[Skip to Content]
[Skip to Content Landing]
Views 188
Citations 0
Invited Commentary
March 26, 2020

Sinus Space in Outer Space

Author Affiliations
  • 1Human Research Program, National Aeronautics and Space Administration
  • 2KBR, Johnson Space Center, Cardiovascular and Vision Laboratory, National Aeronautics and Space Administration
JAMA Otolaryngol Head Neck Surg. Published online March 26, 2020. doi:10.1001/jamaoto.2020.0274

It is an exciting time in human spaceflight, with the advent of commercial spaceflight and the new Artemis Program to return astronauts to the moon. Although it has been 50 years since the Apollo 11 moon landing and 20 years since humans began continuously residing on the International Space Station (ISS), researchers continue to make novel discoveries regarding the human body in space. In this issue of JAMA Otolaryngology–Head & Neck Surgery, Inglesby et al1 report on magnetic resonance imaging opacification of the paranasal sinus and mastoid air cells after Space Shuttle and ISS missions. As with many spaceflight-related findings, the magnitude of change is greater after longer-duration ISS missions (approximately 6 months) than Space Shuttle missions (approximately 2 weeks). No differences were found in the paranasal sinuses, but long-duration spaceflight was associated with an increased odds ratio of developing mastoid effusions by 9.28 compared with short-duration spaceflight. The authors hypothesize that this may be because of eustachian tube dysfunction or venous sinus pathology. While astronauts frequently report a subjective sensation of nasal and sinus congestion, there are only a handful of documented cases of sinusitis or otitis media in space,2 making venous congestion secondary to microgravity-induced headward fluid shifts the likely culprit.3

Limit 200 characters
Limit 25 characters
Conflicts of Interest Disclosure

Identify all potential conflicts of interest that might be relevant to your comment.

Conflicts of interest comprise financial interests, activities, and relationships within the past 3 years including but not limited to employment, affiliation, grants or funding, consultancies, honoraria or payment, speaker's bureaus, stock ownership or options, expert testimony, royalties, donation of medical equipment, or patents planned, pending, or issued.

Err on the side of full disclosure.

If you have no conflicts of interest, check "No potential conflicts of interest" in the box below. The information will be posted with your response.

Not all submitted comments are published. Please see our commenting policy for details.

Limit 140 characters
Limit 3600 characters or approximately 600 words
    ×