Abstract
Elevated intracranial pressure (ICP) or inadequate cerebral perfusion pressure (CPP) and cerebral blood flow (CBF) are common causes of secondary brain damage in head-injured patients. In patients with elevated ICP it is a common practice to position the patient in bed with the head elevated above the heart. Kenning et al. reported that elevating the head to 45° or 90° significantly reduced ICP [1]. However, some studies suggest that head elevation may also lower the CPP. Rosner et al. have emphasized the importance of adequate CPP and have provided physiological and clinical evidence suggesting that CPP is maximal with patients in the horizontal position, even though ICP is usually higher in this position [6–9]. As the maintenance of adequate CBF is the primary rationale for maintaining adequate CPP in patients with increased ICP, we have studied the changes in CBF, as well as changes in ICP, CPP and other cerebral and systemic physiologic parameters induced by changes in head position in patients with head injury.
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© 1993 Springer-Verlag Berlin Heidelberg
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Feldman, Z. et al. (1993). Changes in Cerebral Hemodynamics with Head Elevation in Head-Injured Patients. In: Avezaat, C.J.J., van Eijndhoven, J.H.M., Maas, A.I.R., Tans, J.T.J. (eds) Intracranial Pressure VIII. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-77789-9_92
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DOI: https://doi.org/10.1007/978-3-642-77789-9_92
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