Clinical trials: Hyperoxia
Retinal Oxygenation, Retinal Blood Flow
Effect of Systemic Hypoxia and Hyperoxia on Retinal Oxygen Saturation
Adequate perfusion and oxygenation is essential for the function of the inner retina. Although it is known that oxygen tension is very well autoregulated in the retina, the physiological mechanisms behind this regulation process…
- Trial name
- NCT01692821
- Testing
- 100% oxygen breathing, 15% oxygen in N2 breathing, 12% oxygen in N2 breathing
- Where
- Austria
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Hyperoxemia, Cerebrovascular Circulation
HYPER MIND - Hyperoxia Effects on Cerebral Hemodynamics
This study aims to better understand how short periods of exposure to high oxygen levels affect blood flow in the brain of patients who are intubated and mechanically ventilated in the Intensive Care Unit (ICU).
- Conditions
- Hyperoxemia, Cerebrovascular Circulation, Cerebral Autoregulation, Critical Illness
- Trial name
- HYPER-MIND (NCT07377162)
- Testing
- Normobaric Hyperoxic Stimulus (NBHO)
- Where
- Belgium
- Volunteers
- 80 people
- Sponsor
- Erasme University Hospital
AKI, Renal Replacement Therapy
Hyperoxia vs Normoxia During Cardiopulmonary Bypass
This single-center randomized controlled pilot trial evaluates the effects of intraoperative hyperoxia compared with normoxia during cardiopulmonary bypass (CPB) in adult patients undergoing elective cardiac surgery.
- Conditions
- AKI, Renal Replacement Therapy, NGAL, Arrythmia
- Trial name
- IPEROXIA (NCT07510672)
- Testing
- Hyperoxia group, Normoxia group (control)
- Where
- Italy
- Volunteers
- 104 people
- Sponsor
- University of Padova
Ocular Physiology, Regional Blood Flow
Effects of Vitamin C on Hyperoxia-Induced Reduction of Retinal Blood Flow
High arterial blood oxygen tension leads to vasoconstriction of retinal vessels, possibly related to an interaction between reactive oxygen species and endothelium-derived vasoactive factors.
- Trial name
- NCT00712907
- Testing
- vitamin C (Mayrhofer) 24mg/min i.v. for 64 min, 100% O2 (AGA) two times for 12 min
- Where
- Austria
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Hypoxia, Brain, Hyperoxia
The Effect of Respiratory Challenge on the BOLD Signal
The purpose of this research study is to better understand how blood flow and metabolism are different between normal controls and patients with disease.
- Conditions
- Hypoxia, Brain, Hyperoxia, Hypercapnia, Hypocapnia
- Trial name
- NCT04258774
- Testing
- Carbon Dioxide
- Where
- United States
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Washington University School of Medicine
Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) (ICD-10 G93.3)
Investigating the Effects of Intermittent Hypoxia-Hyperoxia Treatment (IHHT) in People With Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) to Improve Fatigue, Pain, and Quality of Life by Targeting Mitochondrial Dysfunction and Autonomic Nervous System Impairment
This study is testing a new treatment for people with Myalgic Encephalomyelitis/Chronic Fatigue Syndrome (ME/CFS) and long-term symptoms after COVID-19.
- Trial name
- REenergizeME (NCT07317401)
- Testing
- Intermittent hypoxia-hyperoxia treatment (IHHT)
- Where
- Denmark
- Volunteers
- 104 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
Postoperative Cardiac Complication
VitamIn and oXygen Interventions and Cardiovascular Events
This study examines the risks and benefits of antioxidants and normal versus high inspiratory oxygen fraction during anaesthesia.
- Trial name
- VIXIE (NCT03494387)
- Testing
- Oxygen, Antioxidants
- Where
- 4 sites in Denmark
- Volunteers
- 600 people
- Sponsor
- University Hospital Bispebjerg and Frederiksberg
Coronary Artery Disease
Impact of Breathing Maneuvers on the Oxygenation Supply of the Heart Assessed With MRI in Patients With Coronary Artery Disease
Patients with an impaired blood supply of the heart routinely receive oxygen in order to improve or preserve the oxygen supply of the heart muscle in acute cardiac care.
- Trial name
- CADOS-CMR (NCT02233634)
- Testing
- Oxygen, Hyperventilation Breath-hold (HVBH), HVBH with Oxygen
- Where
- Switzerland
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Retinopathy of Prematurity
Time Outside Target Oxygen Saturation Range in Preterm Infants and Long Term Outcomes and Preterm Infants
The purpose of this study is to determine if there is a relationship between time spent out the targeted oxygen saturation range in preterm infants is associated with long-term outcomes such as Retinopathy of Prematurity.
- Trial name
- SAT01ROP (NCT00845624)
- Where
- United States
- Volunteers
- 102 people, healthy volunteers welcome
- Sponsor
- University of Virginia
Cerebrovascular Disorders
HYPEROXIA Responses and ROS
30 participants (15 males and 15 females) who are ≥18 - ≤ 40 years old and considered healthy will be enrolled into this study to test the role of reactive oxygen species (ROS) in regulating cerebral blood flow (CBF).
- Trial name
- NCT05958303
- Testing
- Antioxidant Cocktail
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Oxygen Toxicity, Oxidative Stress
Effect of Hydrogen Gas on Hyperbaric Oxygen Toxicity
The goal of this trial is to investigate whether adding a small fraction of hydrogen gas to an oxygen-enriched breathing mixture can reduce pulmonary oxygen toxicity (POT) in healthy and active divers from the Swedish Armed…
- Conditions
- Oxygen Toxicity, Oxidative Stress, Hyperoxia, Hyperbaric Oxygen
- Trial name
- NCT07263399
- Testing
- Inhaled Hydrogen-Enriched Oxygen Gas, Inhaled Nitrogen-Enriched Oxygen Gas
- Where
- 2 sites in Sweden
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Blekinge Institute of Technology
Cardiac Surgery, Delirium - Postoperative
Effect of Hyperoxia or Hypoxemia on the Incidence of Delirium in Patients After Cardiac Surgery
Our goal was to study the effect of hyperoxia or hypoxemia on the incidence of delirium in patients after cardiac surgery.
- Conditions
- Cardiac Surgery, Delirium - Postoperative, Hyperoxia, Hypoxemia
- Trial name
- NCT07548905
- Where
- China
- Volunteers
- 1,000 people
- Sponsor
- Southeast University, China
Premature Infant, Oxygen Therapy
SCO2T (Servo vs. Servo)
Most premature babies require oxygen therapy. There is uncertainty about what oxygen levels are the best. The oxygen levels in the blood are measured using a monitor called a saturation monitor and the oxygen the baby breathes is…
- Conditions
- Premature Infant, Oxygen Therapy, Hypoxia, Hyperoxia
- Trial name
- NCT04546568
- Testing
- Servo control (closed-loop automatic control of the inspiratory fraction of oxygen (FiO2)) - Leoni plus CLAC, Servo control (closed-loop automatic control of the inspiratory fraction of oxygen (FiO2)) - IntellO2 OAM
- Where
- United Kingdom
- Volunteers
- 11 people, healthy volunteers welcome
- Sponsor
- University of Edinburgh
Neuropathic Foot Ulcer, Foot Ulcer
Vaporous Hyperoxia Therapy (VHT) in the Treatment of Foot Wounds
The purpose of this study is to evaluate the effectiveness of Vaporous Hyperoxia Therapy (VHT), previously named Misty (WTS-1000) for the treatment of chronic foot ulcers.
- Trial name
- VHT1 (NCT04244201)
- Testing
- Vaporous Hyperoxia Therapy
- Volunteers
- 31 people
- Sponsor
- Vaporox
Traumatic Brain Injury | Patient
Impact of Inspired Oxygen Fraction on Outcome in Patients With Traumatic Brain Injury
Aim of the study is to investigate the impact of two different fractions of inspired oxygen (FiO2) on outcome in patients with severe traumatic brain injury (TBI).
- Trial name
- BRAINOXY (NCT01201291)
- Testing
- Normobaric oxygen
- Where
- 4 sites in Finland
- Volunteers
- 67 people
- Sponsor
- Kuopio University Hospital
Hyperoxia
Proteomics for Identification of Hyperoxia-induced Changes in Protein Expression
Aim of the present study is to investigate the influence of hyperoxia on the protein expression using the differential analysis of protein expression in tissues (proteomics).
- Trial name
- NCT02553668
- Testing
- Oxygen (FiO2 1,0), Facemask
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University Hospital of Cologne
Cardiac Arrest
Hyperoxia Before and After Cardiac Arrest and Myocardial Damage
Several studies show how patients with hyperoxia after cardiac arrest has increased mortality, but the association of hyperoxia before cardiac arrest and myocardial damage has never been investigated.
- Trial name
- NCT03571074
- Testing
- Oxygenation
- Where
- Denmark
- Volunteers
- 163 people
- Sponsor
- University Hospital Bispebjerg and Frederiksberg
Hypoxia, COPD
Intelligent Oxygen Therapy During Activities of Daily Living
The aim of this study is to assess whether an auto-titrating oxygen system can maintain constant oxygen saturations (SpO2) in patients who are on long-term oxygen therapy (LTOT) during activities of daily living.
- Conditions
- Hypoxia, COPD, Hyperoxia
- Trial name
- NCT02683486
- Testing
- Intelligent oxygen therapy (an auto-titrating oxygen system), Long-term oxygen therapy
- Where
- United Kingdom
- Volunteers
- 25 people
- Sponsor
- Imperial College London
Hyperoxemia, Oxygen Reserve Index
Oxygen Reserve Index and Prevention of Hyperoxemia
In patients under general anesthesia, the oxygen level (FiO2) used in inspiration is usually adjusted by monitoring the peripheral oxygen saturation level (SpO2).
- Conditions
- Hyperoxemia, Oxygen Reserve Index, Hyperoxia, Fraction of Inspired Oxygen
- Trial name
- NCT05505032
- Testing
- Oxygen, Masimo Root Radical 7
- Where
- Turkey (Türkiye)
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Baskent University Ankara Hospital
Cardiogenic Shock, Extracorporeal Membrane Oxygenation
Normoxemic Versus Hyperoxemic Extracorporeal Oxygenation in Patients Supported by Veino-arterial ECMO for Cardiogenic Shock
Because of dual oxygenation and oxygenator performance (PO2 postoxygenator up to 500 mmHg), hyperoxemia (PaO2 > 150 mmHg) is frequent in veino-arterial ECMO, especially in the lower part of the body, which is mainly oxygenated by…
- Trial name
- ECMOxy (NCT04990349)
- Testing
- Oxygen gas
- Where
- France
- Volunteers
- 60 people
- Sponsor
- Centre Hospitalier Universitaire de Besancon