2021
DOI: 10.1096/fasebj.2021.35.s1.04421
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Cerebral Blood Flow Pulsatility Index is Unchanged during Superimposed Lower‐Body Negative Pressure in Head‐Up Tilt in Anterior and Posterior Cerebral Circulations

Abstract: Lower body negative pressure (LBNP) chambers can be utilized to experimentally‐elicit reductions in blood pressure, cerebral blood flow (CBF) and associated symptoms of presyncope. There is high between‐individual variability in tolerance to LBNP, however the underlying physiological responses affecting tolerance remains unclear. Pulsatility in CBF may affect LBNP tolerance, as more pulsatile flow may protect the delivery of oxygen to cerebral tissues in hypotension. We aimed to assess the pulsatility index (P… Show more

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