Aviat Space Envir Md
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Aviat Space Envir Md · Aug 2012
Randomized Controlled TrialInfluence of posture on the regulation of cerebral perfusion.
Posture has a major influence on cerebral blood flow (CBF). Unlike head-up tilt (HUT), less is known about how CBF is regulated during head-down tilt (HDT). We hypothesized that CBF would be elevated during HDT and decreased during HUT. ⋯ Despite marked changes in perfusion pressure with HUT or HDT, our findings indicate that cerebral perfusion is well maintained during acute severe changes in posture.