Jump to content
Join the Alien Search, login or register FREE on Aliens and Space Forum
Members Can Post Anonymously On This Site

Risk of Reduced Crew Health and Performance Due to Hypoxia

NASA

By NASA
in NASA

 Share

Recommended Posts

  • Publishers
NASA Mentor

NASA

Posted
  • Publishers
Posted

1 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

astronauts go through a "pre-breathing" period before eva
Astronauts Michael R. (Rich) Clifford and Linda M. Godwin, the assigned space-walking mission specialists for STS-76, go through a “pre-breathing” period on the Space Shuttle Atlantis’ middeck. This practice is normal procedure for space-walkers in preparation for their Extravehicular Activity (EVA) and the wearing of their Extravehicular Mobility Units (EMU). The photograph was taken with a 35mm camera by one of the crew members.

Human exploration missions will require robust, flexible Extravehicular Activity (EVA) architecture protocols that include the use of a reduced-pressure cabin atmosphere enabling staged denitrogenation. Use of this atmosphere could result in compromised health and performance to the crewmember due to exposure to mild hypobaric hypoxia; of most concern are the potential effects on the increased intracranial pressure, visual impairment, cognitive performance, sensorimotor dysfunction, oxidative damage, and sleep quality. In addition to hypobaric hypoxia associated with staged denitrogenation, there are additional factors that can result in hypoxic exposure to the crewmember, such as cabin depressurization, Environmental Control, and Life Support System (ECLSS) failure, toxic exposure, or crewmember illness/injury.

astronauts test a Personal Cabin Pressure Altitude Monitor
Jan Zysko (left) and Rich Mizell (right) test a Personal Cabin Pressure Altitude Monitor in an altitude chamber at Tyndall Air Force Base in Florida. Zysko invented the pager-sized monitor that alerts wearers of a potentially dangerous or deteriorating cabin pressure altitude condition, which can lead to life-threatening hypoxia. Zysko is chief of the KSC Spaceport Engineering and Technology directorate’s data and electronic systems branch. Mizell is a Shuttle processing engineer. The monitor, which has drawn the interest of such organizations as the Federal Aviation Administration for use in commercial airliners and private aircraft, was originally designed to offer Space Shuttle and Space Station crew members added independent notification about any depressurization
NASA

Directed Acyclic Graph Files

+ DAG File Information (HSRB Home Page)

+ Hypoxia Risk DAG and Narrative (PDF)

+ Hypoxia Risk DAG Code (TXT)

Human Research Program

+ Risk of Reduced Crew Health and Performance Due to Hypoxia

+ 2015 November Evidence Report (MSWord)

Human System Risks

Share

Details

Last Updated
Mar 11, 2025
Editor
Robert E. Lewis
Location
Johnson Space Center

Related Terms

Explore More

renal-stone-formation.jpeg?w=300
1 min read

Risk of Renal Stone Formation

Article 16 mins ago
aerobic-capacity-1.jpeg?w=300
1 min read

Risk of Reduced Physical Performance Capabilities Due to Reduced Aerobic Capacity (Aerobic Risk)

Article 17 mins ago
sans-risk-0.jpeg?w=300
1 min read

Risk of Spaceflight Associated Neuro-ocular Syndrome

Article 16 mins ago

View the full article

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing

  • Similar Topics

    • NASA
      NASA’s SpaceX Crew-9 Members Pose for Portrait
      By NASA
      NASA/Nick Hague NASA astronauts Butch Wilmore, Nick Hague, and Suni Williams, and Roscosmos cosmonaut Aleksandr Gorbunov – the members of NASA’s SpaceX Crew-9 mission – smile at the camera in this Feb. 19, 2025, photo. While aboard the International Space Station, Hague, Williams, and Wilmore completed more than 900 hours of research between more than 150 unique scientific experiments and technology demonstrations during their stay aboard the orbiting laboratory.
      Wilmore, Hague, Williams, and Gorbunov are set to return to Earth on Tuesday, March 18, with splashdown set for approximately 5:57 p.m. EDT.
      Watch NASA’s Crew-9 return coverage at 4:45 p.m. EDT Tuesday on NASA+.
      Image credit: NASA/Nick Hague
      View the full article
    • NASA
      NASA’s SpaceX Crew-9 Re-Entry and Splashdown
      By NASA
      NASA’s SpaceX Crew-9 Re-Entry and Splashdown
    • NASA
      NASA’s SpaceX Crew-9 Undocking
      By NASA
      NASA’s SpaceX Crew-9 Undocking
    • NASA
      NASA's Space X Crew-9 Hatch Close
      By NASA
      NASA's Space X Crew-9 Hatch Close
    • NASA
      NASA’s SpaceX Crew-10 Launch
      By NASA
      A SpaceX Falcon 9 rocket carrying the company’s Dragon spacecraft is launched on NASA’s SpaceX Crew-10 mission to the International Space Station with NASA astronauts Anne McClain and Nichole Ayers, JAXA (Japan Aerospace Exploration Agency) astronaut Takuya Onishi, and Roscosmos cosmonaut Kirill Peskov onboard, Friday, March 14, 2025, from NASA’s Kennedy Space Center in Florida. NASA’s SpaceX Crew-10 mission is the tenth crew rotation mission of the SpaceX Dragon spacecraft and Falcon 9 rocket to the International Space Station as part of the agency’s Commercial Crew Program. McClain, Ayers, Onishi, and Peskov launched at 7:03 p.m. EDT from Launch Complex 39A at NASA Kennedy to begin a six-month mission aboard the orbital outpost.
      Image Credit: NASA/Aubrey Gemignani
      View the full article

  • Check out these Videos

×
×
  • Create New...