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Showing 25–45 of 21 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: phenylephrine infusion Clear all
Completed Early Phase 1 Interventional

Vasopressor Outcomes in Spine Surgery

NCT06053398
View directory record Official record
Conditions
Hypotension
Interventions
Phenylephrine, Norepinephrine
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years and older
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Dec 29, 2025 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Early Phase 1 Interventional

Effect of Changing Physiological Conditions on Myogenic Oscillations: Pilot Study

NCT03719001
View directory record Official record
Conditions
Vascular Diseases
Interventions
Phenylephrine, Dexmedetomidine, Clevidipine, tetanic stimulus, Increased venous pressure, Calcium Chloride
Drug · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jun 29, 2022 · Synced Sep 23, 2026, 2:16 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Alpha-Adrenoceptor Vascular Function In Chronic Kidney Disease Focus On The Role Of Endothelial Nitric Oxide

NCT00356265
View directory record Official record
Conditions
Chronic Kidney Disease, Hypertension
Interventions
Procedure: Regional phenylephrine arterial infusion
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Role of Nitric Oxide in the Impact of Aging on Myocardial Remodeling

NCT00603720
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
L-NAME, L-Arginine, Phenylephrine
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 75 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 11, 2018 · Synced Sep 23, 2026, 2:16 AM EDT
Enrolling by invitation Phase 4 Interventional

The GUARDIAN Trial - Vasopressor Sub-Study

NCT04934748
View directory record Official record
Conditions
Blood Pressure
Interventions
Routine Blood Pressure Management, Tight Blood Pressure Management, Phenylephrine, Norepinephrine
Procedure · Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
45 Years and older
Enrollment
6,254 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
4
States / cities
Omaha, Nebraska • Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Phase 4 Interventional Results available

Preventing Hypotension in Parturients With an Elevated Body Mass Index (BMI)

NCT01481740
View directory record Official record
Conditions
Hypotension
Interventions
Phenylephrine bolus, phenylephrine infusion
Drug
Lead sponsor
IWK Health Centre
Other
Eligibility
18 Years and older · Female only
Enrollment
178 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 22, 2018 · Synced Sep 23, 2026, 2:16 AM EDT
Suspended Early Phase 1 Interventional

Blood PREssure Augmentation in Large-vessel Occlusion Stroke Study

NCT04218773
View directory record Official record
Conditions
Ischemic Stroke, Blood Pressure
Interventions
Phenylephrine, Norepinephrine
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 3, 2025 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety Study Designed to Study the Effects of Two Different Doses of CXA-101/Tazobactam, a Low Dose and a High Dose, on the QT/QTc Intervals in Healthy Subjects

NCT02508753
View directory record Official record
Conditions
Healthy
Interventions
CXA-101/tazobactam, Moxifloxacin, placebo
Drug
Lead sponsor
Cubist Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA)
Industry
Eligibility
18 Years to 45 Years
Enrollment
52 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Jan 25, 2017 · Synced Sep 23, 2026, 2:16 AM EDT
Recruiting Not applicable Interventional

The GUARDIAN Trial

NCT04884802
View directory record Official record
Conditions
Blood Pressure
Interventions
Tight blood pressure management, Routine blood pressure management
Procedure
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
45 Years and older
Enrollment
6,254 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
6
States / cities
Omaha, Nebraska • Wake Forest, North Carolina • Cleveland, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2025 · Synced Sep 23, 2026, 2:16 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Deciphering Preserved Autonomic Function After Multiple Sclerosis

NCT07012135
View directory record Official record
Conditions
Multiple Sclerosis, Control Subjects, Autonomic Dysreflexia
Interventions
Tests of sympathetic inhibition, Tests of sympathetic activation, Testing of autonomic dysreflexia
Diagnostic Test
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 50 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 27, 2026 · Synced Sep 23, 2026, 2:16 AM EDT
Terminated No phase listed Observational

Cardiac Output in Heart Failure Patients With Mechanical Pumps

NCT05195931
View directory record Official record
Conditions
Heart Failure, Systolic, Mechanical Circulatory Support, Cardiovascular Hemodynamics
Interventions
preload challenge, afterload challenge, contractility assessment
Diagnostic Test
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 80 Years
Enrollment
7 participants
Timeline
2021 – 2022
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated May 18, 2023 · Synced Sep 23, 2026, 2:16 AM EDT
Recruiting Phase 4 Interventional

Vasoactive Drugs in Intensive Care Unit

NCT02118467
View directory record Official record
Conditions
Shock
Interventions
Norepinephrine, Epinephrine, Phenylephrine, Vasopressin
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Enrollment
836 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Neonatal Acid-Base Status After C Section With Maternal Tilt vs. Supine

NCT02243423
View directory record Official record
Conditions
Aortocaval Compression, Fetal Acidosis
Interventions
SUPINE, TILT
Procedure
Lead sponsor
Columbia University
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 25, 2016 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Phenylephrine and Pulse Pressure Variability

NCT05011357
View directory record Official record
Conditions
Intraoperative Hypotension
Interventions
Phenylephrine, Saline Control
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
18 Years to 45 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2024 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Exercise in Health and Chronic Obstructive Pulmonary Disease

NCT02300064
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Knee-extensor exercise test, Exercise test with restricting/releasing blood flow, Exercise test with variable oxygen concentration and MRI, Exercise test with oral antioxidant or placebo cocktail
Other
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
185 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2016
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 31, 2016 · Synced Sep 23, 2026, 2:16 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Topical Phenylephrine Solution in Preventing Oral Mucosa in Bone Marrow Transplant Patients Receiving Cyclophosphamide and Total Body Radiation Therapy

NCT02434146
View directory record Official record
Conditions
Neoplasm, Oral Mucosa, Transplant-Related Disorder
Interventions
Topical Phenylephrine Solution
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 8, 2019 · Synced Sep 23, 2026, 2:16 AM EDT
Not listed Phase 4 Interventional Accepts healthy volunteers

Study to Determine the Pharmacokinetics and Pharmacodynamic Effects of Phenylephrine on BP Via IV

NCT02323399
View directory record Official record
Conditions
Hypotension
Interventions
Phenylephrine
Drug
Lead sponsor
West-Ward Pharmaceutical
Industry
Eligibility
12 Years to 16 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2024
U.S. locations
10
States / cities
Wilmington, Delaware • Washington D.C., District of Columbia • Miami, Florida + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2024 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Single-centre, Randomised, Double-blind, Placebo-controlled, Four Way Crossover Phase I Study to Investigate the Effect on QT/QTc Interval of Ceftazidime NXL104 or Ceftaroline Fosamil NXL104, Compared With Placebo, Using Moxifloxacin (Avelox®) as a Positive Control, in Healthy Male Volunteers

NCT01290900
View directory record Official record
Conditions
Healthy Male Volunteers
Interventions
NXL104, Ceftaroline, Placebo Infusion, Ceftazidime, Moxifloxacin
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years to 45 Years · Male only
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Aug 31, 2017 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Study On The Role Of Nitric Oxide In Alpha 1-Adrenergic Vasoreactivity

NCT00240058
View directory record Official record
Conditions
Blood Pressure
Interventions
Regional phenylephrine arterial infusion, Nitric Oxide Clamp
Drug
Lead sponsor
Crystal A. Gadegbeku
Other
Eligibility
18 Years to 55 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 4, 2017 · Synced Sep 23, 2026, 2:16 AM EDT
Completed Not applicable Interventional Results available

Prevention of Intraoperative Nausea and Vomiting During Cesarean Section

NCT01216410
View directory record Official record
Conditions
Cesarean Delivery
Interventions
Metoclopramide, Phenylephrine infusion, Combination Group
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
306 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 5, 2014 · Synced Sep 23, 2026, 2:16 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Characterization of Sympathetic Nerve Activity in Stress Cardiomyopathy

NCT01048125
View directory record Official record
Conditions
Cardiomyopathy
Interventions
Sympathetic Nerve Activity, Mental Stress Test (Color Word Test), The Modified Oxford Technique for Baroreflex Sensitivity, Cold Pressor Test, Echocardiographic evaluation
Device · Behavioral · Drug + 1 more
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
21 Years to 90 Years
Enrollment
2 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 22, 2016 · Synced Sep 23, 2026, 2:16 AM EDT