Analysis of a Non-invasive Intracranial Pressure Monitoring Method in Patients with Traumatic Brain Injury

Acta Neurochirurgica. Supplement
G FrigieriS Mascarenhas

Abstract

We aimed to compare the invasive (iICP) and a non-invasive intracranial pressure (nICP) monitoring methods in patients with traumatic brain injury, based on the similarities of the signals' power spectral densities. We recorded the intracranial pressure of seven patients with traumatic brain injury admitted to Hospital São João, Portugal, using two different methods: a standard intraparenchymal (iICP) and a new nICP method based on mechanical extensometers. The similarity between the two monitoring signals was inferred from the Euclidean distance between the non-linear projection in a lower dimensional space (ISOMAP) of the windowed power spectral densities of the respective signals. About 337 h of acquisitions were used out of a total of 608 h. The only data exclusion criterion was the absence of any of the signals of interest. The averaged distance between iICP and nICP, and between arterial blood pressure (ABP) and nICP projections in the embedded space are statistically different for all seven patients analysed (Mann-Whitney U, p < 0.05). The similarity between the iICP and nICP monitoring methods was higher than the similarity between the nICP and the recordings of the radial ABP for all seven patients. Despite the possibl...Continue Reading

Associated Clinical Trials

Jun 12, 2020·Sergio Brasil, MD

Citations

Jun 6, 2019·Annual Review of Biomedical Engineering·Thomas HeldtNino Stocchetti
Apr 17, 2021·Neurosurgery·Gustavo FrigieriRalph Pelligra
Jun 24, 2021·Arquivos de neuro-psiquiatria·Fabiano Moulin de Moraes, Gisele Sampaio Silva
Jul 30, 2021·Physiological Reports·Patrice BrassardPhilip N Ainslie

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