Lung blood vessel resistance after returning to high altitude in healthy residents
Studies healthy adults living at high altitude who go down to sea level and return.
Plain-language title generated from the registry record
Registry title: Assessment of Total Pulmonary Resistance sPAP/CO Between Sea Level LA vs. High Altitude HA After Re-ascent in Healthy Individuals
Key facts
- Where
- Zurich, SwitzerlandSee the site
Could this be for you?
Answer for yourself. This is not a decision: only the study team can say whether you can take part.
- Are you between 18 and 80 years old?
Source: NCT07804589, who can take part
Where in Switzerland
- University Hospital of ZurichZurich, SwitzerlandNo longer taking part
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Silvia Ulrich Somaini
- Trial code
- NCT07804589
- Record updated
- 4 September 2026
- Original description
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 pulmonary resistance (sPAP/CO) and other hemodynamic outcomes in healthy individuals, who live permanently >2600m.Read full original descriptionShow less
Effect of a One-week Descent From 2850m to Sea Level and Re-ascent in Patients With Pulmonary Arterial Hypertension and Healthy Controls Permanently Living > 2600m on Pulmonary Hemodynamics, Exercise Capacity, Blood Oxygenation, Sleep Disordered Breathing and Further Outcomes
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 pulmonary resistance (sPAP/CO) and other hemodynamic outcomes in healthy individuals, who live permanently >2600m.
Inclusion: Adults aged 18-80 years and of all genders; Permanent residence > 2600 m; healthy: no self-perceived cardiopulmonary disease limiting daily activities; written informed consent to participate in the study.
Exclusion: any self-perceived cardiopulmonary disease limiting daily activities; Age <18 years or >80 years; Participants who cannot follow the study investigations; Participants permanently living < 2600m; Participants who traveled and stayed overnight at altitudes <2000 m in the past 4 weeks.