):831-838. doi: 10.1111/aas.13557. Epub 2020 Feb 26. PubMed 32022904 ↗
09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Nov 2017 to primary completion in Jan 2020, 26 months.

Of 39 non-industry phase 2 interventional studies under Acute Kidney Injury, half reached primary completion within 30 months of starting (the median), counting those still running; a quarter within 13 and three quarters within 42. This study's 26 months is below that.

Counting every sponsor, half of 57 studies reached it within 29 months; a quarter within 16 and three quarters within 42.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 12, 2017
First posted
Aug 16, 2017
StartActual
Nov 8, 2017
Primary completionActual
Jan 31, 2020
CompletionActual
Apr 30, 2020
Last update
Dec 14, 2020
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 14, 2020, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03251131
Responsible party
Suvi Vaara (MD, PhD, Helsinki University Central Hospital) — Principal investigator
First posted
Aug 16, 2017
Start date
Nov 8, 2017
Primary completion
Jan 31, 2020
Completion
Apr 30, 2020
Last update
Dec 14, 2020

Study contacts

Suvi Vaara, MD, PhD
principal investigator · Division of Intensive Care Medicine, Department of Anesthesiology, Intensive Care and Pain Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
Marlies Ostermann, MD, PhD
principal investigator · Department of Critical Care and Nephrology, King's College London, Guy's and St Thomas Hospital, Foundation Hospital, London

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Dec 2020. You cannot join it, but the record below documents what was studied.

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