NCT07312227Recruiting
A Prospective Longitudinal Observational Cohort Study of Pregnant Women Residing at High Altitude in Bolivia
Source: ClinicalTrials.gov · Last updated 26 May 2026
Brief summary (registry, in English)
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 residing at sea level, to characterize differences in cardiopulmonary adaptation and nitric oxide (NO) pathway expression at elevations \>3,500 m throughout pregnancy and into the postpartum period. The investigators aim to investigate right-sided cardiac impairment induced by chronic hypobaric hypoxemia, its effects on fetal growth, and the potential contribution of cardiovascular nitric oxide depletion to obstetric complications.
- Status (registry)
- Recruiting
- Study type
- Observational
- Enrollment
- 27 (estimated)
- First submitted
- 3 Dec 2025
- Start date
- 11 Feb 2026
- Primary completion date
- Dec 2026
- Lead sponsor
- Massachusetts General Hospital
- NCT number
- NCT07312227
What you commit to
- Study type: Observational
- Planned participants: 27
- From 11 Feb 2026 to the primary completion date, Dec 2026
- 2 sites in 2 countries
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Other
- preexisting cardiopulmonary pathologies (CHD, COPD, CKD, NYHA \> III)
Who the study is looking for
- women delivering at participating hospitals at more than 3500 meters or women delivering at participating hospitals at sea level
- signed informed consent
Age in the registry: 18 years to 45 years · Sex: Female · Accepts healthy volunteers
Sites (2)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Hospital De La Meujer Coordinator of this site? Confirm its status | La Paz | Bolivia | Completed |
| Massachusetts General Hospital Coordinator of this site? Confirm its status | Boston | United States | Recruiting |
This page is information, not medical advice. Discuss any trial with your doctor.