Effects of −10° and −30° head-down tilt on cerebral blood velocity, dynamic cerebral autoregulation, and noninvasively estimated intracranial pressure
Tomokazu Kato, Takuya Kurazumi, Toru Konishi, Chiharu Takko, Yojiro Ogawa, Ken‐ichi Iwasaki
Abstract
This appears to be the first study to evaluate steady-state cerebral blood flow (CBF), dynamic cerebral autoregulation, and intracranial pressure (ICP) during -30° head-down tilt (HDT) compared with those during -10° HDT using noninvasive measurements. The results suggest that steady-state CBF and dynamic cerebral autoregulation are preserved despite the higher ICP during short-term -30° HDT compared with -10° HDT.
Topics & Concepts
Cerebral autoregulationIntracranial pressureAutoregulationCerebral blood flowMiddle cerebral arteryTranscranial DopplerMedicineHead-Down TiltCerebral circulationBlood pressureHemodynamicsCerebral perfusion pressureAnesthesiaCardiologyInternal medicineIschemiaTraumatic Brain Injury and Neurovascular DisturbancesOptical Imaging and Spectroscopy TechniquesRadiation Dose and Imaging