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ClinicalTrials.gov public records Last synced Sep 15, 2026, 5:06 PM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Lung Function Decreased Clear all
Completed No phase listed Observational

Dietary Intake in Adults From the GA2LEN Folow-up Survey

NCT03251157
View directory record Official record
Conditions
Asthma, Lung Function Decreased, Food Allergy, Allergic Sensitisation, Allergic Rhinitis, COPD, Atopy
Interventions
Dietary intake of various nutrients, foods and biocompounds
Other
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
15 Years to 75 Years
Enrollment
3,500 participants
Timeline
2007 – 2010
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 15, 2017 · Synced Sep 15, 2026, 5:06 PM EDT
Withdrawn Not applicable Interventional

The Effectiveness of the Jamboxx Respiratory Therapy Device: Study 2

NCT03522480
View directory record Official record
Conditions
Cystic Fibrosis in Children
Interventions
Jamboxx Respiratory Therapy Device, Autogenic Draining Training
Device · Other
Lead sponsor
My Music Machines Inc.
Industry
Eligibility
5 Years to 17 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Albany, New York
Source: ClinicalTrials.gov public record
Updated Sep 1, 2020 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Pupillary Unrest as an Indicator of Central Opioid Effect in Subjects 40-60 Years of Age

NCT05391555
View directory record Official record
Conditions
Opioid Toxicity, Pupillary Miosis, Respiratory Depression
Interventions
Remifentanil Hydrochloride, Pupillometry measurement
Drug · Device
Lead sponsor
University of California, San Francisco
Other
Eligibility
40 Years to 60 Years
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated May 1, 2025 · Synced Sep 15, 2026, 5:06 PM EDT
Recruiting No phase listed Observational

Body Composition Related Evaluation of Airway Tone and Hyper-rEactivity Using Oscillometry

NCT07356310
View directory record Official record
Conditions
Breathing, Lung Function Decreased, Asthma (Diagnosis), Obesity
Interventions
Oscillometer
Device
Lead sponsor
University of Rochester
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 15, 2026, 5:06 PM EDT
Active, not recruiting No phase listed Observational

Personalizing Perioperative Analgesia in Children

NCT01140724
View directory record Official record
Conditions
Postoperative Pain
Interventions
Not listed
Lead sponsor
Senthil Sadhasivam
Other
Eligibility
3 Years to 15 Years
Enrollment
1,200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 1, 2026 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Not applicable Interventional Results available

PRediction of Opioid-induced Respiratory Depression In Patients Monitored by capnoGraphY

NCT02811302
View directory record Official record
Conditions
Respiratory Depression
Interventions
Capnostream Monitor
Device
Lead sponsor
Medtronic - MITG
Industry
Eligibility
18 Years and older
Enrollment
1,495 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
9
States / cities
Aurora, Colorado • Atlanta, Georgia • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Jun 11, 2019 · Synced Sep 15, 2026, 5:06 PM EDT
Completed No phase listed Observational

Vitamin C Supplementation to Pregnant Smokers: Follow-up of 2 Randomized Trials Plus Changes in DNA Methylation

NCT03206710
View directory record Official record
Conditions
Asthma, Wheezing, In Utero Nicotine, Pulmonary Function
Interventions
No current intervention
Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
6 Months to 11 Years
Enrollment
395 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
2
States / cities
Indianapolis, Indiana • Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 20, 2025 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Dexmedetomidine for the Control of Post-Operative Pain in Thoracotomy Patients

NCT00345384
View directory record Official record
Conditions
Post-operative Pain, Respiratory Depression
Interventions
Dexmedetomidine, Placebo (Normal Saline)
Drug · Other
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years to 85 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 7, 2016 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Not applicable Interventional Results available

The Effects of Ketamine on Respiratory Stimulation and Transpulmonary Pressures

NCT01969227
View directory record Official record
Conditions
Mechanical Ventilation, Airway Patency, Respiratory Depression
Interventions
Subanesthetic ketamine
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2022
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Sep 15, 2026, 5:06 PM EDT
Active, not recruiting Phase 4 Interventional

A Study of a Mean Pulmonary Artery Pressure-Targeted Approach With Early and Rapid Treprostinil Therapy to Reverse Right Ventricular Remodeling in Participants With Pulmonary Arterial Hypertension

NCT05203510
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Parenteral Treprostinil, Oral Treprostinil
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
28
States / cities
Phoenix, Arizona • Fresno, California • Los Angeles, California + 23 more
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cardiopulmonary Responses to Exposure to Ozone and Diesel Exhaust

NCT01874834
View directory record Official record
Conditions
Respiratory Depression, Blood Pressure
Interventions
ozone
Other
Lead sponsor
Environmental Protection Agency (EPA)
Federal
Eligibility
18 Years to 55 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 10, 2013 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Predictors of Opioid-Induced Respiratory Depression (OIRD)

NCT02473354
View directory record Official record
Conditions
Respiratory Depression
Interventions
Remifentanil, Oxygen, Carbon dioxide
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years to 50 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 9, 2020 · Synced Sep 15, 2026, 5:06 PM EDT
Not listed No phase listed Observational

Incidence OIRD Medical and Trauma Patients

NCT03948880
View directory record Official record
Conditions
Respiratory Depression, Sedation
Interventions
Not listed
Lead sponsor
Community Health System
Other
Eligibility
18 Years to 89 Years
Enrollment
101 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Fresno, California
Source: ClinicalTrials.gov public record
Updated Jul 30, 2019 · Synced Sep 15, 2026, 5:06 PM EDT
Not listed No phase listed Observational

Advanced Prediction of Respiratory Depression Episode With the Linshom Continuous Predictive Respiratory Sensor

NCT05804175
View directory record Official record
Conditions
Post Surgical Respiratory Failure, Respiratory Complication
Interventions
Linshom Continuous Predictive Respiratory Monitoring
Device
Lead sponsor
Linshom Medical, Inc.
Industry
Eligibility
18 Years and older
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
Ellicott City, Maryland • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 29, 2024 · Synced Sep 15, 2026, 5:06 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Antagonism of Opioid-Induced Respiratory Depression by CX1739 With Preservation of Opioid Analgesia

NCT02735629
View directory record Official record
Conditions
Opiate Induced Respiratory Depression
Interventions
CX1739 - 300 mg, CX1739 - 600 mg, CX1739 - 900 mg, Placebo
Drug
Lead sponsor
RespireRx
Industry
Eligibility
18 Years to 50 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 27, 2016 · Synced Sep 15, 2026, 5:06 PM EDT
Terminated Not applicable Interventional Results available

OSA Screen Negative With Spinal Duramorph

NCT03151226
View directory record Official record
Conditions
Respiratory Depression
Interventions
Capnography monitoring
Device
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 6, 2018 · Synced Sep 15, 2026, 5:06 PM EDT
Completed No phase listed Observational

Pharmacogenetic Morphine Spine Study

NCT01839461
View directory record Official record
Conditions
Pain
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
10 Years to 18 Years
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2019
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 6, 2019 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Single Dose Crossover Study to Compare the Respiratory Drive After Administration of Belbuca, Oxycodone and Placebo.

NCT03996694
View directory record Official record
Conditions
Respiratory Depression
Interventions
Belbuca 300 µg, Belbuca 600 µg, Belbuca 900 µg, Oxycodone 30 mg, Oxycodone 60 mg, Placebo
Drug
Lead sponsor
BioDelivery Sciences International
Industry
Eligibility
18 Years to 55 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Sep 15, 2026, 5:06 PM EDT
Terminated No phase listed Observational

Recovery of Ventilation After General Anesthesia in Morbidly Obese Patients

NCT03925610
View directory record Official record
Conditions
Morbid Obesity, Opioid-Related Disorders, Surgery--Complications, Sleep Apnea Syndromes
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Mar 21, 2021 · Synced Sep 15, 2026, 5:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

An Observational Study of Post-cesarean Delivery Respiratory Patterns Using a Non-invasive Minute Ventilation Monitor (Exspiron ™ System)

NCT02903173
View directory record Official record
Conditions
Pregnancy, Analgesia, Respiratory Depression, Obstructive Sleep Apnea, Postpartum
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2018
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 23, 2019 · Synced Sep 15, 2026, 5:06 PM EDT
Completed Phase 4 Interventional Results available

Sugammadex vs Placebo to Prevent Residual Neuromuscular Block

NCT02728726
View directory record Official record
Conditions
General Surgery
Interventions
Sugammadex, Placebo
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 100 Years
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
2
States / cities
Jacksonville, Florida • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 13, 2022 · Synced Sep 15, 2026, 5:06 PM EDT
Completed No phase listed Observational

Critical Respiratory Events in Children Requiring Naloxone: Naloxone Use as Opioid Safety Measure

NCT01860885
View directory record Official record
Conditions
Opioid Induced Respiratory Depression
Interventions
Not listed
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
1 Day and older
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 22, 2013 · Synced Sep 15, 2026, 5:06 PM EDT
Terminated No phase listed Observational

Incidence of Respiratory Depression in Cesarean Section

NCT01181843
View directory record Official record
Conditions
Respiratory Depression, Postoperative Pain
Interventions
Not listed
Lead sponsor
Wake Forest University
Other
Eligibility
18 Years to 55 Years · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Nov 7, 2017 · Synced Sep 15, 2026, 5:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Wearable Wireless Respiratory Monitoring System That Detects and Predicts Opioid Induced Respiratory Depression

NCT06442488
View directory record Official record
Conditions
Respiratory Insufficiency, Clinical Deterioration
Interventions
Respiratory Monitoring System
Device
Lead sponsor
Jeffrey Joseph
Other
Eligibility
18 Years to 70 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Sep 15, 2026, 5:06 PM EDT