Clinical Evaluation of the Codman Microsensor Intracranial Pressure Monitoring System

Fernandes, Hilda; Bingham, Kathleen; Chambers, I. R.; Mendelow, AD

doi:10.1007/978-3-7091-6475-4_14

Cited by 30 publications

(31 citation statements)

References 3 publications

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“…Major differences in the mean ICP were first observed by Fernandes et al, who demonstrated sudden shifts in the mean ICP while simultaneously using 2 separate IPMs (1 Codman microsensor and 1 Camino fiberoptic device). 10 In our study, the differential pressure between NI-ICP and I-ICP was within ± 3 mm Hg in 63% of data-paired readings and within ± 5 mm Hg in 85% of data-paired readings. We believe these findings to be particularly interesting because similar differences have been reported for studies comparing 2 invasive modalities, intraventricular and intraparenchymal ICP.…”

Section: Discussionsupporting

confidence: 57%

Evaluation of a novel noninvasive ICP monitoring device in patients undergoing invasive ICP monitoring: preliminary results

Ganslandt

Mourtzoukos

Stadlbauer

et al. 2018

Journal of Neurosurgery

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ABBREVIATIONS AUC = area under the curve; CPP = cerebral perfusion pressure; EVD = external ventricular drainage; I-ICP = invasive intracranial pressure; ICU = intensive care unit; IPM = intraparenchymal monitor; NI-ICP = noninvasive ICP; ONSD = optic nerve sheath diameter; ROC = receiver operating characteristic; TBI = traumatic brain injury. In this study a new method of NI-ICP monitoring performed using algorithms to determine ICP based on acoustic properties of the brain was applied in patients undergoing invasive ICP (I-ICP) monitoring, and the results were analyzed. METHODS In patients with traumatic brain injury and subarachnoid hemorrhage who were undergoing treatment in a neurocritical intensive care unit, the authors recorded ICP using the gold standard method of invasive external ventricular drainage or intraparenchymal monitoring. In addition, the authors simultaneously measured the ICP noninvasively with a device (the HS-1000) that uses advanced signal analysis algorithms for acoustic signals propagating through the cranium. To assess the accuracy of the NI-ICP method, data obtained using both I-ICP and NI-ICP monitoring methods were analyzed with MATLAB to determine the statistical significance of the differences between the ICP measurements obtained using NI-ICP and I-ICP monitoring. RESULTS Data were collected in 14 patients, yielding 2543 data points of continuous parallel ICP values in recordings obtained from I-ICP and NI-ICP. Each of the 2 methods yielded the same number of data points. For measurements at the ≥ 17-mm Hg cutoff, which was arbitrarily chosen for this preliminary analysis, the sensitivity and specificity for the NI-ICP monitoring were found to be 0.7541 and 0.8887, respectively. Linear regression analysis indicated that there was a strong positive relationship between the measurements. Differential pressure between NI-ICP and I-ICP was within ± 3 mm Hg in 63% of data-paired readings and within ± 5 mm Hg in 85% of data-paired readings. The receiver operating characteristic-area under the curve analysis revealed that the area under the curve was 0.895, corresponding to the overall performance of NI-ICP monitoring in comparison with I-ICP monitoring. CONCLUSIONS This study provides the first clinical data on the accuracy of the HS-1000 NI-ICP monitor, which uses advanced signal analysis algorithms to evaluate properties of acoustic signals traveling through the brain in patients undergoing I-ICP monitoring. There is growing evidence that ICP monitoring and protocol-driven therapy help to improve clinical outcome in a number of pathologies such as traumatic brain injury (TBI), brain infections such as meningitis, and brain tumors. 22 To date, ICP monitoring is still an invasive procedure in which a burr hole is used to introduce a transducer-coupled probe into the brain parenchyma or into the ventricles. Invasive ICP ©AANS, 2017 SUBMITTED

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Section: Discussionsupporting

confidence: 57%

Evaluation of a novel noninvasive ICP monitoring device in patients undergoing invasive ICP monitoring: preliminary results

Ganslandt

Mourtzoukos

Stadlbauer

et al. 2018

Journal of Neurosurgery

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“…76 Fiberoptic intraparenchymal monitors, associated with the less than 20% risk of hemorrhagic complications that many clinicians consider acceptable, are the most frequently used ICP devices in many institutions. 77,78 An alternative noninvasive method is the pulsatility index measured by transcranial Doppler, which correlates well with ICP fluctuations. 79 However, transcranial Doppler does not provide direct or continuous measurement of ICP and some investigators feel that it is suboptimally sensitive.…”

Section: Complications Specific To the Type Of Sot Livermentioning

confidence: 99%

Neurological Complications of Solid Organ Transplantation

Pruitt

Graus

Rosenfeld

2013

The Neurohospitalist

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Solid organ transplantation (SOT) is the preferred treatment for an expanding range of conditions whose successful therapy has produced a growing population of chronically immunosuppressed patients with potential neurological problems. While the spectrum of neurological complications varies with the type of organ transplanted, the indication for the procedure, and the intensity of long-term required immunosuppression, major neurological complications occur with all SOT types. The second part of this 2-part article on transplantation neurology reviews central and peripheral nervous system problems associated with SOT with clinical and neuroimaging examples from the authors' institutional experience. Particular emphasis is given to conditions acquired from the donated organ or tissue, problems specific to types of organs transplanted and drug therapy-related complications likely to be encountered by hospitalists. Neurologically important syndromes such as immune reconstitution inflammatory syndrome (IRIS), posterior reversible encephalopathy syndrome (PRES), and posttransplantation lymphoproliferative disorder (PTLD) are readdressed in the context of SOT.

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“…Additionally, the ability to place an ICP monitor may be delayed because of the coagulopathy that often accompanies patients with severe injuries [7]. Moreover, the invasive manner of an intracranial pressure monitor carries several risks, including hemorrhage, infection, malposition, obstruction, and device malfunction [8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Sonographic Optic Nerve Sheath Diameter as an Estimate of Intracranial Pressure in Adult Trauma

Strumwasser

Kwan

Yeung

et al. 2011

Journal of Surgical Research

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Clinical Evaluation of the Codman Microsensor Intracranial Pressure Monitoring System

Cited by 30 publications

References 3 publications

Evaluation of a novel noninvasive ICP monitoring device in patients undergoing invasive ICP monitoring: preliminary results

Evaluation of a novel noninvasive ICP monitoring device in patients undergoing invasive ICP monitoring: preliminary results

Neurological Complications of Solid Organ Transplantation

Sonographic Optic Nerve Sheath Diameter as an Estimate of Intracranial Pressure in Adult Trauma

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