Re-evaluation of IIH as the Ideal Terrestrial Analog for Sans: Is There a Better Model to Consider?While astronauts are returning from long duration spaceflight with multiple ocular signs that mimic those seen in terrestrial patients with elevated intracranial pressure (ICP), evidence has yet to prove a clinically significant increase in ICP during space.1 Preliminary research evidence may even suggest that ICP decreases in microgravity. Idiopathic intracranial hypertension (IIH) has long been considered the ideal terrestrial analogue to Spaceflight Associated Neuro-ocular Syndrome (SANS).1 However, there are several critical features of SANS that do not complement any reported case of IIH on Earth. These findings mandate a closer look at the accuracy of IIH as a terrestrial SANS analog.
Document ID
20190000676
Acquisition Source
Johnson Space Center
Document Type
Presentation
Authors
Batliwala, Shehzad (Dean McGee Eye Institute Oklahoma City, OK, United States)
Brunstetter, Tyson J. (NASA Johnson Space Center Houston, TX, United States)
Tarver, William J. (NASA Johnson Space Center Houston, TX, United States)
Clemett, Simon J. (Jacobs Technology, Inc. Houston, TX, United States)
Nelman-Gonzalez, Mayra A. (Wyle Labs., Inc. Houston, TX, United States)
Mason, Sara S. (Wyle Labs., Inc. Houston, TX, United States)
Sams, Clarence F. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
February 12, 2019
Publication Date
January 22, 2018
Subject Category
Aerospace Medicine
Report/Patent Number
JSC-E-DAA-TN51874
Meeting Information
Meeting: NASA Human Research Program Investigators Workshop