Intracranial Pressure Monitor: Bolt

Traumatic aneurysm resulting from insertion of an intracranial pressure monitor

Journal of Neurosurgery ◽

10.3171/jns.2001.95.4.0720 ◽

2001 ◽

Vol 95 (4) ◽

pp. 720 ◽

Cited By ~ 11

Author(s):

Hoang Le ◽

Ilyas Munshi ◽

R. Loch Macdonald ◽

Robert Wollmann ◽

Jeffrey Frank

Keyword(s):

Intracranial Pressure ◽

Traumatic Aneurysm ◽

Pressure Monitor

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Regional brain tissue pressure gradients created by expanding extradural temporal mass lesion

Journal of Neurosurgery ◽

10.3171/jns.1997.86.3.0505 ◽

1997 ◽

Vol 86 (3) ◽

pp. 505-510 ◽

Cited By ~ 34

Author(s):

Christopher E. Wolfla ◽

Thomas G. Luerssen ◽

Robin M. Bowman

Keyword(s):

Intracranial Pressure ◽

Frontal Lobe ◽

Brain Tissue ◽

Temporal Lobe ◽

Mass Lesion ◽

Pressure Monitor ◽

Tissue Pressure ◽

Content Type ◽

Regional Brain ◽

The Right

✓ A porcine model of regional intracranial pressure was used to compare regional brain tissue pressure (RBTP) changes during expansion of an extradural temporal mass lesion. Measurements of RBTP were obtained by placing fiberoptic intraparenchymal pressure monitors in the right and left frontal lobes (RF and LF), right and left temporal lobes (RT and LT), midbrain (MB), and cerebellum (CB). During expansion of the right temporal mass, significant RBTP gradients developed in a reproducible pattern: RT > LF = LT > RF > MB > CB. These gradients appeared early, widened as the volume of the mass increased, and persisted for the entire duration of the experiment. The study indicates that RBTP gradients develop in the presence of an extradural temporal mass lesion. The highest RBTP was recorded in the ipsilateral temporal lobe, whereas the next highest was recorded in the contralateral frontal lobe. The RBTP that was measured in either frontal lobe underestimated the temporal RBTP. These results indicated that if a frontal intraparenchymal pressure monitor is used in a patient with temporal lobe pathology, the monitor should be placed on the contralateral side and a lower threshold for therapy of increased intracranial pressure should be adopted. Furthermore, this study provides further evidence that reliance on a single frontal intraparenchymal pressure monitor may not detect all areas of elevated RBTP.

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582: THE IMPACT OF INTRACRANIAL PRESSURE MONITOR USE ON OUTCOMES IN CHILDREN WITH HEPATIC ENCEPHALOPATHY

Critical Care Medicine ◽

10.1097/01.ccm.0000509260.94851.92 ◽

2016 ◽

Vol 44 (12) ◽

pp. 222-222

Author(s):

Israel Temple ◽

Ali Zarrinpar ◽

Robert Venick ◽

Myke Federman

Keyword(s):

Hepatic Encephalopathy ◽

Intracranial Pressure ◽

Pressure Monitor ◽

The Impact

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The Fontogram: A Noninvasive Intracranial Pressure Monitor

PEDIATRICS ◽

10.1542/peds.60.5.721 ◽

1977 ◽

Vol 60 (5) ◽

pp. 721-725

Author(s):

James H. Salmon ◽

Waleed Hajjar ◽

Henrietta S. Bada

Keyword(s):

Intracranial Pressure ◽

Correlation Coefficient ◽

Newborn Infants ◽

Pressure Monitor ◽

Direct Measurements ◽

Mean Pressure ◽

The Mean ◽

Increased Icp ◽

Clinical Cases

The applanation transducer was used to measure intracranial pressure (ICP) through the intact fontanel. The method is painless, rapid, and accurate. The pressures recorded with this fontogram were correlated with direct measurements of ICP. The correlation coefficient of the 21 paired determinations was .98—a very good correlation. Fontanel pressure was determined in 35 normal newborn infants. The mean pressure was 7.37 mm Hg with an SD of ± 1.45 (range, 3.5 to 9.5 mm Hg). Three clinical cases are presented to illustrate the usefulness of this apparatus in the detection of increased ICP and in monitoring the effectiveness of treatment.

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Intracranial Pressure Waveform Morphology and Intracranial Adaptive Capacity

American Journal of Critical Care ◽

10.4037/ajcc2008.17.6.545 ◽

2008 ◽

Vol 17 (6) ◽

pp. 545-554 ◽

Cited By ~ 24

Author(s):

Jun-Yu Fan ◽

Catherine Kirkness ◽

Paolo Vicini ◽

Robert Burr ◽

Pamela Mitchell

Keyword(s):

Traumatic Brain Injury ◽

Brain Injury ◽

Intracranial Pressure ◽

Adaptive Capacity ◽

Severe Traumatic Brain Injury ◽

Controlled Trial ◽

Pressure Monitor ◽

Data Set ◽

Prime Concern ◽

Intracranial Pressure Waveform

Background Intracranial hypertension due to primary and secondary injuries is a prime concern when providing care to patients with severe traumatic brain injury. Increases in intracranial pressure vary depending on compensatory processes within the craniospinal space, also referred to as intracranial adaptive capacity. In patients with traumatic brain injury and decreased intracranial adaptive capacity, intracranial pressure increases disproportionately in response to a variety of stimuli. However, no well-validated measures are available in clinical practice to predict the development of such an increase. Objectives To examine whether P2 elevation, quantified by determining the P2:P1 ratio (=0.8) of the intracranial pressure pulse waveform, is a unique predictor of disproportionate increases in intracranial pressure on a beat-by-beat basis in the 30 minutes preceding the elevation in patients with severe traumatic brain injury, within 48 hours after deployment of an intracranial pressure monitor. Methods A total of 38 patients with severe traumatic brain injury were sampled from a randomized controlled trial of cerebral perfusion pressure management in patients with traumatic brain injury or subarachnoid hemorrhage. Results The P2 elevation was not only present before the disproportionate increase in pressure, but also appeared in the comparison data set (within-subject without such a pressure increase). Conclusions P2 elevation is not a reliable clinical indicator to predict an impending disproportionate increase in intracranial pressure.

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