- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04789330
Norepinephrine vs Phenylephrine During General Anesthesia (VEGA-1)
The Choice of Vasopressor for Treating Hypotension During General Anesthesia: a Pilot Pragmatic Cluster Cross-over Randomized Trial (the VEGA-1 Trial)
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Postoperative mortality is considered the third leading cause of death worldwide. Hemodynamic instability and specifically hypotension during surgery have been linked to increased postoperative morbidity and mortality. Episodes of hypotension during surgery are associated with an increased risk of acute kidney injury, stroke, cardiac events and death. Treating or preventing hypotension during general anesthesia and major surgery was found to improve outcomes. At this time, it is unclear what is the best vasopressor to maintain blood pressure during surgery.
Hypotension during anesthesia and surgery is commonly treated with vasopressors such as phenylephrine (PE), a synthetic pure vasoconstrictor, or norepinephrine (NE), which has both inotropic and vasoconstrictor activity. NE increases cardiac output and increases cardio-vascular coupling due to alpha-agonist effects compared to PE, a purely vasoconstrictive agent.
The investigators hypothesize that norepinephrine will be superior to phenylephrine. The effect size is expected to be modest, therefore requiring a large sample size, and will vary between subgroups determined by patients' individual characteristics.
This pilot trial (VEGA-1) will allow to 1) test the feasibility of the study using a cross-over cluster randomized controlled trial and 2) estimate the effect size of the use of NE or PE on post-operative outcome in the overall population but also investigate the Heterogeneity in Treatment Effect (HTE) of the drugs among subgroups or clusters of patients for designing a larger trial.
Design: pragmatic, cluster-randomized, open-labeled, multiple-crossover trial across hospital from University of California, San Francisco (UCSF) and University of California, Los Angeles (UCLA). Centers will be assigned to use either PE or NE for the first-line intravenous infusion of vasopressor in the OR. Data will be collected in routine clinical care and automatically extracted from the electronic health record (EHR).
Primary endpoint:
- Separation between study groups in the first line vasopressor administration (% of cases with appropriate vasopressor with respect to group attribution).
Secondary endpoints:
- Death within 30 days
- Acute kidney injury defined by the KDIGO definition
- Severe acute kidney injury (stage 2 or 3 of the KDIGO definition)
- Myocardial Injury following non-cardiac surgery (MINS)
- Adverse cardio-renal events
- Hospital length of stay
- Rehospitalization within 30 days
Study Type
Enrollment (Actual)
Phase
- Phase 4
Contacts and Locations
Study Locations
-
-
California
-
Los Angeles, California, United States, 90095
- Ronald Reagan UCLA Medical Center
-
San Francisco, California, United States, 94110
- Zuckerberg San Francisco General Hospital
-
San Francisco, California, United States, 94115
- UCSF Medical Center at Mount Zion
-
San Francisco, California, United States, 94158
- UCSF Medical Center at Mission Bay
-
San Francisco, California, United States, 94143
- UCSF Medical Center at Parnassus
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- age 18 Years and older
- Surgery under general anesthesia and requiring infusion of vasopressors to maintain the mean arterial pressure.
- Surgery duration>2 hours
Exclusion Criteria:
- Cardiac surgery
- Patients on ECMO
- Organ transplantation
- Outpatient (come-and-go surgery)
- Obstetric procedures
- Patient already receiving NE or PE before induction of anesthesia
- Patients transferred immediately (i.e. within 24 hours) after surgery to another hospital.
- Patients with severe trauma
Study Plan
How is the study designed?
Design Details
- Primary Purpose: SUPPORTIVE_CARE
- Allocation: RANDOMIZED
- Interventional Model: PARALLEL
- Masking: SINGLE
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
ACTIVE_COMPARATOR: Norepinephrine
Norepinephrine continuous infusion as the first line vasopressor
|
Norepinephrine administered during anesthesia
|
ACTIVE_COMPARATOR: Phenylephrine
Phenylephrine continuous infusion as the first line vasopressor
|
Phenylephrine administered during anesthesia
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Percent of total cases with assigned vasopressor given
Time Frame: Anesthesia time, up to 24 hours
|
First line vasopressor administration will be measured as a percent of total eligible cases with assigned vasopressor given during anesthesia time, up to 24 hours
|
Anesthesia time, up to 24 hours
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Death
Time Frame: 30 days
|
Number of participants dying within 30 days after surgery
|
30 days
|
Acute kidney injury (AKI)
Time Frame: 7 days
|
AKI using the Kidney Disease: Improving Global Outcomes (KDIGO) definition based on serum creatinine
|
7 days
|
Severe acute kidney injury
Time Frame: 7 days
|
Stage 2 or 3 AKI using the KDIGO definition based on serum creatinine or need for Renal Replacement Therapy (RRT)
|
7 days
|
Hospital length of stay
Time Frame: In-hospital, up to 30 days
|
Days between date of surgery and hospital discharge
|
In-hospital, up to 30 days
|
Myocardial Injury after non-cardiac surgery (MINS)
Time Frame: 7 days
|
Number of patients with post-operative myocardial injury defined as a troponin elevation
|
7 days
|
Adverse Cardio-renal events
Time Frame: 7 days
|
Number of patients meeting a combined endpoint of AKI and/or MINS
|
7 days
|
Rehospitalization within 30 days
Time Frame: 30 days
|
Patients discharge and readmitted for more than 24 hours within 30 days after surgery
|
30 days
|
Collaborators and Investigators
Investigators
- Principal Investigator: Matthieu LEGRAND, MD, PhD, University of California, San Francisco
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Cardiovascular Diseases
- Vascular Diseases
- Hypotension
- Physiological Effects of Drugs
- Adrenergic Agents
- Neurotransmitter Agents
- Molecular Mechanisms of Pharmacological Action
- Autonomic Agents
- Peripheral Nervous System Agents
- Protective Agents
- Adrenergic alpha-Agonists
- Adrenergic Agonists
- Cardiotonic Agents
- Respiratory System Agents
- Sympathomimetics
- Vasoconstrictor Agents
- Mydriatics
- Nasal Decongestants
- Adrenergic alpha-1 Receptor Agonists
- Norepinephrine
- Phenylephrine
- Oxymetazoline
Other Study ID Numbers
- A135759
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
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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