BACKGROUND It has been suggested that a moving correlation index between mean arterial blood pressure and intracranial pressure, called PRx, can be used to monitor and quantify cerebral vasomotor reactivity in patients with head injury. OBJECTIVES To validate this index and study its relation with cerebral blood flow velocity and cerebral autoregulation; and to identify variables associated w...

To the Editor:—We read with great interest the article by Petersen et al., which demonstrated the expected clinical response to the three anesthetic agents studied. An increase in arterial pressure may result in an increase in the cerebral perfusion pressure and reduce reflex cerebral vasodilatation, potentially resulting in reduced intracranial pressure. We note that the mean arterial pressure...

Free full text available from www.ijccm.org A b st ra ct Though there is no Class I evidence for the benefit of intracranial pressure (ICP) monitoring, the bulk of the published literature supports its use when indicated. This review deals with the pathophysiology of raised ICP, evidence for and against monitoring, and basic guidelines for monitoring. It is unfortunate that ICP monitoring is no...

• I Hwang, FM Kashif, GC Verghese, T Heldt. A frequency-domain approach to model-based noninvasive intracranial pressure estimation from arterial blood pressure and cerebral blood flow velocity. Invited contribution to the Minisymposium on Information Derived from the Arterial Blood Pressure Waveform and Its Significance. IEEE Engineering in Medicine and Biology Conference, San Diego, CA, Septe...

retrospective and prospective studies looking at the role of cerebrospinal fluid pressure (csfp)/intracranial pressure (icp) have stimulated new theories and hypotheses regarding the underlying causal events for glaucoma. most recently, studies supporting a low csfp/icp as a risk factor for glaucoma have been published. this review summarizes the current understanding of csfp/icp and its potent...

Elevated intracranial intravenous pressure seems to be of importance in pseudotumor cerebri syndromes, either as a cause (secondary intracranial hypertension) or as a consequence (idiopathic intracranial hypertension) of increased intracranial pressure. We present 3 case reports in which diagnostic imaging before and after CSF diversion provided evidence that narrowing of the transverse sinuses...