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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Nasal Airway Obstruction Clear all
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 21, 2026, 9:26 PM EDT
Completed Not applicable Interventional Results available

Effect of Nasal Positive Airway Pressure Versus Standard Care on Oxygenation and Ventilation During Propofol-based Sedation for Colonoscopy in Patients With High Risk of Airway Obstruction

NCT05524220
View directory record Official record
Conditions
Obstructive Sleep Apnea, Obesity
Interventions
Standard care with a facemask., SuperNO2VA™EtCO2 (Nasal Oxygenating Ventilating Apparatus)
Device
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years and older
Enrollment
139 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 21, 2025 · Synced Jul 21, 2026, 9:26 PM EDT
Active, not recruiting No phase listed Observational

A Prospective Study Comparing VivAer to Alternative Surgical Procedures to Treat Nasal Airway Obstruction in Patients With Nasal Valve Dysfunction.

NCT06922955
View directory record Official record
Conditions
Nasal Airway Obstruction
Interventions
Not listed
Lead sponsor
Aerin Medical
Industry
Eligibility
22 Years to 85 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
35
States / cities
Alexander City, Alabama • Birmingham, Alabama • Huntsville, Alabama + 27 more
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Phase 2 Interventional Results available

A Pivotal Subjective Sleep Study of a Nasal Dilator (Breathe Right Tan)

NCT03549117
View directory record Official record
Conditions
Congestion, Nasal
Interventions
Breathe Right Tan (small/medium) nasal strips, Placebo nasal strip
Device · Other
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years and older
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
2
States / cities
Verona, New Jersey • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Jul 21, 2026, 9:26 PM EDT
Completed No phase listed Observational Results available

Home Usability of a Nasal Lavage System in Children

NCT01129765
View directory record Official record
Conditions
Nasal Congestion, Respiratory Tract Infection, Sinusitis, Allergic Rhinitis
Interventions
Use of an automatic nasal irrigator/aspirator
Device
Lead sponsor
Aardvark Medical Company
Industry
Eligibility
Up to 5 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009
U.S. locations
1
States / cities
Vienna, Virginia
Source: ClinicalTrials.gov public record
Updated Aug 2, 2010 · Synced Jul 21, 2026, 9:26 PM 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 21, 2026, 9:26 PM EDT
Completed Phase 2 Interventional

Randomized Clinical Trial of Nasal Turbinate Reduction to Improve Continuous Positive Airway Pressure (CPAP) Outcomes for Sleep Apnea

NCT00503802
View directory record Official record
Conditions
Sleep Apnea Syndromes, Nasal Obstruction, Turbinate Hypertrophy
Interventions
Radiofrequency Turbinate Reduction, Sham RF
Procedure
Lead sponsor
University of Washington
Other
Eligibility
18 Years to 80 Years
Enrollment
242 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
3
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 18, 2013 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Not applicable Interventional

Nasal Mask Ventilation During the Induction of General Anesthesia

NCT01651286
View directory record Official record
Conditions
Mechanical Ventilation Complication, Upper Airway Obstruction
Interventions
nasal mask, full face mask
Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Phase 3 Interventional

Effect of Heated Humidity With Thermosmart™ Compared to an Intranasal Steroid in Improving Compliance and Nasal Symptoms in Patients Using Continuous Positive Airway Pressure

NCT00665977
View directory record Official record
Conditions
Obstructive Sleep Apnea, Nasal Congestion, Sinus Congestion
Interventions
Thermosmart & placebo, Placebo Device & Nasacort, Placebo Arm
Drug · Device
Lead sponsor
Clayton Sleep Insititute
Industry
Eligibility
16 Years to 65 Years
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 6, 2010 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Not applicable Interventional

Safety Study of Continuous Positive Airway Pressure Via a Nasal Mask

NCT01524614
View directory record Official record
Conditions
Upper Airway Obstruction
Interventions
nasal mask
Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Jul 21, 2026, 9:26 PM EDT
Recruiting Phase 2 Interventional

Nasal Obstruction With Oxymetazoline and Corticosteroids

NCT06830109
View directory record Official record
Conditions
Nasal Obstruction
Interventions
Oxymetazoline Nasal Spray, Budesonide nasal spray
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 10, 2025 · Synced Jul 21, 2026, 9:26 PM EDT
Terminated Phase 2 Interventional

Steroid Treatment for Elimination of Rebound Obstruction From Intranasal Decongestants

NCT07168148
View directory record Official record
Conditions
Nasal Obstruction, Chronic Rhinitis
Interventions
Oxymetazoline + Triamcinolone
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Effects of AkPharma's Calcium Glycerophosphate Nasal Spray Wash

NCT01647633
View directory record Official record
Conditions
Allergic Rhinitis
Interventions
Calcium Glycerophosphate Nasal Spray Wash
Other
Lead sponsor
Drexel University
Other
Eligibility
18 Years to 80 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 24, 2015 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Not applicable Interventional Results available

The Safety and Efficacy of a SinuSonic Intervention

NCT03906968
View directory record Official record
Conditions
Nasal Congestion
Interventions
SinuSonic Device
Device
Lead sponsor
Medical University of South Carolina
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Charleston, South Carolina
Source: ClinicalTrials.gov public record
Updated Apr 21, 2021 · Synced Jul 21, 2026, 9:26 PM EDT
Withdrawn Phase 3 Interventional

Safety Study of Positive Airway Pressure Via a Nasal Mask in Obese Patients

NCT01627925
View directory record Official record
Conditions
Upper Airway Obstruction
Interventions
nasal mask and continuous positive airway pressure
Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Jul 21, 2026, 9:26 PM EDT
Recruiting Not applicable Interventional

Self-Supporting Nasopharyngeal Airway (ssNPA) Treating Upper Airway Obstruction in Hypotonia

NCT05527652
View directory record Official record
Conditions
Obstructive Sleep Apnea, Hypertonia, Muscle, Nasal Airway Obstruction, Tolerance, Trisomy 21, Down Syndrome
Interventions
Self-Supporting Nasopharyngeal Airway (ssNPA)
Device
Lead sponsor
University of Michigan
Other
Eligibility
3 Years to 21 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Not applicable Interventional Results available

LATERA-OFFICE Study

NCT02964312
View directory record Official record
Conditions
Nasal Obstruction
Interventions
Nasal Implant
Device
Lead sponsor
Spirox, Inc.
Industry
Eligibility
18 Years and older
Enrollment
166 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
9
States / cities
Beverly Hills, California • Boca Raton, Florida • Boynton Beach, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2020 · Synced Jul 21, 2026, 9:26 PM EDT
Withdrawn Not applicable Interventional

Randomized Trial Comparing Partial Resection of Inferior Turbinate(PRIT) and Radiofrequency Ablation(RFA) for Inferior Turbinate Reduction

NCT00358267
View directory record Official record
Conditions
Nasal Obstruction, Septal Deformity, Turbinate Hypertrophy
Interventions
Partial Resection of Inferior Turbinates (PRIT), Radiofrequency Ablation (RFA)
Procedure
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 25, 2016 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Phase 4 Interventional Results available

Effect of Tranexamic Acid on Postoperative Bleeding Following Sinus and Nasal Surgery

NCT04754230
View directory record Official record
Conditions
Chronic Sinusitis, Nasal Obstruction, Turbinate; Hypertrophy Mucous Membrane, Deviated Nasal Septum - Congenital, Deviated Nasal Septum Acquired
Interventions
Tranexamic Acid 1,000 Mg/10 mL (100 Mg/mL) INTRAVEN VIAL (ML)
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 4, 2023 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Phase 4 Interventional

To Determine if Diphenhydramine Works for Nasal Congestion at Two Different Doses

NCT00648973
View directory record Official record
Conditions
Nasal Congestion
Interventions
Diphenhydramine 50 mg, Diphenhydramine 25 mg, Pseudoephedrine 120 mg
Drug
Lead sponsor
Johnson & Johnson Consumer and Personal Products Worldwide
Industry
Eligibility
12 Years to 65 Years
Enrollment
1,021 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2007
U.S. locations
12
States / cities
Austin, Texas • Dallas, Texas • Kerrville, Texas + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2011 · Synced Jul 21, 2026, 9:26 PM EDT
Terminated Phase 4 Interventional

Surgical Reduction of the Inferior Turbinates for Nasal Obstruction

NCT00737906
View directory record Official record
Conditions
Chronic Rhinitis, Inflammation of the Nasal Mucosa, Inflammation of Nasal Tissue
Interventions
Surgical turbinate reduction procedure
Procedure
Lead sponsor
ArthroCare Corporation
Other
Eligibility
6 Years to 17 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2012
U.S. locations
5
States / cities
San Diego, California • Aurora, Colorado • Boynton Beach, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2015 · Synced Jul 21, 2026, 9:26 PM 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 21, 2026, 9:26 PM EDT
Completed Phase 2 Interventional Results available

Market Potential of Carbon Dioxide Nasal Spray

NCT02113449
View directory record Official record
Conditions
Nasal Congestion
Interventions
Carbon Dioxide
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years
Enrollment
147 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
4
States / cities
Chandler, Arizona • Pinellas Park, Florida • Paramus, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2015 · Synced Jul 21, 2026, 9:26 PM EDT
Completed Phase 3 Interventional

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

NCT02008344
View directory record Official record
Conditions
Influenza
Interventions
favipiravir, placebo
Drug
Lead sponsor
MDVI, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
1,161 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
147
States / cities
Birmingham, Alabama • Huntsville, Alabama • Camp Verde, Arizona + 123 more
Source: ClinicalTrials.gov public record
Updated Nov 10, 2015 · Synced Jul 21, 2026, 9:26 PM EDT