title: Transcranial Doppler ultrasonography (TCD) in ventilated head injured patients: correlation with stable xenon-enhanced CT.
abstract: Disturbance of cerebral vasomotor regulation has been shown to be associated with the severity of traumatic brain injury (TBI). The transient hyperaemic response (THR) test is a test of the pressure autoregulatory response in terms of cerebral blood flow velocity after a brief carotid artery compression. Correlating with the test of cerebral vascular reactivity (CVR) to carbon dioxide by means of passive hyperventilation suggested that the THR test is a simple clinical test for the assessment of cerebral haemodynamic status in head-injured patients.
authors.affiliation: Division of Neurosurgery, Department of Surgery, Prince of Wales Hospital, Chinese University of Hong Kong, Hong Kong.
authors.forename: S C
authors.initials: SC
authors.lastname: Ng
authors.forename: W S
authors.initials: WS
authors.lastname: Poon
authors.forename: M T
authors.initials: MT
authors.lastname: Chan
authors.forename: J M
authors.initials: JM
authors.lastname: Lam
authors.forename: W
authors.initials: W
authors.lastname: Lam
authors.forename: C
authors.initials: C
authors.lastname: Metreweli
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001921:Brain / Q000098:blood supply*; D001929:Brain Edema / Q000175:diagnosis* / Q000503:physiopathology; D001930:Brain Injuries / Q000175:diagnosis* / Q000503:physiopathology; D002648:Child; D002675:Child, Preschool; D005260:Female; D006706:Homeostasis / Q000502:physiology; D006801:Humans; D006940:Hyperemia / Q000175:diagnosis / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012039:Regional Blood Flow / Q000502:physiology; D012121:Respiration, Artificial; D014057:Tomography, X-Ray Computed; D017585:Ultrasonography, Doppler, Transcranial; D014655:Vascular Resistance / Q000502:physiology