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Optic nerve sheath diameter: translating a terrestrial focused technique into a clinical monitoring tool for spaceflight
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Wear, Mary L. Ernst, Randy Foy, Millennia Mason, Sara Van Baalen, Mary Garcia, Kathleen Sargsyan, Ashot Bedi, Deepak |
| Copyright Year | 2015 |
| Description | Ultrasonography is increasingly used to quickly measure optic nerve sheath diameter (ONSD) when increased intracranial pressure (ICP) is suspected. NASA Space and Clinical Operations Division has been using ground and onâorbit ultrasound since 2009 as a proxy for ICP in nonâacute monitoring for space medicine purposes. In the terrestrial emergency room population, an ONSD greater than 0.59 cm is considered highly predictive of elevated intracranial pressure. However, this cutâoff limit is not applicable to the spaceflight setting since over 50% of US Operating Segment (USOS) astronauts have an ONSD greater than 0.60 cm even before launch. Crew Surgeon clinical decisionâmaking is complicated by the fact that many astronauts have history of previous spaceflights. Our data characterize the distribution of baseline ONSD in the astronaut corps, its longitudinal trends in longâduration spaceflight, and the predictive power of this measure related to increased ICP outcomes. |
| File Size | 400948 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150001890 |
| Archival Resource Key | ark:/13960/t5gb73k5w |
| Language | English |
| Publisher Date | 2015-01-13 |
| Access Restriction | Open |
| Subject Keyword | Aerospace Medicine Edema Statistical Analysis Intracranial Pressure Space Flight Long Duration Space Flight Computer Programs Ultrasonics Eye Anatomy Sheaths Statistical Distributions Trend Analysis Biomarkers Astronauts Oculomotor Nerves Prediction Analysis Techniques Graphs Charts Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
