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Decerebrate rigidity, intracranial pressure and vegetative signs were studied in 25 patients. Advanced statistical techniques were used to analyse the interrelationships between muscle activity (IEMG), blood pressure (ABP), intracranial pressure (ICP), pulse rate (HR), respiratory rate (RR), and central venous pressure (CVP) occurring during paroxysms of decerebration. The pattern of reaction is influenced by compression or stress imposed on the brain stem at the tentorial incisure and is related to the degree of cisternal obstruction. Significant differences in reaction were disclosed between provoked and spontaneous decerebration posturing.

The use of collagen matrix to cover the dural defect during hemicraniectomy reduces operating time in hemicraniectomy and cranioplasty. The complication rate (cerebrospinal fluid effusion), total treatment time, and time on intensive care unit can be reduced, giving a potential for cost reduction. There was no difference in the rehabilitative outcome.

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