scholarly journals Intracranial pressure monitoring

2015 ◽  
Vol 02 (03) ◽  
pp. 193-203 ◽  
Author(s):  
Mary Abraham ◽  
Vasudha Singhal
Keyword(s):  
Intracranial Pressure ◽  
Cost Effective ◽  
Optic Nerve Sheath Diameter ◽  
Icp Monitoring ◽  
Non Invasive ◽  
Injured Brain ◽  
Neurological Patients ◽  
Catheter Tip ◽  
Long Term Prognosis ◽  
Invasive Techniques

AbstractBrain specific monitoring enables detection and prevention of secondary cerebral insults, especially in the injured brain, thereby preventing permanent neurological damage. Intracranial pressure (ICP) monitoring is widely used in various neurological, neurosurgical and even medical conditions, both intraoperatively and in critical care, to improve patient outcome. It is especially useful in patients with traumatic brain injury, as a robust predictor of cerebral perfusion, and can help to guide therapy and assess long-term prognosis. Intraventricular catheters remain the gold standard for ICP monitoring, as they are the most reliable, accurate and cost-effective, and allow therapeutic cerebrospinal fluid drainage. Newer fibreoptic catheter tip and microchip transducer techniques have revolutionised ICP monitoring, with their ease of insertion in patients with narrow ventricles, and reduced risk of infection and haemorrhage. Furthermore, non-invasive methods of ICP monitoring, such as transcranial Doppler, optic nerve sheath diameter, etc., have emerged as promising techniques for screening patients with raised ICP in settings where invasive techniques are either not feasible (patients with severe coagulopathy) or not available (setups without access to a neurosurgeon). Therefore, ICP monitoring, as a part of multi-modality neuromonitoring, is a useful tool in the armamentarium of the neuro-intensivist in decreasing morbidity and mortality of critically ill neurological patients.

Review of non-invasive intracranial pressure measurement techniques for ophthalmology applications

2019 ◽  
Vol 104 (7) ◽  
pp. 887-892
Author(s):  
David Andrew Price ◽  
Andrzej Grzybowski ◽  
Jennifer Eikenberry ◽  
Ingrida Januleviciene ◽  
Alice Chandra Verticchio Vercellin ◽  
...  
Keyword(s):  
Intracranial Pressure ◽  
Measurement Techniques ◽  
Optic Nerve Sheath Diameter ◽  
Transcranial Ultrasound ◽  
Invasive Technique ◽  
Non Invasive ◽  
Nerve Sheath ◽  
Assessment And Monitoring ◽  
Invasive Techniques ◽  
The Relationship

Assessment and monitoring of intracranial pressure (ICP) are important in the management of traumatic brain injury and other cerebral pathologies. In the eye, ICP elevation and depression both correlate with optic neuropathies, the former because of papilledema and the latter related to glaucoma. While the relationship between ICP elevation and papilledema is well established, the relationship between low ICP and glaucoma is still poorly understood. So far, ICP monitoring is performed invasively, but this entails risks including infection, spurring the study of non-invasive alternatives. We review 11 methods of non-invasive estimation of ICP including correlation to optic nerve sheath diameter, intraocular pressure, ophthalmodynamometry and two-depth transcranial Doppler of the ophthalmic artery. While none of these methods can fully replace invasive techniques, certain measures show great potential for specific applications. Although only used in small studies to date, a MRI based method known as MR-ICP, appears to be the best non-invasive technique for estimating ICP, with two-depth transcranial ultrasound and ophthalmodynamometry showing potential as well.

scholarly journals Intracranial Pressure Monitoring: Invasive versus Non-Invasive Methods—A Review

2012 ◽  
Vol 2012 ◽  
pp. 1-14 ◽  
Author(s):  
P. H. Raboel ◽  
J. Bartek ◽  
M. Andresen ◽  
B. M. Bellander ◽  
B. Romner
Keyword(s):  
Intracranial Pressure ◽  
Optic Nerve Sheath Diameter ◽  
Pressure Monitoring ◽  
Advantages And Disadvantages ◽  
Non Invasive ◽  
Nerve Sheath ◽  
A Minor ◽  
Invasive Techniques ◽  
Membrane Displacement ◽  
Invasive Measurement

Monitoring of intracranial pressure (ICP) has been used for decades in the fields of neurosurgery and neurology. There are multiple techniques: invasive as well as noninvasive. This paper aims to provide an overview of the advantages and disadvantages of the most common and well-known methods as well as assess whether noninvasive techniques (transcranial Doppler, tympanic membrane displacement, optic nerve sheath diameter, CT scan/MRI and fundoscopy) can be used as reliable alternatives to the invasive techniques (ventriculostomy and microtransducers). Ventriculostomy is considered the gold standard in terms of accurate measurement of pressure, although microtransducers generally are just as accurate. Both invasive techniques are associated with a minor risk of complications such as hemorrhage and infection. Furthermore, zero drift is a problem with selected microtransducers. The non-invasive techniques are without the invasive methods' risk of complication, but fail to measure ICP accurately enough to be used as routine alternatives to invasive measurement. We conclude that invasive measurement is currently the only option for accurate measurement of ICP.

scholarly journals Clinical review of non-invasive intracranial pressure measurement in medical cases

2016 ◽  
Vol 03 (01) ◽  
pp. 009-014 ◽  
Author(s):  
Shalini Nair
Keyword(s):  
Decision Making ◽  
Intracranial Pressure ◽  
Gold Standard ◽  
Surgical Intervention ◽  
Vital Role ◽  
Icp Monitoring ◽  
Neurological Emergencies ◽  
Non Invasive ◽  
Nerve Sheath ◽  
Invasive Techniques

AbstractIntracranial pressure (ICP) measurement plays a vital role in decision making in neurological emergencies. Invasive methods of ICP monitoring have been the gold standard. Advent of various non-invasive techniques has widened the option of ICP measurement in medical cases as well. We illustrate two cases where optic nerve sheath measurements helped in managing raised ICP and time the need for surgical intervention and review the literature on non-invasive ICP measurement.

scholarly journals Human ophthalmic artery as a sensor for non-invasive intracranial pressure monitoring: numerical modeling and in vivo pilot study

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Paulius Lucinskas ◽  
Mantas Deimantavicius ◽  
Laimonas Bartusis ◽  
Rolandas Zakelis ◽  
Edgaras Misiulis ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Clinical Study ◽  
Intracranial Pressure ◽  
Pressure Sensor ◽  
Ophthalmic Artery ◽  
Open Angle Glaucoma ◽  
Icp Monitoring ◽  
Paired Data ◽  
Non Invasive ◽  
Data Points

AbstractIntracranial pressure (ICP) monitoring is important in managing neurosurgical, neurological, and ophthalmological patients with open-angle glaucoma. Non-invasive two-depth transcranial Doppler (TCD) technique is used in a novel method for ICP snapshot measurement that has been previously investigated prospectively, and the results showed clinically acceptable accuracy and precision. The aim of this study was to investigate possibility of using the ophthalmic artery (OA) as a pressure sensor for continuous ICP monitoring. First, numerical modeling was done to investigate the possibility, and then a pilot clinical study was conducted to compare two-depth TCD-based non-invasive ICP monitoring data with readings from an invasive Codman ICP microsensor from patients with severe traumatic brain injury. The numerical modeling showed that the systematic error of non-invasive ICP monitoring was < 1.0 mmHg after eliminating the intraorbital and blood pressure gradient. In a clinical study, a total of 1928 paired data points were collected, and the extreme data points of measured differences between invasive and non-invasive ICP were − 3.94 and 4.68 mmHg (95% CI − 2.55 to 2.72). The total mean and SD were 0.086 ± 1.34 mmHg, and the correlation coefficient was 0.94. The results show that the OA can be used as a linear natural pressure sensor and that it could potentially be possible to monitor the ICP for up to 1 h without recalibration.

scholarly journals Optic Nerve Sheath Diameter Assessment Used As a Non-Invasive Tool To Dynamically Monitor Intracranial Pressure

2021 ◽  
Author(s):  
Guo-Biao Wu ◽  
Jun Tian ◽  
Xiao-Bing Liu ◽  
Zhi-Yong Wang ◽  
Jian-Ying Guo
Keyword(s):  
Optic Nerve ◽  
Intracranial Pressure ◽  
Supine Position ◽  
Dynamic Test ◽  
Optic Nerve Sheath Diameter ◽  
Optic Nerve Sheath ◽  
Strongly Correlated ◽  
Non Invasive ◽  
Nerve Sheath ◽  
Good Agreement

Abstract Objective: This study aimed to detect whether optic nerve sheath diameter (ONSD) can be used to dynamically monitor intracranial pressure (ICP). Methods: Adult patients being monitored for invasive ICP on day one after hospital admission were included. For each patient, ONSD was first measured in the supine position, then at the 30° head-up position. The dynamic test was conducted in 16 patients. The ONSD was measured in the supine position once a day for three continuous days (day one to day three after admission).Results: The ONSD and ICP values obtained in the supine position on admission were strongly correlated (r of 0.799). When patients changed their position from supine to the 30° head-up position, the ICP and ONSD values decreased correspondingly. However, the change in ICP did not correlate well with the change in ONSD (r of 0.358). In the dynamic test, a good agreement between ICP and ONSD only existed in three (18.75%) patients. In addition, three patients had completely different profiles for ICP and ONSD.Conclusions: The results suggest that the changes in ONSD and ICP values were not correlated well after dynamic observation. Measurement of ONSD may not be a suitable tool to dynamically monitor ICP.

scholarly journals Salivary Inflammatory Mediators in Cancer Diagnosis

2021 ◽  
pp. 23-27
Author(s):  
Mohammad F. ◽  
Hala M. Sbaih ◽  
Mohamed J. Saadh
Keyword(s):  
Cause Of Death ◽  
Cancer Diagnosis ◽  
Inflammatory Mediators ◽  
Cost Effective ◽  
Serum Biomarkers ◽  
Non Invasive ◽  
Salivary Biomarkers ◽  
Early Stages ◽  
Invasive Techniques

Cancer is the second leading cause of death worldwide; it can be successfully treated in the early stages. Screening for cancer should be performed in safe, accurate, cost-effective, and non-invasive techniques and therefore achieved the patient convenience. The salivary diagnosis could be a promising era in oncological fields, which have some correlations with serum biomarkers in certain cancers. In this paper, we reviewed some of the salivary biomarkers in detecting different cancers and their origins [genomics, epigenomics, transcriptomics, metabolomics, proteomics, and microbiota].

Refining non-invasive techniques to measure intracranial pressure: comparing evoked and spontaneous tympanic membrane displacements

2018 ◽  
Vol 39 (2) ◽  
pp. 025007 ◽  
Author(s):  
Laurie C Finch ◽  
Robert J Marchbanks ◽  
Diederik Bulters ◽  
Anthony A Birch
Keyword(s):  
Intracranial Pressure ◽  
Tympanic Membrane ◽  
Non Invasive ◽  
Invasive Techniques

scholarly journals Non-invasive intracranial pressure monitoring in idiopathic intracranial hypertension and lumbar puncture in pediatric patient: Case report

2021 ◽  
Vol 12 ◽  
pp. 493
Author(s):  
Thomas Markus Dhaese ◽  
Leonardo C. Welling ◽  
Alice Magro Kosciasnki ◽  
Gustavo Frigeri ◽  
Judy Auada ◽  
...  
Keyword(s):  
Case Report ◽  
Intracranial Pressure ◽  
Intracranial Hypertension ◽  
Lumbar Puncture ◽  
Idiopathic Intracranial Hypertension ◽  
Intracranial Pressure Monitoring ◽  
Invasive Technique ◽  
Icp Monitoring ◽  
Pressure Monitoring ◽  
Non Invasive

Background: Intracranial pressure (ICP) monitoring has been variously explored as a diagnostic and therapeutic modality in many pathological conditions leading neurological injury. This monitoring standardly depends on an invasive procedure such as cranial or lumbar catheterization. The gold standard for ICP monitoring is through an intraventricular catheter, but this invasive technique is associated with certain risks such as haemorrhage and infection. (1) Also, it is a high-cost procedure and consequently not available in a variety of underprivileged places and clinical situations in which intracranial hypertension is prevalent (3). An accurate non-invasive and low-priced method to measure elevated ICP would therefore be desirable. Under these circumstances, Brazilian scientists developed a non-invasive method for intracranial pressure monitoring (ICP-NI), which uses an electric resistance extensometer that measures micro deformations of the skull and transforms it into an electrical signal. In this case report, the authors describe a pediatrician patient with the diagnosis of idiopathic intracranial hypertension who was successfully submitted to a lumbar puncture under monitorization with this device. Case description: 7 year old girl with progressive symptoms that lead to the diagnosis of idiopathic intracranial hypertension. The patient was submitted to a lumbar punction with continuous non-invasive ICP monitoring. Conclusion: Estimating ICP (non-invasive) from LP monitoring (invasive) often reflect inaccurate ICP results, and affects negatively on IIH diagnosis and a non-invasive diagnostic method could reduce the requirement for invasive approaches, improving patient health outcomes.

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