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Like Ropper and colleagues,[21] Lee postulated that this occurred because the brain tissue shifted away from the caudal weightbearing direction in the head-down position. This, in turn, facilitated the outflow of CSF by allowing the CSF previously impeded by a downward compression of swollen brain tissue to flow into the foremen magnum.
"The head-down position that you use to look at phones, iPads and laptops strains the muscles in the neck and the pain can extend all the way down your spine to your lower back," explains chiropractor Tim Hutchful.
Turn the patient into a head-down position (and lateral tilt if surgery will allow) D.
To prevent cephalad sliding of the patient whilst in the lithotomy and head-down position, supports and/or restraints are required.