NASA Working Group Reviews Decompression and Blood Clot Risks for Artemis Missions

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NASA's Office of the Chief Health and Medical Officer established a working group in August 2026 to assess health risks facing astronauts on Artemis lunar missions. The group reviewed data on decompression sickness linked to spacewalk prebreathe procedures, as well as in-flight cases of venous thromboembolism, or blood clots. Researchers also examined the implications of patent foramen ovale, a heart condition, in the context of these risks. The working group's recommendations build on findings from earlier OCHMO-led reviews, integrating previous outcomes into updated guidance for deep-space missions.

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