Fact CheckerSign in

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

Full criteria on ClinicalTrials.gov

Sites (2)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Hospital De La Meujer
Coordinator of this site? Confirm its status
La PazBoliviaCompleted
Massachusetts General Hospital
Coordinator of this site? Confirm its status
BostonUnited StatesRecruiting

This page is information, not medical advice. Discuss any trial with your doctor.