Changes in Optic Nerve Head and Retinal Morphology During Spaceflight and Acute Fluid Shift Reversal.
Sign Up to like & getrecommendations! Published in 2022 at "JAMA ophthalmology"
DOI: 10.1001/jamaophthalmol.2022.1946
Abstract: Importance Countermeasures that reverse the headward fluid shift experienced in weightlessness have the potential to mitigate spaceflight-associated neuro-ocular syndrome. This study investigated whether use of the countermeasure lower-body negative pressure during spaceflight was associated with… read more here.
Keywords: lower body; optic nerve; body negative; nerve head ... See more keywords
LLower body negative pressure reduces jugular and portal vein volumes, and counteracts the cerebral vein velocity elevation during long-duration spaceflight.
Sign Up to like & getrecommendations! Published in 2021 at "Journal of applied physiology"
DOI: 10.1152/japplphysiol.00231.2021
Abstract: PURPOSE Cephalad fluid shifts in space have been hypothesized to cause the spaceflight-associated neuro-ocular syndrome (SANS) by increasing the intracranial-ocular translaminal pressure gradient. Lower body negative pressure (LBNP) can be used to shift upper-body blood… read more here.
Keywords: vein; body negative; supine; negative pressure ... See more keywords