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Showing 1–24 of 47 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Supine Position Clear all
Active, not recruiting Phase 1 Interventional

Reduction in Splanchnic Capacitance Contributes to Sympathetically Dependent Hypertension in Autonomic

NCT02726711
View directory record Official record
Conditions
Multiple System Atrophy, Orthostatic Hypotension, Supine Hypertension
Interventions
Trimethaphan, Placebo
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
40 Years to 80 Years
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Jul 23, 2026, 1:06 PM EDT
Withdrawn No phase listed Observational

Pulmonary Function During Prone and Supine Positioning in NICU Infants Requiring Assisted Ventilation

NCT00749762
View directory record Official record
Conditions
Pulmonary Function
Interventions
Not listed
Lead sponsor
University of Utah
Other
Eligibility
24 Hours to 6 Months
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2010
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated May 4, 2015 · Synced Jul 23, 2026, 1:06 PM EDT
Recruiting Not applicable Interventional

Overnight Trials With Heat Stress in Autonomic Failure Patients With Supine Hypertension

NCT03042988
View directory record Official record
Conditions
Hypertension, Pure Autonomic Failure, Multiple System Atrophy, Autonomic Failure
Interventions
Heating pad, Sham control
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional Results available

Nebivolol in the Supine Hypertension of Autonomic Failure

NCT01044693
View directory record Official record
Conditions
Hypertension, Pure Autonomic Failure, Multiple System Atrophy
Interventions
Placebo, Nebivolol 5 mg, metoprolol tartrate 50 mg, Sildenafil25 mg
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 30, 2015 · Synced Jul 23, 2026, 1:06 PM EDT
Not listed Not applicable Interventional

Supine vs. Upright Weight Bearing MRI in the Evaluation of Patients With Lumbar Spondylolisthesis

NCT02958241
View directory record Official record
Conditions
Spondylolisthesis
Interventions
MRI
Other
Lead sponsor
Texas Back Institute
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
1
States / cities
Plano, Texas
Source: ClinicalTrials.gov public record
Updated Nov 7, 2016 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Improving the Self-Efficacy of African American Parents in Infant Supine Sleep

NCT01707173
View directory record Official record
Conditions
African American Infant Sleep Beliefs and Practices
Interventions
Tailored education, Standard Education
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
18 Years and older
Enrollment
735 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2016
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 2, 2016 · Synced Jul 23, 2026, 1:06 PM EDT
Not listed No phase listed Observational

Evaluating and Establishing the Relationship in the Five Critical X-ray Time Points in Spinal Deformity Realignment

NCT05154825
View directory record Official record
Conditions
Spine, Spine Deformity
Interventions
Imaging-Observational
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Dec 19, 2024 · Synced Jul 23, 2026, 1:06 PM EDT
Completed No phase listed Observational

Arm and Ankle Blood Pressure Cuffs During C-Section

NCT04934995
View directory record Official record
Conditions
Supine Hypotensive Syndrome, Cesarean Section Complications, Anesthesia Complication
Interventions
Blood Pressure Cuff
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 20, 2024 · Synced Jul 23, 2026, 1:06 PM EDT
Not listed Not applicable Interventional

21DIF039: Prone to Supine Breast MRI II, P2S2 Breast MRI Trial

NCT05131607
View directory record Official record
Conditions
Breast Cancer Female
Interventions
Supine MRI
Procedure
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Jan 29, 2024 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of a Surgical Microscope Mounted Autorefractor When Used on Patients Lying in a Supine Position

NCT01827748
View directory record Official record
Conditions
Refractive Error
Interventions
Intraoperative Autorefractor IAR-1, Hartmann-Shack Auto Refractor
Device
Lead sponsor
Adventus Technology
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 11, 2013 · Synced Jul 23, 2026, 1:06 PM EDT
Completed No phase listed Observational

Assessing Cerebral Blood Flow Autoregulation During Surgery in the Head-up Position

NCT01225185
View directory record Official record
Conditions
Shouldersurgery
Interventions
Not listed
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2015
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 21, 2017 · Synced Jul 23, 2026, 1:06 PM EDT
Recruiting Not applicable Interventional

Effect of Raised Head of the Bed on Lying Blood Pressure in Autonomic Failure

NCT04502225
View directory record Official record
Conditions
Supine Hypertension, Autonomic Failure
Interventions
Tilt, Elevated trunk, Tilt - In home, Elevated Trunk - In home
Other
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
18 Years to 85 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Jul 23, 2026, 1:06 PM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Straight Leg Raise Continuation

NCT05568784
View directory record Official record
Conditions
Quadriceps Muscle Atrophy, Leg Injury
Interventions
Straight Leg Raise exercise
Other
Lead sponsor
Andrews Research & Education Foundation
Other
Eligibility
18 Years to 55 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Gulf Breeze, Florida
Source: ClinicalTrials.gov public record
Updated Feb 20, 2024 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional

Prone Whole-Breast RadiationTherapy Versus Supine Whole-Breast Radiation Therapy Imaging

NCT03037723
View directory record Official record
Conditions
Breast Cancer, Respiratory Gating, Prone
Interventions
CT simulation
Other
Lead sponsor
State University of New York - Upstate Medical University
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2020
U.S. locations
1
States / cities
Syracuse, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2023 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Phase 4 Interventional Results available

Effect of Myocilin Genetic Variants on Intraocular Pressure and Pressure Variation in Sitting and Supine Positions

NCT00906087
View directory record Official record
Conditions
Glaucoma
Interventions
Cosopt (combination eyedrop of dorzolamide and timolol)
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 99 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 1, 2017 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Robotic Surgery in the Seated Position for Benign and Malignant Lesions of the Head and Neck

NCT02792322
View directory record Official record
Conditions
Oropharyngeal Neoplasms, Head and Neck Cancer
Interventions
Transoral Robotic Surgery (TORS) with the daVinci Robotic Surgical System device
Device
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 90 Years
Enrollment
32 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 3, 2025 · Synced Jul 23, 2026, 1:06 PM EDT
Terminated Not applicable Interventional Results available

Prone Versus Supine Positioning and the Impact on Bronchopulmonary Dysplasia in Very Low Birth Weight Infants.

NCT04890158
View directory record Official record
Conditions
Prone Positioning, Bronchopulmonary Dysplasia
Interventions
Prone positioning for a total of 6 hours daily
Other
Lead sponsor
Montefiore Medical Center
Other
Eligibility
7 Days to 14 Weeks
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 4, 2024 · Synced Jul 23, 2026, 1:06 PM EDT
Enrolling by invitation Not applicable Interventional

Prospective Evaluation of Upright Versus Supine CT Myelography of the Lumbar Spine

NCT07456137
View directory record Official record
Conditions
Lumbar Central Canal Stenoses, Neural Foraminal Stenoses
Interventions
Upright CT
Radiation
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional Results available

Supine MRI in Breast Cancer Patients Undergoing Upfront Surgery or Receiving Neoadjuvant Therapy

NCT02956473
View directory record Official record
Conditions
Breast Cancer
Interventions
Supine MRI, Neoadjuvant Therapy (NAT), Ultrasound, Mammography, Standard of Care, Standard MRI
Device · Other · Procedure
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 11, 2024 · Synced Jul 23, 2026, 1:06 PM EDT
Recruiting Not applicable Interventional

MedCline Investigational Study for the Treatment of Mild OSA With Positional Therapy

NCT07492420
View directory record Official record
Conditions
Mild Obstructive Sleep Apnea
Interventions
MedCline Sleep System
Device
Lead sponsor
Amenity Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional Results available

The Prone to Supine Breast MRI Trial

NCT03573804
View directory record Official record
Conditions
Breast Cancer
Interventions
Prone to Supine MRI
Other
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Aug 29, 2021 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional

Biobehavioral Efficacy of the Semi-Elevated Side-Lying Position

NCT04942106
View directory record Official record
Conditions
Feeding, Bottle, Infant, Premature, Diseases, Behavior, Infant
Interventions
Arm 1 - Side-lying position followed by Supine position, Arm 2 - Supine position followed by Side-lying position
Other
Lead sponsor
Boston College
Other
Eligibility
Up to 2 Months
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 11, 2024 · Synced Jul 23, 2026, 1:06 PM EDT
Completed Not applicable Interventional Results available

A Study to Evaluate the Use of Supine MRI Images in Breast Conserving Surgery

NCT01929395
View directory record Official record
Conditions
Breast Cancer
Interventions
Supine MRI
Device
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older
Enrollment
159 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2018
U.S. locations
1
States / cities
Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Apr 29, 2019 · Synced Jul 23, 2026, 1:06 PM EDT
Completed No phase listed Observational

Comparison of Standing Versus Supine 3D Cone Beam Computed Tomography in Patient With Obstructive Sleep Apnea

NCT04874727
View directory record Official record
Conditions
OSA, Sleep Apnea
Interventions
Mandible slacked and captured with Correct Plus™ Impression Material Superfast
Procedure
Lead sponsor
Manhattan Beach Orthodontics
Other
Eligibility
Not listed
Enrollment
6 participants
Timeline
2019 – 2020
U.S. locations
1
States / cities
Manhattan Beach, California
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Jul 23, 2026, 1:06 PM EDT