title: The effect of high concentrations of inspired oxygen on middle cerebral artery blood velocity measured by transcranial Doppler.
abstract: The effects of high concentrations of inspired oxygen on cerebrovascular haemodynamics were studied in healthy human volunteers using transcranial Doppler measurements of middle cerebral artery blood velocity. If the end-tidal carbon dioxide level was kept constant, the measured blood velocity and the calculated Pulsatility Index showed no significant change when subjects were breathing 21, 40, 75 or 100% oxygen.
authors.affiliation: Department of Anaesthesia, St George's Hospital Medical School, London.
authors.forename: S A
authors.initials: SA
authors.lastname: Bew
authors.forename: L M
authors.initials: LM
authors.lastname: Field
authors.forename: D W
authors.initials: DW
authors.lastname: Droste
authors.forename: P
authors.initials: P
authors.lastname: Razis
mesh_terms: D000328:Adult; D001783:Blood Flow Velocity; D002536:Cerebral Arteries / Q000000981:diagnostic imaging / Q000502:physiology*; D002560:Cerebrovascular Circulation; D005260:Female; D006801:Humans; D008297:Male; D010100:Oxygen / Q000097:blood / Q000502:physiology*; D012119:Respiration; D017585:Ultrasonography, Doppler, Transcranial
chemical_list: D010100:Oxygen