Breathing carbon dioxide to uncover hidden stroke risks in kids

NCT ID NCT04406818

First seen Jun 25, 2026 · Last updated Jun 26, 2026 · Updated 1 time

Summary

This study looks at how blood flow and metabolism affect brain development in children with sickle cell anemia. Researchers will use MRI scans and a special mask to have participants breathe carbon dioxide, which helps measure how well brain blood vessels expand. The goal is to understand why some children develop silent strokes or slower brain growth, which could lead to better prevention strategies.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Carbon dioxide
What this could lead to
If successful, this could help doctors predict and prevent brain damage or strokes in children with sickle cell anemia.
What could go wrong
This is an observational study, not a treatment trial. It may not lead to direct benefits for participants, and results may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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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.

Contacts and locations

Locations

  • Washington University in St. Louis

    RECRUITING

    St Louis, Missouri, 63110, United States

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Other studies related to the condition(s) this trial covers.