[Mean ICP, ICP amplitude, mean AP and mean CPP dynamic in changing the position of the head of the bed in patients with severe TBI].
The study included 34 patient with severe TBI (GCS--5.6 +/- 1.2, age--35 +/- 8.2 years). ICP, AP and CPP monitored by Philips MP 4060 with ICM Plus software (UK). Autoregulation of blood flow was evaluated with Prx index. The backrest position was moving in the range 0-30-60-30-0 degrees. Minimal mean ICP was noted in 300 position. ICP in positions 0 degrees and 60 degrees did'nt differ significantly ICP in position 60 degrees was higher then ICP in position 30 degrees. ICP amplitude was raising during changing the position from 0 degrees to 60 degrees and was decreasing during reversing changing. Arterial pressure (AP) was decreasing during movement the head of the bed from 0 degrees to 60 degrees, the maximum of AP was noted in flat position. CPP was increasing during lowering the head of the bed. ICP amplitude and CPP had inverse correlation. ICP amplitude is a simple method of assessment of CPP adequacy during changing the position of the head of the bed in patients with intact autoregulation of cerebral blood flow.
D000328:Adult; D001513:Beds; D001794:Blood Pressure; D001930:Brain Injuries / Q000503:physiopathology*; D002560:Cerebrovascular Circulation / Q000502:physiology*; D003422:Critical Care; D005260:Female; D006706:Homeostasis; D006801:Humans; D007427:Intracranial Pressure / Q000502:physiology*; D008297:Male; D056888:Patient Positioning; D015599:Trauma Severity Indices