PMC3299143_01
Head CT scan showing small shots in the right Rolando area and PtiO2 and MD catheters (black arrow)
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F1
Computed tomography (CT) scan 2 hours after accident showed more than 30 intraparenchymal small shots localized in the right hemisphere with brain edema and signs of intracranial hypertension (ICHT) [Figure 1].
ICP, CPP, and PtiO2 trends. Note episodes of high ICP around 50mm Hg, with ischemia (PtiO2 <15mm Hg), prior to craniectomy (EVD: External Ventricular Drainage)
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F2
PtiO2 was showing brief ischemic episodes [Figures 2 and 3], due to CPP decreasing and respiratory failure (Pa02 <80 mm Hg).
Lactate/pyruvate ratio and cerebral glucose trends. Note normal LPR around 25 during the hours preceding craniectomy. Prior to craniectomy, glucose values were decreased below 0.8mmol/l, which indicates ongoing ischemia (correlation with PtiO2)
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F3
PtiO2 was showing brief ischemic episodes [Figures 2 and 3], due to CPP decreasing and respiratory failure (Pa02 <80 mm Hg).
PMC3299143_02