Clinical trials: Altitude
High Altitude Pulmonary Edema, Acute Mountain Sickness
Randomized, Controlled Trial of Regular Sildenafil Citrate in the Prevention of Altitude Illness
The purpose of this study is to determine whether regular oral use of sildenafil citrate can prevent or attenuate high altitude illnesses.
- Trial name
- NCT00627965
- Testing
- Sildenafil citrate
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- Altitude Physiology Expeditions
Hypertensive Disorder of Pregnancy, Pulmonary Arterial Hypertension
A Prospective Longitudinal Observational Cohort Study of Pregnant Women Residing at High Altitude in Bolivia
In this study, the investigators will follow two small cohorts of pregnant women: a cohort of healthy women with uncomplicated pregnancies residing at high altitude, a control group of healthy women with uncomplicated pregnancies…
- Conditions
- Hypertensive Disorder of Pregnancy, Pulmonary Arterial Hypertension, Intrauterine Growth Restriction
- Trial name
- NCT07312227
- Where
- 2 sites in United States, Bolivia
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
High Altitude, Hypobaric Hypoxia
The Effect of Acute High Altitude Exposure on Rescuer Performance and Patient Care
Rescue services in mountainous regions are frequently called to missions at altitudes >3000 m. Under the difficult conditions of acute exposure to altitude, the crews then have to undertake demanding medical and rescue measures.
- Conditions
- High Altitude, Hypobaric Hypoxia, Risk Reduction
- Trial name
- NCT06446427
- Testing
- Acute high altitude exposure, Acute high altitude exposure, with supplementary oxygen, Subacute high altitude exposure, after having spent a night at high altitude
- Where
- 2 sites in Switzerland
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Acute Mountain Sickness
HighCycle Study: Effect of Acetazolamide on Acute Mountain Sickness in Women Compared to Men
Millions of people travel to high altitude for work or leisure activities and are exposed to reduced inspiratory oxygen partial pressure and hypoxemia that may lead to altitude illness, among which the most common form is acute…
- Trial name
- NCT06499727
- Testing
- Acetazolamide
- Where
- Kyrgyzstan
- Volunteers
- 303 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Altitude Hypoxia
Effect of Acetazolamide on Lung Water Content by Ultrasound in Lowlanders Older Than 40 Years at Altitude
Randomized, placebo controlled trial evaluating the effect of acetazolamide on lung water content by ultrasound in lowlanders older than 40 years travelling from 760 m to 3'100 m.
- Trial name
- NCT03539367
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- Kyrgyzstan
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Exercise Performance
Creatine Supplementation At Simulated Altitude
Creatine supplementation has been shown to increase exercise performance at sea level. The goal of this study is to determine the effects of creatine supplementation on exercise performance at simulated altitude.
- Trial name
- NCT06489587
- Testing
- Creatine
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- California Polytechnic State University-San Luis Obispo
Acute Mountain Sickness
Prevention of Acute Mountain Sickness by Intermittent Hypoxia
Acclimatization by mountaineering prior to high altitude sojourns have shown to be effective in prevention of acute mountain sickness (AMS).
- Trial name
- NCT00559832
- Testing
- Hypoxic Exposure
- Where
- Germany
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Heidelberg University
Hearing Loss, Noise-Induced, Eustachian Tube Dysfunction
Hearing/ET/Vestibular in Balloon Pilots
This study looks at whether working as a hot-air balloon pilot-being exposed to burner noise, changes in air pressure/temperature, and vertical acceleration-is linked to changes in hearing, Eustachian tube function, and…
- Conditions
- Hearing Loss, Noise-Induced, Eustachian Tube Dysfunction, Vestibular Disorders, Occupational Exposure
- Trial name
- FLIGHT-EAR (NCT07200310)
- Testing
- Non-invasive audiologic and vestibular assessments
- Where
- 2 sites in Turkey (Türkiye)
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- Gaziosmanpasa Research and Education Hospital
High Altitude Pulmonary Edema
Comparison of CPAP and Gamow Bag Ventilation to Treat HAPE
High altitude pulmonary edema (HAPE) is mostly treated with supplemental oxygen, nifedipine 30mg twice a day, rest, limiting cold exposure and descent (simulated or actual) Gamow Bag provides simulated descent and buy time for…
- Trial name
- CPAP (NCT04710953)
- Testing
- Continuous positive airway pressure machine
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- sultan mehmood kamran
Altitude Training Adaptation, Cognitive Function
Effects of Bicarbonate Spring Water Immersion on Cognitive Reliability and Post-Maximal Exercise Recovery in Adolescent Rowers During Altitude Training: A Sex-Stratified Three-Arm Randomized Controlled Trial
This randomized controlled trial aims to investigate the effects of hot spring bath therapy on cognitive function recovery, cerebral hemodynamics, and athletic performance in athletes undergoing altitude training.
- Conditions
- Altitude Training Adaptation, Cognitive Function, Cerebral Hemodynamics, Exercise Performance
- Trial name
- NCT07608913
- Testing
- Control Group：Natural Recovery, Hot water immersion group, hot spring immersion group
- Where
- China
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Macao Polytechnic University
High Altitude
The Study of Personalized Health Check-up Programs and Standards for High-altitude Migrant Populations
By using wearable devices to monitor and record the physiological data changes and health outcomes (incidence and severity of high-altitude illnesses) of high-altitude migrants at different stages (pre-entry, acute/chronic…
- Trial name
- NCT07018193
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Capital Medical University
Neonatal Congenital Heart Disease
Optimization of Two-Indicator Screening Protocol for Neonatal Congenital Heart Disease at High Altitude
This is a prospective observational screening study. First, researchers will optimize a two-indicator screening protocol for neonatal congenital heart disease (NCHD) adapted to high-altitude regions and evaluate its screening…
- Trial name
- NCT07901998
- Volunteers
- 6,300 people, healthy volunteers welcome
- Sponsor
- Children's Hospital of Fudan University
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
Arrhythmias, Cardiac, Tachycardia, Ventricular
Cardiac Arrhythmias at Extreme Altitude
Background: Exposure to high altitudes has been associated with an increased risk of cardiac arrhythmias in healthy subjects and an increased risk of sudden cardiac death.
- Conditions
- Arrhythmias, Cardiac, Tachycardia, Ventricular, Tachycardia, Supraventricular, Bradycardia
- Trial name
- SUMMIT (NCT05676398)
- Testing
- Ambulatory rhythm recording
- Where
- Nepal
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
Hypoxia, Altitude, Brain
The Cerebral Hemodynamic and Cognitive Effects of Acute Resveratrol Administration in Young, Healthy Adults at Stimulated Altitude.
Background: Vaso-active polyphenols have been proposed to enhance cognitive performance. Oral administration with the non-flavonoid polyphenol, resveratrol, has been found to modulate cerebral blood flow (CBF); yet, this has not…
- Trial name
- NCT03541993
- Testing
- Resveratrol
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Northumbria University
Healthy, Growth Hormone
Ghrelin, Growth Hormone and Growth Factors at High Altitude
Regulation of ghrelin, growth hormone and growth factors at high altitude and their change during ascent to high altitude has not been studied in depth yet.
- Trial name
- NCT00966134
- Testing
- exposure to high altitude
- Volunteers
- healthy volunteers welcome
- Sponsor
- Medical University of Vienna
Hypoxia, Altitude
The Impact of Physical Training Under Normobaric Hypoxia on Oxidative Stress Level, Inflammatory State, Intestinal Damage, and Mitochondrial Metabolism in Young Males
Cognitive assessment of the influence of a 4-week proprietary training program under normobaric hypoxia conditions on the levels of inflammatory markers, disturbances in prooxidant-antioxidant balance, degree of intestinal…
- Trial name
- NCT06204731
- Testing
- Exercise and environmental conditions
- Where
- Poland
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University School of Physical Education, Krakow, Poland
Pain
Pain Threshold Measurements in High and Low Altitude Among Healthy Volunteer Adults: A Comparative Study
one measurement of pain threshold in high altitude and in low altitude using pressure algometer and Situational pain scale.
- Trial name
- NCT02752854
- Testing
- pain threshold measurement
- Volunteers
- 484 people, healthy volunteers welcome
- Sponsor
- Taif University
Gut Microbiota
Temporal Changes in the Gut Microbiota Before and After Migrating to High Altitude
This prospective observational cohort study aims to learn about temporal changes in the gut microbiota before and after migrating to high altitudes in healthy participants.
- Trial name
- NCT05901896
- Testing
- there are no intervention
- Where
- China
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Liaocheng People's Hospital
Altitude Hypoxia
Effect of Acetazolamide on Right Heart Function at Rest in Lowlanders Older Than 40 Years at Altitude.
Randomized, placebo controlled trial evaluating efficacy of acetazolamide on right heart function at rest in lowlanders older than 40 years travelling from 760 m to 3'100 m.
- Trial name
- NCT03540914
- Testing
- ACETAZOLAMIDE oral capsule
- Where
- Kyrgyzstan
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- University of Zurich