Clinical trials: Altitude
Hypertension, Pulmonary, Altitude Sickness
Efficacy Study of Riociguat and Its Effects on Exercise Performance and Pulmonary Artery Pressure at High Altitude
During ascent to high altitude there is a physiologic response to hypoxia that results in an elevated pulmonary arterial pressure associated with decreased exercise performance, altitude-induced pulmonary hypertension, and high…
- Trial name
- NCT02024386
- Testing
- Riociguat
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Richard Moon
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
Pulmonary Edema, Cerebral Edema
Tadalafil and Acetazolamide Versus Acetazolamide in Acute Mountain Sickness Prevention
To evaluate the additive value of tadalafil given together with Diamox (acetazolamide) in preventing acute mountain sickness in travelers to high altitude areas.
- Trial name
- NCT01060969
- Testing
- Tadalafil and acetazolamide, Acetazolamide
- Where
- 3 sites in Israel
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- Sheba Medical Center
Hypoxia
Neuropsychological Sleep Physical Exercise Hypoxia
Aim: To evaluate the influence of oxygen deficit on the cognitive performance and also about the architecture and sleep efficiency in volunteers subjected to mild and moderate exercise in a hypobaric chamber.
- Trial name
- Hypoxia (NCT01386814)
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Federal University of São Paulo
Hypoxia, Mental Disorder
Going to Altitude With Anxious-depressive Symptoms
Introduction: Currently, there is a lack of international guidelines or clinical recommendations for individuals with mental illnesses (i.e., bipolar disorder, posttraumatic stress disorder) going on high altitude sojourns.
- Trial name
- Psychoxie (NCT05323864)
- Testing
- Hypoxia
- Where
- Austria
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- Universitaet Innsbruck
Oxidative Stress, Cell-derived Microparticles
Pik Lenin High Altitude Research Expedition 2009
Exposure to hypobaric hypoxia demands maximum effort of the body and can lead to high altitude illnesses. Recently, there is rising interest on coagulation activation during trekking and mountaineering in higher regions and on…
- Trial name
- PLHARE (NCT01571687)
- Testing
- antioxidant supplements
- Where
- Switzerland
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Healthy
Effect of Short-term Descent to Low Altitude in Healthy Residents at Moderate Altitude (>1000 m.a.s.l.).
The purpose of this study is to investigate the effect of short-term descent in healthy residents at moderate altitude (>1000 m.a.s.l.).
- Trial name
- NCT05826808
- Testing
- Descent to low altitude
- Where
- Switzerland
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Tsogyal Latshang
Healthy, Healthy Adult
Sleep-Assessment in Patients Between High Altitude HA vs. Sea Level LA in Healthy Individuals H
To study the effect of relocation from high altitude (Quito Ecuador: 2850m) to sea level on sleeping parameters by polygraphy in healthy individuals, who live permanently >2600m.
- Conditions
- Healthy, Healthy Adult, High Altitude Effects, High Altitude
- Trial name
- NCT07801950
- Testing
- Descent from 2850m to sea level and re-ascent back to 2850m
- Where
- Switzerland
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Silvia Ulrich Somaini
Healthy Adults, Mechanical Ventilation Dependence
Effects of Breathing Training and Nitrate on Exercise at Simulated Altitude
This study investigates whether respiratory muscle training (RMT) and dietary nitrate supplementation can improve exercise tolerance under simulated moderate altitude conditions.
- Conditions
- Healthy Adults, Mechanical Ventilation Dependence, Hypoxia, Exercise Training
- Trial name
- NCT07216755
- Testing
- Respiratory Muscle Training (RMT), Dietary Supplement: Beetroot Juice Concentrate
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Embry-Riddle Aeronautical University
Glucose Metabolism, High Altitude
High Altitude and Exogenous Carbohydrate Oxidation
Recent studies have reported that oxidation of exogenous carbohydrate is reduced under acute hypobaric hypoxic (high altitude; HA) conditions compared to normoxia (sea level; SL) in native lowlanders.
- Trial name
- NCT03851744
- Testing
- Sea Level, High Altitude
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Obstructive Sleep Apnea Syndrome
Treatment of Patients With the Obstructive Sleep Apnea Syndrome at Altitude
The purpose of the study is to investigate the effect of acetazolamide as a treatment for sleep related breathing disturbances in patients with the obstructive sleep apnea syndrome living at low altitude during a sojourn at…
- Trial name
- NCT00714740
- Testing
- acetazolamide
- Where
- Switzerland
- Volunteers
- 49 people
- Sponsor
- University of Zurich
Precapillary Pulmonary Hypertension, Interstitial Lung Disease
Patients With Pulmonary Hypertension or Interstitial Lung Disease at Altitude - Effect of Oxygen on Exercise Performance
The purpose of this study is to investigate the effect of travelling to moderate altitude and of nocturnal oxygen therapy during a stay at moderate altitude on exercise performance of patients with pulmonary hypertension or with…
- Trial name
- NCT02143687
- Testing
- Moderate altitude sojourn, Low altitude sojourn, Oxygen
- Where
- Switzerland
- Volunteers
- 30 people
- Sponsor
- University of Zurich
High Altitude Pulmonary Hypertension, Maximal Exercise Capacity
Maximal Exercise Capacity at 2500 m of High Altitude
The impact of hypoxia on maximal work rate during incremental ramp exercise within 3-6 hours after arriving at 2500m of high altitude in patients with precapillary pulmonary hypertension
- Trial name
- NCT05264324
- Testing
- Maximal Exercise Capacity
- Where
- Switzerland
- Volunteers
- 28 people
- Sponsor
- University of Zurich
High Altitude, Six-minute Walk Test
Assessment of Six-minute Walking Distance 6MWD Between High Altitude HA vs. Sea Level LA in Healthy Individuals H
To study the effect of descent from high altitude (Quito Ecuador: 2850m) to sea level on six-minute walking distance and scores in healthy individuals, who live permanently >2600m.
- Conditions
- High Altitude, Six-minute Walk Test, High Altitude Effects, Healthy
- Trial name
- NCT07801872
- Testing
- Descent from 2850m to sea level
- Where
- Switzerland
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Silvia Ulrich Somaini
Hypoxia, Exogenous Ketosis
The Effects of Ketone Ester Supplementation During a 5 Week Live High, Train Low Altitude Training Camp
This study aims to investigate the effects of post-exercise and pre-sleep exogenous ketosis via oral ketone ester supplementation during a 5 week simulated altitude training camp.
- Trial name
- NCT06596083
- Testing
- Ketone ester supplement
- Where
- Belgium
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- KU Leuven
Diabetes
Altitude, Exercise and Glucose Metabolism in Pre-diabetic Men
Concentric (CE) and eccentric (EE) exercises may differently affect glucose metabolism which may be additionally modified when exercises are performed in hypoxia, e.g.
- Trial name
- NCT01890876
- Testing
- Walking uphill, Walking downhill
- Where
- Austria
- Volunteers
- 32 people
- Sponsor
- Universitaet Innsbruck
Gastrointestinal Endoscopy
Etomidate Combined With Propofol Versus Propofol for Sedation in High-Altitude Patients During Gastroscopy: a Randomized Multicenter Clinical Trial
One of the most common adverse events during sedated gastrointestinal endoscopy is hypoxemia, which can lead to serious consequences.
- Trial name
- NCT07079176
- Testing
- etomidate combined with propofol, propofol
- Volunteers
- 732 people
- Sponsor
- RenJi Hospital
Hypoxia, Normobaric Hypoxia
Effect of Acute Hypoxia on RIght VEntRicular Function in Healthy Adults.
More and more people are engaging in sports in the mountains, including individuals with heart or lung diseases. At the same time, such diseases are becoming more common in Switzerland.
- Conditions
- Hypoxia, Normobaric Hypoxia, Altitude Hypoxia, Right Heart Function
- Trial name
- RIVER-H (NCT07431567)
- Testing
- Normobaric Hypoxia
- Where
- 2 sites in Switzerland
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Mona Lichtblau
Altitude Hypoxia
Effect of Acetazolamide on Sleep Disordered Breathing in Lowlanders Older Than 40 Years at Altitude
Randomized, placebo controlled trial evaluating the effect of acetazolamide on sleep disordered breathing in lowlanders older than 40 years travelling from 760 m to 3'100 m.
- Trial name
- NCT03536507
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- Kyrgyzstan
- Volunteers
- 185 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Hypoxia
Ketone Esters for Optimization of Operator Performance in Hypoxia
The primary purpose of the study was to investigate effects of an orally administered ketone ester drink on endurance exercise performance during acute extreme hypoxia.
- Trial name
- HVMN7 (NCT07065864)
- Testing
- Ketone ester
- Where
- United States
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- Florida Institute for Human and Machine Cognition