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Showing 1–4 of 4 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: High Altitude Pulmonary Hypertension Clear all
Recruiting No phase listed Observational Accepts healthy volunteers

A Prospective Longitudinal Observational Cohort Study of Pregnant Women Residing at High Altitude in Bolivia

NCT07312227
View directory record Official record
Conditions
Hypertensive Disorder of Pregnancy, Pulmonary Arterial Hypertension, Intrauterine Growth Restriction
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
27 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 25, 2026 · Synced Jul 22, 2026, 10:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

The Safety Evaluation of Aminophylline and Ambrisentan When Administered Orally Alone and in Combination to Healthy Volunteers

NCT01530464
View directory record Official record
Conditions
High Altitude Pulmonary Hypertension
Interventions
Aminophylline, Ambrisentan, Aminophylline plus ambrisentan
Drug
Lead sponsor
Thies Schroeder
Other
Eligibility
18 Years to 40 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jan 15, 2014 · Synced Jul 22, 2026, 10:22 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Efficacy Study of Riociguat and Its Effects on Exercise Performance and Pulmonary Artery Pressure at High Altitude

NCT02024386
View directory record Official record
Conditions
Hypertension, Pulmonary, Altitude Sickness
Interventions
Riociguat
Drug
Lead sponsor
Richard Moon
Other
Eligibility
18 Years to 40 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 11, 2017 · Synced Jul 22, 2026, 10:22 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Bosentan on Exercise Capacity at High Altitude

NCT00432978
View directory record Official record
Conditions
Altitude, Pulmonary Hypertension
Interventions
Bosentan administration
Drug
Lead sponsor
VA Loma Linda Health Care System
Federal
Eligibility
18 Years to 55 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Apr 17, 2007 · Synced Jul 22, 2026, 10:22 AM EDT