Clinical trials: High Altitude Effects
High Altitude Cerebral Edema
Spectroscopic and Diffusion Weighted Analysis of the Effects of Dexamethasone on High Altitude Cerebral Oedema (HACE)
When the brain detects a drop in oxygen levels in the blood (hypoxia) there is a compensatory increase in blood flow. Acute mountain sickness (AMS) is a cluster of symptoms which commonly occur in those ascending to high altitude…
- Trial name
- D4H (NCT03341676)
- Testing
- Dexamethasone
- Where
- United Kingdom
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- University Hospitals Coventry and Warwickshire NHS Trust
High Altitude Pulmonary Hypertension
Highlanders With High Altitude Pulmonary Hypertension (HAPH), 6 Minute Walk Distance (6MWD) Assessed at 3200m With and Without Supplemental Oxygen Therapy (SOT)
The investigators aim to study the effect of SOT in highlanders with high altitude pulmonary hypertension (HAPH) who permanently live >2500m on 6-minute walk distance (6MWD) assessed at 3200m.
- Trial name
- NCT06489743
- Testing
- 6-minute walk test (6MWT)
- Where
- Kyrgyzstan
- Volunteers
- 24 people
- Sponsor
- University of Zurich
Chronic Obstructive Pulmonary Disease (COPD)
Altitude Related Illness In Patients With Respiratory Disease
Randomized, placebo controlled trial evaluating efficacy of dexamethasone in preventing acute mountain sickness in lowlanders with chronic obstructive lung disease travelling from 700 m to 3200 m.
- Trial name
- NCT02450968
- Testing
- Dexamethasone
- Where
- Kyrgyzstan
- Volunteers
- 124 people
- Sponsor
- University of Zurich
Acute Mountain Sickness
Sickness Evaluation at Altitude With Acetazolamide at Relative Doses
The specific aim of this study is to evaluate whether acetazolamide 125mg daily is no worse than acetazolamide 250mg daily in decreasing the incidence of acute mountain sickness (AMS) in travelers to high altitude.
- Trial name
- SEAWARDII (NCT03828474)
- Testing
- Acetazolamide Pill
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Stanford University
Body Temperature Changes, Heat Stress
Working in the Heat at Simulated Altitude: Effects of Normobaric Hypoxia on Physiological Strain
Extreme heat events are becoming more frequent, intense, and prolonged, increasing the risk of heat-related illness among workers performing physically demanding work in hot environments.
- Conditions
- Body Temperature Changes, Heat Stress, Heat Exposure, Heat Fatigue
- Trial name
- NCT07664462
- Testing
- Simulated Occupational heat exposure under normoxic conditions, Simulated Occupational heat exposure under hypoxic conditions
- Where
- Canada
- Volunteers
- 20 people
- Sponsor
- University of Ottawa
High Altitude, Healthy
Assessment of Six-minute Walking Distance Between Sea Level LA vs. High Altitude HA After Re-ascent in Healthy Individuals
To study the effect of a re-ascent after a one-week stay at sea level (after prior descent from 2850m) to high altitude (Quito Ecuador: 2850m) on six-minute walking distance and other scores in healthy individuals, who live…
- Conditions
- High Altitude, Healthy, Healthy Adult, Six-minute Walk Test
- Trial name
- NCT07797088
- Testing
- Re-Ascent sea level to 2850m
- Where
- Switzerland
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Silvia Ulrich Somaini
High Altitude Pulmonary Edema, Non-Invasive Positive Pressure Ventilation
Non-Invasive Positive Pressure Ventilation Management of High Altitude Pulmonary Edema
Trial of Non-Invasive Positive Pressure Ventilation Management of High Altitude Pulmonary Edema
- Conditions
- High Altitude Pulmonary Edema, Non-Invasive Positive Pressure Ventilation, Hypoxia
- Trial name
- NCT04288219
- Testing
- Non-Invasive Positive Pressure Ventilation, Nifedipine, supplemental oxygen
- Where
- Nepal
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Hypoxia, Altitude Hypoxia
The Psychophysiological Effect of Simulated and Terrestrial Altitude
The aim of this study is to compare the psychophysiological effects of terrestrial altitude with a normobaric, hypoxic situation.
- Conditions
- Hypoxia, Altitude Hypoxia, Altitude Sickness, Altitude
- Trial name
- Hypoxia (NCT04075565)
- Testing
- Terrestrial altitude, Cloud 9
- Where
- 3 sites in Switzerland
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Applied Sciences and Arts of Southern Switzerland
Respiratory Distress Syndrome, Pediatric, Altitude Hypoxia
Altitude and Outcomes in Pediatric ARDS: A Multicenter Study
This multicenter observational study will evaluate the association between geographic altitude, availability of critical care resources, and clinical outcomes in children with pediatric acute respiratory distress syndrome…
- Conditions
- Respiratory Distress Syndrome, Pediatric, Altitude Hypoxia, High Altitude Effects
- Trial name
- LARed-ALT (NCT07193771)
- Testing
- Geographic Altitude
- Where
- 20 sites in Bolivia, Chile and 3 more
- Volunteers
- 1,600 people
- Sponsor
- Latin American Pediatric Collaborative Network
Hypoxia-Induced Pulmonary Artery Hypertension
Effects of Bosentan (Tracleer) in the Course of Pulmonary Artery Hypertension Induced by Hypoxia
Excessive rise in pulmonary artery pressure induced by low oxygen tension (hypoxia) is one of the factors implicated in high-altitude pulmonary oedema.
- Trial name
- NCT00260819
- Testing
- Bosentan, Bosentam TRACLEER
- Where
- France
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Assistance Publique - Hôpitaux de Paris
High Altitude Pulmonary Edema
Susceptibility to High Altitude Pulmonary Edema in Subjects With Increased Hypoxic Pulmonary Vasoconstriction
It has been shown, that subjects susceptible to high altitude pulmonary edema (HAPE)are characterized by an abnormal increase of pulmonary artery pressure at rest in hypoxia and during exercise in normoxia.
- Trial name
- NCT00559442
- Testing
- Altitude Exposure:
- Where
- Germany
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Heidelberg University
Pulmonary Edema
Pulmonary Function at High-Altitude
Based on the findings of decreased vital capacity, decreased FEV1 and increased closing volume after ascent to high altitude, some investigators suggest the presence of a subclinical high altitude pulmonary edema (HAPE).
- Trial name
- NCT00604227
- Testing
- Hypoxic Exposure
- Where
- Germany
- Volunteers
- 34 people, healthy volunteers welcome
- Sponsor
- Heidelberg University
Acute Mountain Sickness
The Effects of Intermittent Hypoxia on Acute Hypoxic Injury
This study intends to further reveal the effectiveness of intermittent hypoxia in preventing acute hypoxic injury.
- Trial name
- NCT05733338
- Testing
- Intermittent Hypoxia
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Capital Medical University
Effect of High Altitude
Effect of High Altitude Exposure, Acclimatization and Re-exposure on Cerebral Autoregulation in Lowlanders
Prospective interventional trial in lowlanders evaluating the effect of acute exposure, acclimatization and re-exposure to high altitude on cerebral autoregulation
- Trial name
- NCT02829255
- Testing
- altitude exposure
- Where
- Switzerland
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Gastrointestinal Injury, Acute Mountain Sickness
Gut-microbiota Targeted Nutritional Intervention for Gut Barrier Integrity at High Altitude
The aim of this randomized, crossover clinical trial is to determine the efficacy of a gut microbiota-targeted nutritional intervention containing a blend of fermentable fibers and polyphenols (FP) for mitigating increases in GI…
- Trial name
- NCT04111263
- Testing
- FP, High altitude, Sea level
- Where
- United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Pulmonary Hypertension
Acute Exposure to High Altitude on Exercise Capacity
Randomized crossover Trial in patients with Pulmonary Hypertension (PAH, CTEPH) to assess the acute response to High Altitude (2500m above sea level) in constant loaded exercise capacity.
- Trial name
- NCT03637153
- Testing
- Assessment at Low Altitude (470m above sea level), Exposure to High Altitude (2500m above sea level)
- Where
- Switzerland
- Volunteers
- 28 people
- Sponsor
- University of Zurich
Altitude Hypoxia
Effect of Acetazolamide on Visuo-motor Learning in Lowlanders Older Than 40 Years at Altitude
Randomized, placebo controlled trial evaluating the effect of acetazolamide on visuo-motor learning performance in lowlanders older than 40 years travelling from 760 m to 3'100 m.
- Trial name
- NCT03536520
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- Kyrgyzstan
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Orthopedic Surgery, Postoperative Complications
Postoperative Complications of Orthopedic Surgery in Patients From High-altitude Regions
This study will focus on orthopedic surgery patients from high-altitude regions, utilizing smart wearables and monitoring tools to gather perioperative data, including heart rate, oxygen saturation, sleep quality, stress levels…
- Conditions
- Orthopedic Surgery, Postoperative Complications, High Altitude
- Trial name
- NCT06638658
- Volunteers
- 400 people
- Sponsor
- West China Hospital
Chronic Mountain Sickness
Erythrocytapheresis for Chronic Mountain Sickness
The study aims to explore the efficacy and safety of erythrocytapheresis in chronic mountain sickness
- Trial name
- NCT04557995
- Testing
- Erythropheresis
- Where
- China
- Volunteers
- 112 people
- Sponsor
- Third Military Medical University
High Altitude Pulmonary Edema
Effect of Acetazolamide on Subclinical High-Altitude Pulmonary Edema Detected by Lung Ultrasonography
The overall goal of this study is to detect preclinical signs of HAPE by lung ultrasonography and evaluate the effectiveness of acetazolamide at decreasing pulmonary edema by using ultrasound.
- Trial name
- NCT03490916
- Testing
- Acetazolamide
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Vincent Kan