BACKGROUND Monitoring of intracranial pressure (ICP) is a cornerstone in the surveillance of neurosurgical patients. The ICP is measured against a baseline pressure (i.e. zero - or reference pressure). We have previously reported that baseline pressure errors (BPEs), manifested as spontaneous shift or drifts in baseline pressure, cause erroneous readings of mean ICP in individual patients. The ...

BACKGROUND Intracranial hypertension, defined as an intracranial pressure (ICP) >20 mmHg for a period of more than 5 min, worsens neurologic outcome in traumatic brain injury (TBI). While several mechanisms contribute to poor outcome, impaired cerebral perfusion appears to be a highly significant common denominator. Management guidelines from the Brain Trauma Foundation recommend measuring ICP ...

Our understanding of what if any role intracranial pressure (ICP) plays in the manifestation of the optic neuropathy called glaucoma is only beginning to develop. ICP can have a profound effect on the optic nerve. Edema of the optic nerve head is of course an accepted consequence of elevations in ICP. Venous pulsations are seen in some individuals with normal or low ICP. Therefore some local al...

OBJECTIVES To examine changes in cerebrovascular pressure transmission derived from arterial blood pressure (ABP) and intracranial pressure (ICP) recordings by autoregressive moving average modeling technique. METHODS Digitized ICP and ABP recordings were obtained from patients with brain injury. Two groups were defined: Group A with 4 patients who demonstrated plateau waves, and Group B with...

Intracranial pressure (ICP) is derived from cerebral blood and cerebrospinal fluid (CSF) circulatory dynamics and can be affected in the course of many diseases of the central nervous system. Monitoring of ICP requires an invasive transducer, although some attempts have been made to measure it non-invasively. Because of its dynamic nature, instant CSF pressure measurement using the height of a ...

BACKGROUND The validity of the clinical dictum "the presence of spontaneous retinal venous pulsation (SVP) excludes raised intracranial pressure" has not been previously tested. We set out to determine the specificity and positive predictive value (PPV) of the presence of SVP to indicate normal intracranial pressure (ICP) in a routine clinical setting. METHODS We prospectively recruited patie...

Background: The aim of the present study was to explore clinical effect and predict prognosis severe craniocerebral injury patients with decompressive craniectomy by combining transcranial Doppler (TCD) invasive intracranial pressure (ICP).

BACKGROUND Intracranial pressure (ICP) monitoring is a cornerstone of care for severe traumatic brain injury (TBI). Management of ICP can help ensure adequate cerebral blood flow and oxygenation. However, studies indicate that brain hypoxia may occur despite normal ICP and the relationship between ICP and brain oxygenation is poorly defined. This is particularly important for children in whom l...

Increased intracranial pressure (ICP) is a medical emergency requiring immediate therapy which often includes airway control and endotracheal intubation. Given the need to prevent further increases in ICP, sedation and neuromuscular blockade is frequently used to facilitate endotracheal intubation. However, concerns regarding the ease of endotracheal intubation may complicate the decision proce...

Intracranial Pressure Gradients Caused by Experimental Cerebral Ischemia and Edema • To assess the development and resolution of ischemic cerebral edema and brain swelling, measurements of intracranial pressure (ICP) were made in cats after the transorbital occlusion of one middle cerebral artery. Measurement of ICP gradients was difficult: epidural, subdural and intraventricular catheters caus...