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Table 2 Total post-operative intracranial air volumes, intracranial pressure at sea level and estimated at final cruising altitude

From: Risk for intracranial pressure increase related to enclosed air in post-craniotomy patients during air ambulance transport: a retrospective cohort study with simulation

  1. Final air volume and final ICP refers to those estimated for cabin altitude 8000 feet in ascending order for amount intracranial air. Shaded areas show where intracranial pressure (ICP) would be expected to increase over 20 mm Hg at cruising altitude (cabin pressure = 8000 ft).Abbreviations: Intracranial (IC), total (tot), volume (vol), calculated (Calc), starting intracranial pressure at sea level 5 mm Hg (ICP5), starting intracranial pressure at sea level 10 mm Hg (ICP10), starting intracranial pressure at sea level 15 mm Hg (ICP15)