• Crit Care Resusc · Mar 2012

    Randomized Controlled Trial

    Increased brain tissue oxygen tension in children with traumatic brain injury using temperature-corrected guided ventilation during prophylactic hypothermia.

    • Andreas Schibler and Susan Humphreys.
    • Mater Children's Hospital, Brisbane, QLD, Australia. andreas.schibler@mater.org.au
    • Crit Care Resusc. 2012 Mar 1;14(1):20-4.

    ObjectiveTo investigate whether ventilatory management using a temperature-corrected (pH-stat) or uncorrected (alpha-stat) blood gas analysis strategy improves brain tissue oxygen tension (PbrO(2)) in children prophylactically treated with moderate hypothermia for traumatic brain injury.Design, Setting And ParticipantsDouble crossover study conducted in the intensive care unit of a tertiary children's hospital. Nine children aged 3-14 years with severe traumatic brain injury were randomly allocated twice to a 6-hour period of either alpha- or pH-stat management while being kept hypothermic at 32.5°C.Main Outcome MeasuresPbrO(2), intracranial pressure (ICP) and PbrO(2)/PaO(2).ResultsPbrO(2) was significantly higher during pH-stat management (alpha-stat, 23.2mmHg [95% CI, 22.4- 24.0mmHg] v pH-stat, 28.7mmHg [95% CI, 27.9- 29.5mmHg]; P < 0.001). PbrO(2)/PaO(2) was significantly higher during pH-stat (alpha-stat, 0.190 [95% CI, 0.187- 0.193] v pH-stat, 0.251 [95% CI, 0.246-0.259]; P < 0.05). ICP was non-significantly higher during pH-stat (alpha-stat, 8.8mmHg [95% CI, 8.1-9.5mmHg] v ph-stat,10.2mmHg [95% CI, 9.6-10.8]).ConclusionPbrO(2) may be improved using a pH-stat blood gas management strategy in prophylactic hypothermia for paediatric patients with traumatic brain injury without any clinically relevant increase in ICP.

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