Clinical trials: Altitude
High Altitude Pulmonary Edema
Prevention of High Altitude Pulmonary Edema
A double-blind placebo controlled study To compare the effect of tadalafil and dexamethasone versus placebo on Ppa and pulmonary edema formation in subjects susceptible to HAPE.
- Trial name
- NCT00274430
- Testing
- dexamethasone 8 mg bid, tadalafil 10mg bid
- Volunteers
- 30 people, healthy volunteers welcome
- 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
Acute Mountain Sickness, High Altitude Pulmonary Edema
Hemodynamic Changes in Altitude Adaptation
We use a new technology (Nexfin from BMEYE-Inventive Hemodynamics) to monitor Cardiac Output, Blood Pressure, Fluid Responsiveness, Pulse Oximetry, Hemoglobin Concentration, Oxygen Delivery in Climbers during their process of…
- Conditions
- Acute Mountain Sickness, High Altitude Pulmonary Edema, High Altitude Cerebral Edema
- Trial name
- NCT01698619
- Where
- Germany
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- Goethe University
Pulmonary Hypertension, Mountain Sickness
Study of the Effects of Iron Levels on the Lungs at High Altitude
The study hypothesis is that body iron levels are important in determining the increase in lung blood pressure that occurs in response to low oxygen levels.
- Trial name
- NCT00952302
- Testing
- Iron sucrose, Normal saline, Venesection
- Where
- Peru
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- University of Oxford
Heart Rate Monitoring
Research Proposal on the Effects of Different Altitude Conditions on Human Time Perception.
The aim of this observational study is to investigate human time perception ability for different time intervals (540 ms, 1080 ms, 1620 ms, 2160 ms, 5 s, 10 s, 20 s, 50 s) under conditions of varying altitudes (500 m, 1000 m…
- Trial name
- NCT07402148
- Testing
- high-altitude environment
- Where
- China
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Qilu Hospital of Shandong University
Altitude Effectiveness
Altitude Training Effectiveness; Is There a Role for Sleep and Menstrual Health?
Therefore, the present study aims to evaluate the role of the impact of altitude on sleep and the menstrual cycle in the inter- and intraindividual variability of altitude training effectiveness.
- Trial name
- FEMHEALTH (NCT07337928)
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Vrije Universiteit Brussel
High Altitude Effects
Effect of Acetazolamide and Methazolamide on Hypoxic Exercise Performance
A single-centered randomized doubled blinded placebo-controlled cross-over trial comparing two the effect of two carbonic anhydrase inhibitors on exercise performance in acute hypoxia.
- Trial name
- NCT05575180
- Testing
- Acetazolamide 250Mg Tab, Methazolamide Pill
- Where
- Canada
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University of Waterloo
Resting Metabolic Rate, Appetite
Effects of Overnight Low Oxygen Exposure on Energy Balance
This research study will evaluate changes in resting metabolic rate, appetite, and heart rate variability following overnight exposure (8 h/night) to normobaric hypoxia (NH) or normobaric normoxic (NN).
- Conditions
- Resting Metabolic Rate, Appetite, Heart Rate Variability
- Trial name
- NCT04151927
- Testing
- Normobaric Hypoxia, Normobaric Normoxia
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Florida State University
Inflammatory Bowel Disease
The Altitude Inflammatory Bowel Disease Study
This is a prospective, controlled and observational study. Participants underwent a 3-hour exposure to hypoxic conditions simulating an altitude of 4,000 meters above sea level (m.a.s.l.) in a hypobaric pressure chamber.
- Trial name
- NCT02849821
- Testing
- hypobaric pressure chamber, Sigmoidoscopy
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Hypoxemia, Altitude Hypoxia
Effects of Continuous Positive Airway Pressure on Peripheral Oxygen Saturation, Work of Breathing, and Exercise Tolerance at Altitude
Dyspnea and exercise intolerance are well known to travelers who have experienced time at high elevations, greater than 2500 meters (8200 feet).
- Trial name
- NCT05971290
- Testing
- Continuous positive airway pressure, Ambient air
- Where
- United States
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Hypoxia, Hypoxia Brain
Study of the Effects of Acute Exposure to Moderate Altitude Hypoxia on Prospective Memory.
The goal of this study is to investigate whether prospective memory, i.e., memory for delayed intentions, is impaired at moderate altitude (4,000m).
- Conditions
- Hypoxia, Hypoxia Brain, Hypoxia Altitude Simulation Test, Hypoxia in Healthy Individuals
- Trial name
- HYPRO (NCT07585227)
- Testing
- Hypoxia exposure, Oxygen administration, Air administration
- Where
- France
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Direction Centrale du Service de Santé des Armées
Acute Mountain Sickness, High Altitude Pulmonary Edema
Sleep and Cerebral Responses to High Altitude
Mechanisms underlying high-altitude intolerance as well as exercise performance limitation in hypoxia still remain to be fully understood.
- Conditions
- Acute Mountain Sickness, High Altitude Pulmonary Edema, High Altitude Cerebral Edema
- Trial name
- VALLOT 2011 (NCT01565603)
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University Hospital, Grenoble
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
Vasodilation, Vasoconstriction
Sex Differences in Sympathetic Vascular Reactivity at High Altitude
This study aims to investigate sex differences in blood pressure control associated with exposure to acute hypoxia (low oxygen), and short term acclimatization to hypoxia at high altitude.
- Trial name
- NCT05525416
- Testing
- Sodium Nitroprusside, Phenylephrine Hydrochloride, Norepinephrine
- Where
- 2 sites in Canada
- Volunteers
- 17 people, healthy volunteers welcome
- Sponsor
- University of Alberta
Neurocognition
Effect of Supplemental Oxygen Therapy on Neurocognitive Performance in Healthy Highlanders
Exposure to high altitudes, defined as locations above 2500 m, has been shown to cause cognitive alternations due to reduced blood oxygenation (SpO2).
- Trial name
- SPIRIT_1 (NCT07651917)
- Testing
- Supplemental oxygen therapy
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Zurich
Hypobaric Hypoxia
Pharmacological Countermeasures for High Altitude
The aim of this randomized, double-blind study is to determine whether erythropoietin (Procrit) and acetazolamide: 1) mitigates altitude-induced decrements in performance at moderate altitude (3,000 m) and 2) mitigates…
- Trial name
- NCT05300477
- Testing
- Acetazolamide, Erythropoietin
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- United States Army Research Institute of Environmental Medicine
Covid19, SARS-CoV2 Infection
Coronaltitude - Multicentric Evaluation of the Impact on Hypoxia Sensitivity of Patients With COVID-19
In this study, the investigators will examine the extent to which having suffered coronavirus disease 2019 (COVID19) impacts one's sensibility to hypoxia by means of the 'Richalet test'.
- Conditions
- Covid19, SARS-CoV2 Infection, Hypoxia, Altitude
- Trial name
- NCT05167357
- Testing
- COVID19
- Where
- France
- Volunteers
- 68 people, healthy volunteers welcome
- Sponsor
- Institut de Formation et de Recherche en Médecine de Montagne
Sleep Disorder; Breathing-Related
WatchPAT Compared to PSG at 8500'
Subjects who consent to participate in the research will undergo a simultaneous recording of inlab PSG and WatchPAT200 for comparing the WatchPAT data to PSG at an altitude of 8500'.
- Trial name
- NCT04249011
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Itamar-Medical, Israel
Mountain Sickness Acute
Breathing Training to Improve Human Performance at High Altitude
Individuals traveling to altitudes above 8,000 feet may suffer from impaired exercise and cognitive performance, and acute mountain sickness (AMS).
- Trial name
- NCT03530163
- Testing
- Respiratory Muscle Training
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
Hypoxia, Altitude, Exercise Tolerance
Direct and Cross Effects of Adaptation to Systemic Hyperthermia: Impact on Quality of Life, Neurohormonal and Psychophysiological Human Status
Life expectancy and quality of human life are important indicator of the sustainable development of the society. At the same time, the physical, functional, emotional and psychological components of the of the quality of life…
- Conditions
- Hypoxia, Altitude, Exercise Tolerance, Metabolic Disturbance, Quality of Life
- Trial name
- NCT04089410
- Testing
- Hyperthermic Fitness Treatment (HFT), Physical Examination, Assessment of Cardiorespiratory Fitness
- Where
- Russia
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- I.M. Sechenov First Moscow State Medical University