Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2023 Mar 1;92(3):647-656.
doi: 10.1227/neu.0000000000002250. Epub 2022 Dec 1.

Fiber-Optic Intracranial Pressure Monitoring System Using Wi-Fi-An In Vivo Study

Erasmo Barros da Silva Junior  1 , Eder Eidi Hamasaki  2 , Hamzah Youssef Smaili  1 , Arthur Wozniak  2 , Enézio Satoru Yoshida Tristão  2 , Marcelo de Paula Loureiro  3 , Jerônimo Buzetti Milano  1 , Murilo Sousa de Meneses  1 , Rafael Martinelli de Oliveira  4 , Ricardo Ramina  1
Affiliations

Fiber-Optic Intracranial Pressure Monitoring System Using Wi-Fi-An In Vivo Study

Erasmo Barros da Silva Junior et al. Neurosurgery. .

Abstract

Background: Continuous invasive monitoring of intracranial pressure (ICP) is essential in neurocritical care for surveillance and management of raised ICP. Fluid-based systems and strain gauge microsensors remain the current standard. In the past few decades, several studies with wireless monitoring were developed aiming to reduce invasiveness and complications.

Objective: To describe a novel Wi-Fi fiber-optic device for continuous ICP monitoring using smartphone in a swine model.

Methods: Two ICP sensors (wireless prototype and wire-based reference) were implanted in the cerebral parenchyma of a swine model for a total of 120 minutes of continuous monitoring. Every 5 minutes, jugular veins compression was performed to evaluate ICP changes. The experimentation was divided in 3 phases for comparison and analysis.

Results: Phase 1 showed agreement in ICP changes for both sensors during jugular compression and releasing, with a positive and strong Spearman correlation (r = 0.829, P < .001). Phase 2 started after inversion of the sensors in the burr holes; there was a positive and moderately weak Spearman correlation (r = 0.262, P < .001). For phase 3, the sensors were returned to the first burr holes; the prototype behaved similarly to the reference sensor, presenting a positive and moderately strong Spearman correlation (r = 0.669, P < .001).

Conclusion: A Wi-Fi ICP monitoring system was demonstrated in a comprehensive and feasible way. It was possible to observe, using smartphone, an adequate correlation regarding ICP variations. Further adaptations are already being developed.

PubMed Disclaimer

References

    1. Carney N, Totten AM, O'Reilly C, et al. Guidelines for the management of severe traumatic brain injury, fourth edition. Neurosurgery. 2017;80(1):6-15.
    1. Czosnyka M, Pickard JD. Monitoring and interpretation of intracranial pressure. J Neurol Neurosurg Psychiatry. 2004;75(6):813-821.
    1. Brain Trauma Foundation. Indications for intracranial pressure monitoring. J Neurotrauma. 1996;13(11):667-679.
    1. Eide PK, Bentsen G, Sorteberg AG, Marthinsen PB, Stubhaug A, Sorteberg W. A randomized and blinded single-center trial comparing the effect of intracranial pressure and intracranial pressure wave amplitude-guided intensive care management on early clinical state and 12-month outcome in patients with aneurysmal subarachnoid hemorrhage. Neurosurgery. 2011;69(5):1105-1115.
    1. Brain Trauma Foundation, The American Association of Neurological Surgeons. The joint section on neurotrauma and critical care. Recommendations for intracranial pressure monitoring technology. J Neurotrauma. 2000;17(6-7):497-506.

LinkOut - more resources