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ClinicalTrials.gov public records Last synced Oct 20, 2026, 6:13 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 54 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Lying Clear all
Withdrawn Not applicable Interventional

Positioning of Surgical Patients With Sleep Apnea

NCT02123238
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
bed positioning
Other
Lead sponsor
Englewood Hospital and Medical Center
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Englewood, New Jersey
Source: ClinicalTrials.gov public record
Updated Sep 15, 2015 · Synced Oct 20, 2026, 6:13 AM 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 13, 2023 · Synced Oct 20, 2026, 6:13 AM 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 6, 2021 · Synced Oct 20, 2026, 6:13 AM 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 5, 2024 · Synced Oct 20, 2026, 6:13 AM EDT
Recruiting Not applicable Interventional

HoYAG vs TFL in miniPCNL With ClearPetra

NCT07087977
View directory record Official record
Conditions
Nephrolithiasis, Kidney Stone
Interventions
HoYAG laser, TFL laser platform
Device
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 6, 2026 · Synced Oct 20, 2026, 6:13 AM EDT
Completed Phase 1 Interventional

Treatment of Supine Hypertension in Autonomic Failure

NCT00223717
View directory record Official record
Conditions
Hypertension
Interventions
Clonidine, Nitroglycerin transdermal, Dipyridamole/ Aspirin (Aggrenox), Desmopressin (DDAVP), Sildenafil, Nifedipine, Hydralazine, Hydrochlorothiazide, Placebo, Bosentan, Diltiazem, Eplerenone, guanfacine, L-arginine, captopril, carbidopa, losartan, metoprolol tartrate, nebivolol hydrochloride, prazosin hydrochloride, tamsulosin hydrochloride, Head-up tilt., aliskiren, Local heat stress
Drug · Dietary Supplement · Other
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 80 Years
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 20, 2026, 6:13 AM 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 21, 2024 · Synced Oct 20, 2026, 6:13 AM EDT
Enrolling by invitation No phase listed Observational

PPV vs PVI in the Supine and Prone Position

NCT07415603
View directory record Official record
Conditions
Surgeries Undergoing General Anesthesia
Interventions
Observation
Other
Lead sponsor
Joseph D. Tobias
Other
Eligibility
Not listed
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 20, 2026, 6:13 AM 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 16, 2026 · Synced Oct 20, 2026, 6:13 AM EDT
Completed Not applicable Interventional Results available

Occlusion Balloon vs. 5FR Ureteral Catheter

NCT06798753
View directory record Official record
Conditions
Kidney Stones
Interventions
Occlusion Balloon Catheter, 5FR Ureteral Catheter
Device
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Oct 20, 2026, 6:13 AM EDT
Withdrawn No phase listed Observational Accepts healthy volunteers

Gas Kinetics and Metabolism in Anesthesia During Non Steady State

NCT00225381
View directory record Official record
Conditions
Anesthetized Healthy Patients (ASA 1 or 2) in the Supine Position, Excluding Head, Neck and Head Surgeries, Anesthetized Patient With Severe Systemic Disease (ASA 3 or 4)
Interventions
connection of measuring device to anesthesia circuit, drawing of blood sample through an arterial line, placed according to clinical criteria by primary anesthesia team, changing operating room bed position (head down and up position), adding PEEP during anesthesia, placement of esophageal Doppler for cardiac output measurements, Humidity sensor, A mixing chamber (bymixer), Pneumotachometer cuvette, Mass spectrometer sampling port
Device · Procedure
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Mar 23, 2021 · Synced Oct 20, 2026, 6:13 AM 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 30, 2021 · Synced Oct 20, 2026, 6:13 AM 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 30, 2024 · Synced Oct 20, 2026, 6:13 AM EDT
Terminated Phase 1 Interventional

Contribution of Angiotensin II to Supine Hypertension in Autonomic Failure

NCT01292694
View directory record Official record
Conditions
Hypertension, Pure Autonomic Failure, Multiple System Atrophy
Interventions
Losartan, Captopril, Placebo
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 85 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 24, 2018 · Synced Oct 20, 2026, 6:13 AM EDT
Withdrawn Phase 1 Interventional

The Role of Endothelin in the Supine Hypertension of Autonomic Failure

NCT01119417
View directory record Official record
Conditions
Hypertension, Pure Autonomic Failure, Multiple System Atrophy
Interventions
BQ123, Saline
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2021
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Oct 5, 2021 · Synced Oct 20, 2026, 6:13 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of the Heidelberg Engineering SPECTRALIS With Flex Module for In-vivo Imaging in the Supine Position

NCT04661124
View directory record Official record
Conditions
Retinal Disease, Healthy Eyes
Interventions
SPECTRALIS, SPECTRALIS with Flex Module
Device
Lead sponsor
Heidelberg Engineering GmbH
Industry
Eligibility
22 Years and older
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 15, 2025 · Synced Oct 20, 2026, 6:13 AM 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 6, 2025 · Synced Oct 20, 2026, 6:13 AM 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 2, 2017 · Synced Oct 20, 2026, 6:13 AM EDT
Completed Not applicable Interventional

Efficacy of Aquamantys for Reducing Transfusions With Anterior Supine Intermuscular Approach Total Hip Arthroplasty

NCT01583465
View directory record Official record
Conditions
Osteoarthritis, Hip, Joint Deformities, Acquired, Hip Dislocation, Congenital, Osteonecrosis, Arthritis, Rheumatoid
Interventions
Aquamantys, standard electrocautery (Bovie)
Device
Lead sponsor
Joint Implant Surgeons, Inc.
Other
Eligibility
Not listed
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
New Albany, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 24, 2012 · Synced Oct 20, 2026, 6:13 AM 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 21, 2024 · Synced Oct 20, 2026, 6:13 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Patient Doctor Lies

NCT04803448
View directory record Official record
Conditions
Patient Lying, Privacy Statements, Risk Statements, Benefit Statements, Patient Lie Detection
Interventions
Benefit statement, Risk Statement, Privacy Statement, Benefit + Privacy, Risk + Privacy
Behavioral
Lead sponsor
University of Utah
Other
Eligibility
18 Years to 80 Years
Enrollment
619 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Provo, Utah
Source: ClinicalTrials.gov public record
Updated Mar 17, 2021 · Synced Oct 20, 2026, 6:13 AM EDT
Completed 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
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Oct 20, 2026, 6:13 AM EDT
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 13, 2026 · Synced Oct 20, 2026, 6:13 AM 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 12, 2024 · Synced Oct 20, 2026, 6:13 AM EDT