Comparison · NCT01424150-19802313
Liberal vs Restrictive: Acute Kidney Injury
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
2 sourcestrial-comparisons-2026-03-23-0.1.0
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ConductScience Library. Liberal vs Restrictive: Acute Kidney Injury. Trial comparisons, record NCT01424150-19802313. Release trial-comparisons-2026-03-23-0.1.0, 23 Mar 2026. https://conductscience.org/library/comparisons/NCT01424150-19802313
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Measures6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note |
|---|---|---|---|---|---|
| Risk in group 1 | 0.05 | 0.0399 | 0.0625 | wilson | |
| Risk in group 2 | 0.0859 | 0.0725 | 0.102 | wilson | |
| Risk difference, group 1 minus group 2 | -0.0359 | -0.0545 | -0.0176 | newcombe hybrid score | |
| Risk ratio, group 1 over group 2 | 0.582 | 0.44 | 0.771 | log | |
| Odds ratio, group 1 over group 2 | 0.56 | 0.415 | 0.756 | log | |
| Number needed to treat, for one fewer participant with the outcome on Liberal than on Restrictive | 27.9 | 18.4 | 56.9 | from the risk difference interval |
Source ClinicalTrials.gov
Groups2
Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code |
|---|---|---|---|---|---|
| Group 1 | Liberal | At the commencement of surgery a bolus of Hartmann's balanced salt crystalloid 10 ml/kg followed by 8 ml/kg/h will be administered until the end of surgery. A maintenance infusion will then continue at 1.5 ml/kg/h, for at least 24 hours, but this can be reduced postoperatively if there is evidence of fluid overload and no hypotension, and increased if there is evidence of hypovolaemia or hypotension. Alternative fluid types (crystalloid, dextrose, colloid) and electrolyte supplements will be allowed postoperatively in order to account for local preferences and patient biochemistry, for which we will collect data.~Liberal fluid therapy: Liberal protocol group is designed to provide approximately 6.0L per day. | 72 | 1,439 | OG000 |
| Group 2 | Restrictive | Will provide less than 2.0 L water and 120 mmol sodium per day. Induction of anaesthesia will limit IV bolus fluid to ≤5 ml/kg; no other IV fluids will be used at the commencement of surgery (unless indicated by goal-directed device \[see below\]). Hartmann's balanced salt crystalloid 5 ml/kg/h will be administered until the end of surgery, and bolus colloid/blood used intraoperatively to replace blood loss (ml for ml); then an infusion at 1 ml/kg/h until expedited cessation of IV fluid therapy within 24 hours. The rate of postoperative fluid replacement can be reduced if there is evidence of fluid overload and no hypotension, and can be increased if there is hypotension AND evidence of hypovolaemia.~Restrictive fluid therapy: Restrictive protocol group is designed to provide less than 2.0 L water and 120 mmol sodium per day. | 124 | 1,443 | OG001 |
Source ClinicalTrials.gov
Outcome
- Type
- SECONDARY
- Title
- Acute Kidney Injury
- Description
according to The Kidney Disease: Improving Global Outcomes (KDIGO) group criteria, but not urine output - for Stage 2 or worse AKI defined as at least 2-fold increase in creatinine, or estimated GFR decrease \>50%.(73) We also plan to report renal replacement therapy up to 90 days after surgery. Because a restrictive IV fluid regimen may artificially elevate serum creatinine due to a smaller dilutional effect from less IV fluids, we therefore calculated adjusted creatinine by first estimating the volume of distribution for creatinine as equal to total body water (assumed to be 60% of body weight, expressed in mL).
- Time frame
- 30 days postoperative
- Population
Source ClinicalTrials.gov
Trial
- Title
- REstrictive Versus LIbEral Fluid Therapy in Major Abdominal Surgery: RELIEF Study
- NCT number
- NCT01424150
- Phases
- NA
- Conditions
- Abdominal Surgery
- Interventions
- Liberal fluid therapy, Restrictive fluid therapy
- Lead sponsor
- Bayside Health
- Results first posted
- 2025-01-24
- Results on ClinicalTrials.gov
- https://clinicaltrials.gov/study/NCT01424150?tab=results
Source ClinicalTrials.gov
Source
- Release
- trial-comparisons-2026-03-23-0.1.0
- Release manifest SHA-256
- f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57
- AACT copy
- 2026-03-23
- Tables read
- outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet
Source ClinicalTrials.gov
Sources 2
- ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
- ClinicalTrials.govNo license stated
Each source's terms
- ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
- ClinicalTrials.govnone stated
ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
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