Bolivia study to uncover hidden risks of High-Altitude pregnancy
NCT ID NCT07312227
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study follows 27 pregnant women living at high altitude in Bolivia and compares them to women at sea level. Researchers will use heart ultrasounds and blood tests to see how the body adapts to low oxygen levels during pregnancy. The goal is to better understand why some women develop high blood pressure or have babies with poor growth at high altitudes.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could help doctors better understand and manage pregnancy complications at high altitude.
- What could go wrong
- This is a small observational study with only 27 participants, so findings may not apply broadly and no treatment is being tested.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 27 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Feb 2026
- Expected to finish
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Feb 2027
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
The cohort of healthy pregnant women residing at high altitude will selected from pregnant women who have lived at an altitude greater than 3500 meters throughout pregnancy and at delivery. The control group will be pregnant women who have lived at sea level throughout pregnancy and at delivery.
- Ages
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18 to 45 years
- Sex
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Female participants only
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * women delivering at participating hospitals at more than 3500 meters or women delivering at participating hospitals at sea level * signed informed consent Exclusion Criteria: * preexisting cardiopulmonary pathologies (CHD, COPD, CKD, NYHA \> III)
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Hospital De La Meujer
COMPLETEDLa Paz, Bolivia
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Massachusetts General Hospital
RECRUITINGBoston, Massachusetts, 02114, United States
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