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Showing 1–24 of 153 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Airway Obstruction Clear all
Completed Not applicable Interventional

Breathing Training for Asthma

NCT00975273
View directory record Official record
Conditions
ASTHMA
Interventions
Capnometry Assisted Respiration Training, Breathing Awareness
Behavioral
Lead sponsor
Southern Methodist University
Other
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
2
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 3, 2018 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Phase 3 Interventional Results available

Efficacy, Safety and Tolerability of Aclidinium Bromide/Formoterol Fumarate Compared With Aclidinium Bromide and Formoterol Fumarate in Patients With Moderate to Severe Chronic Obstructive Pulmonary Disease (COPD)

NCT01437397
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Aclidinium Bromide/Formoterol Fumarate, Aclidinium Bromide, Formoterol Fumarate, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
40 Years and older
Enrollment
1,692 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
193
States / cities
Anniston, Alabama • Athens, Alabama • Birmingham, Alabama + 155 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2017 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Latera RCT - Latera vs. Sham Control for Lateral Nasal Valve Collapse

NCT03400787
View directory record Official record
Conditions
Nasal Valve Collapse, Nasal Breathing
Interventions
Latera Implant, Sham Procedure
Device
Lead sponsor
Spirox, Inc.
Industry
Eligibility
18 Years and older
Enrollment
137 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
11
States / cities
Roseville, California • Torrance, California • Atlanta, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2021 · Synced Jul 22, 2026, 11:56 AM EDT
Not yet recruiting Not applicable Interventional

Active vs. Passive VR During Office-based ENT Procedures

NCT07599826
View directory record Official record
Conditions
Pain, Anxiety, Chronic Rhinosinusitis (CRS), Nasal Obstruction, Nasal Polyp, Eustachian Tube Dysfunction, Dysphonia, Subglottic Stenosis (SGS)
Interventions
Virtual reality headset or goggles
Device
Lead sponsor
Cedars-Sinai Medical Center
Other
Eligibility
18 Years and older
Enrollment
132 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mechanisms of Upper Airway Obstruction

NCT04322097
View directory record Official record
Conditions
Obstructive Sleep Apnea
Interventions
Hypoglossal Nerve Stimulation
Device
Lead sponsor
University of Pennsylvania
Other
Eligibility
22 Years and older
Enrollment
133 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 20, 2026 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Mechanisms of Endothelial Cell Dysfunction in Sleep Apnea

NCT00859950
View directory record Official record
Conditions
Obstructive Sleep Apnea, Hypoxemia
Interventions
Continuous Positive Airway Pressure (CPAP)
Device
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
21 Years and older
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 3, 2019 · Synced Jul 22, 2026, 11:56 AM EDT
Not listed No phase listed Observational Accepts healthy volunteers

Safety and Efficacy of the LMA Supreme When Inserted With Patients in the Prone Position

NCT03633942
View directory record Official record
Conditions
Airway Obstruction
Interventions
LMA Supreme
Device
Lead sponsor
Laser Spine Institute
Industry
Eligibility
18 Years to 70 Years
Enrollment
1,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 23, 2018 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

A New Treatment for Mechanical Nasal Obstruction

NCT03456115
View directory record Official record
Conditions
Nasal Obstruction
Interventions
Mechanical nasal dilator
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 17, 2023 · Synced Jul 22, 2026, 11:56 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Suture-based, Minimally Invasive Technique Used to Correct NSD

NCT04891263
View directory record Official record
Conditions
Nasal Septum; Deviation, Congenital, Nasal Obstruction
Interventions
Suture-Septoplasty, Surgical suture
Procedure · Device
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
2
States / cities
Palo Alto, California • Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 2, 2023 · Synced Jul 22, 2026, 11:56 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Study of Polyester Implants for the Treatment of External Nasal Valve Collapse (NVC)

NCT00729781
View directory record Official record
Conditions
Nasal Alar Collapse, Bilateral
Interventions
Polyester Implants
Device
Lead sponsor
Medtronic Xomed, Inc.
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
5
States / cities
Sacramento, California • Atlanta, Georgia • Downers Grove, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Jan 5, 2012 · Synced Jul 22, 2026, 11:56 AM EDT
Completed No phase listed Observational

LifeVac Survey Study

NCT06659796
View directory record Official record
Conditions
Airway Obstruction, Choking
Interventions
LifeVac
Device
Lead sponsor
LifeVac, LLC
Industry
Eligibility
1 Year and older
Enrollment
2,930 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Dedham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Jul 22, 2026, 11:56 AM EDT
Completed No phase listed Interventional Accepts healthy volunteers Results available

SureCRIC Standardized Patient Study

NCT03488849
View directory record Official record
Conditions
Airway Obstruction
Interventions
SureCRIC, Freehand
Device · Other
Lead sponsor
InnoVital Systems, Inc.
Industry
Eligibility
Not listed
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Nov 22, 2021 · Synced Jul 22, 2026, 11:56 AM EDT
Completed No phase listed Observational

Vibration Response Imaging in Chronic Obstructive Pulmonary Disease and Asthma

NCT00542282
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Asthma
Interventions
Not listed
Lead sponsor
Deep Breeze
Industry
Eligibility
18 Years to 85 Years
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 15, 2009 · Synced Jul 22, 2026, 11:56 AM EDT
Terminated Phase 2 Interventional Results available

Comparison of Aclidinium Bromide and Formoterol Fumarate in Patients With Moderate to Severe Chronic Obstructive Pulmonary Disease (COPD)

NCT00706914
View directory record Official record
Conditions
Pulmonary Disease, Chronic Obstructive
Interventions
Once-daily aclidinium/formoterol, Twice-daily formoterol fumarate, Placebo to formoterol fumarate, Once-daily formoterol fumarate
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
40 Years to 80 Years
Enrollment
156 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
40
States / cities
Tucson, Arizona • Fullerton, California • Lakewood, California + 36 more
Source: ClinicalTrials.gov public record
Updated May 14, 2017 · Synced Jul 22, 2026, 11:56 AM EDT
Recruiting No phase listed Observational

Detection of Unsuspected Small Airways Obstruction in Cystic Fibrosis

NCT03839992
View directory record Official record
Conditions
Cystic Fibrosis in Children
Interventions
spirometry
Diagnostic Test
Lead sponsor
Gelb, Arthur F., M.D.
Individual
Eligibility
5 Years to 40 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
2
States / cities
Lakewood, California • Long Beach, California
Source: ClinicalTrials.gov public record
Updated Oct 25, 2023 · Synced Jul 22, 2026, 11:56 AM EDT
Completed No phase listed Observational

Evaluating Genetic Factors That May Contribute to Elastin Function and the Development of Chronic Obstructive Pulmonary Disease

NCT00725309
View directory record Official record
Conditions
Emphysema, Pulmonary Disease, Chronic Obstructive
Interventions
Not listed
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 17, 2018 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Phase 4 Interventional Results available

Impact of Anesthetic Choice (Sevoflurane Versus Desflurane) on Airway Reflex Recovery in the Context of Antagonized Neuromuscular Block

NCT01199237
View directory record Official record
Conditions
Airway Reflexes, Protective, Recovery After Neuromuscular Block, Anesthetic Recovery
Interventions
Sevoflurane, Desflurane, Rocuronium, Neostigmine, Glycopyrrolate
Drug
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 65 Years
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
2
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 15, 2014 · Synced Jul 22, 2026, 11:56 AM EDT
Not listed Phase 2 Interventional

Removal of Endotracheal Tube Secretions Comprehensively Until Extubation

NCT00663637
View directory record Official record
Conditions
Mechanical Ventilation, Pneumonia
Interventions
CAM (Complete Airway Management) Catheters
Device
Lead sponsor
O. M. Neotech, Inc.
Industry
Eligibility
Not listed
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2008
U.S. locations
1
States / cities
Cape Girardeau, Missouri
Source: ClinicalTrials.gov public record
Updated May 28, 2008 · Synced Jul 22, 2026, 11:56 AM EDT
Completed No phase listed Observational Results available

Progression of Airway Obstruction in Childhood Asthma

NCT00873873
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
National Jewish Health
Other
Eligibility
16 Years to 40 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 21, 2020 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Phase 2 Interventional Results available

Pharmacokinetic, Safety and Tolerability Study of Aclidinium/Formoterol Fixed Dose Combination and Formoterol in Patients With Moderate to Severe Chronic Obstructive Pulmonary Disease (COPD)

NCT01551888
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
Aclidinium/formoterol 400/12μg, Formoterol
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
40 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
Spartanburg, South Carolina
Source: ClinicalTrials.gov public record
Updated Feb 13, 2017 · Synced Jul 22, 2026, 11:56 AM EDT
Completed No phase listed Observational

A New Flexible Extended-Length Pharyngeal Airway for Deep Sedation

NCT04419883
View directory record Official record
Conditions
Upper Airway Obstruction
Interventions
McMurray Enhanced Airway
Device
Lead sponsor
McMurray Medical Group, LLC
Industry
Eligibility
18 Years and older
Enrollment
86 participants
Timeline
2019 – 2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 8, 2020 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Phase 3 Interventional

Phase 3 Efficacy and Safety Study of Favipiravir for Treatment of Uncomplicated Influenza in Adults - T705US316

NCT02026349
View directory record Official record
Conditions
Influenza
Interventions
favipiravir, Placebo
Drug
Lead sponsor
MDVI, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
860 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
60
States / cities
Birmingham, Alabama • Hunstville, Alabama • Hot Springs, Arkansas + 48 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Not applicable Interventional Results available

COMPASSION - COngenital Multicenter Trial of Pulmonic VAlve Regurgitation Studying the SAPIEN InterventIONal THV

NCT00676689
View directory record Official record
Conditions
Pulmonary Valve Insufficiency, Pulmonary Regurgitation, Dysfunctional RVOT Conduit, Pulmonary Obstruction, Pulmonary Stenosis
Interventions
SAPIEN Transcatheter Valve Implantation
Device
Lead sponsor
Edwards Lifesciences
Industry
Eligibility
Not listed
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2019
U.S. locations
7
States / cities
Los Angeles, California • Miami, Florida • Atlanta, Georgia + 4 more
Source: ClinicalTrials.gov public record
Updated Feb 25, 2020 · Synced Jul 22, 2026, 11:56 AM EDT
Completed Not applicable Interventional Results available

InFlux System for Nasal Breathing Improvement

NCT01960816
View directory record Official record
Conditions
Nasal Airway Obstruction
Interventions
Procedure: thermal coagulation of tissue in the nasal airway
Device
Lead sponsor
Aerin Medical
Industry
Eligibility
18 Years to 75 Years
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
2
States / cities
Boston, Massachusetts • Ocean Springs, Mississippi
Source: ClinicalTrials.gov public record
Updated Sep 25, 2016 · Synced Jul 22, 2026, 11:56 AM EDT