Comparing two medications to prevent kidney injury after major surgery
Official title: Norepinephrine vs Phenylephrine as the First-line Vasopressor to Prevent Postoperative Acute Kidney Injury After Major Non-cardiac Surgery
Run by University of California, San Francisco · NCT06802224 · Data updated 2026-11-12
This study is testing which medication, norepinephrine or phenylephrine, works better to prevent kidney injury in adults having major surgery.
Quick facts
| Phase | Phase 4 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 18000 (estimated) |
| Sponsor | University of California, San Francisco Academic / other |
| Locations | 10 sites (San Francisco, California and 9 other locations) |
| Status | Recruiting |
| Started | April 1, 2025 |
| Main results expected | July 2028 |
| Study ends | July 2028 |
| Registry record updated | May 26, 2026 |
| Trial ID | NCT06802224 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older undergoing major non-cardiac surgery lasting two hours or more who require intravenous vasopressors.
✕Probably not a fit
Patients undergoing cardiac surgery, organ transplantation, or those with severe pre-existing kidney conditions may not benefit from this study.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This clinical trial aims to determine which vasopressor medication, norepinephrine or phenylephrine, is more effective in preventing acute kidney injury following major non-cardiac surgery. It employs a pragmatic, cluster-randomized, crossover design across multiple hospitals, where centers will alternate between using each medication based on the month. Data will be collected from routine clinical care without additional lab tests, focusing on the impact of these medications on patient outcomes during surgery. The study will involve patients aged 18 and older who require intravenous vasopressors during surgery lasting two hours or more.
Why it matters
Potential benefit: If successful, this study could lead to improved kidney health and recovery outcomes for patients undergoing major surgery.
How similar studies have gone: Other studies have explored the use of vasopressors in surgical settings, but this specific comparison of norepinephrine and phenylephrine is novel.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age 18 years or older * Surgery under general anesthesia with a surgery duration of 2 hours or more * Received intravenous vasopressors during surgery Exclusion Criteria: * Cardiac surgery * Extra-corporeal membrane oxygenation * Organ transplantation * Obstetric procedures * Procedures on the kidney * Outpatient procedures * Already receiving NE or PE or inotropes before induction of anesthesia (at the time of anesthesia start) * American Society of Anesthesiologists physical status classification 5 or 6 * Patient for whom a local protocol recommends a specific first line vasopressor * Most recent documented estimated glomerular filtration rate (eGFR) \< 15 mL/min/1.73m\^2 or preoperative renal replacement therapy within 60 days before surgery * Patients who do not have a preoperative creatinine value within 60 days before surgery * Alive patients who do not have a postoperative creatinine value
Where it's running
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University of California, San Francisco
San Francisco, California, United States Recruiting -
University of Maryland
College Park, Maryland, United States Recruiting -
University of Michigan
Ann Arbor, Michigan, United States Recruiting -
Henry Ford Health
Detroit, Michigan, United States Recruiting -
Duke University Medical Center
Durham, North Carolina, United States Recruiting -
Wake Forest University School of Medicine
Winston-Salem, North Carolina, United States Recruiting
Show 4 more locations
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UT Southwestern Medical Center
Dallas, Texas, United States Recruiting -
University of Virginia
Charlottesville, Virginia, United States Recruiting -
University of Washington
Seattle, Washington, United States Recruiting -
University Health Network
Toronto, Ontario, Canada Recruiting
Study contacts
- Principal investigator: Sachin Kheterpal, MD MBA — University of Michigan
- Study coordinator: Matthieu Legrand, MD PhD
- Email: matthieu.legrand@ucsf.edu
- Phone: 415-476-9035
Similar studies
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We test whether a stepwise prediction model using routine clinical data, the type and timing of liver blood-flow control (SPVO vs Pringle), and simple blood markers can predict heart injury (MINS) after major hepatobiliary surgery in adults.
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.