Monitoring Neurological Deterioration in Anaesthetised Patients With Electroencephalogram (EEG)

CVA Clinical Trial

Official title:

Monitoring Neurological Deterioration in Anaesthetised Patients With Electroencephalogram (EEG): Demonstration With Patients Undergoing Neurovascular Intervention After Cerebrovascular Attack (CVA).

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT02691338
• Other study ID #: 0459-15-Rambam-CTIL
• Status: Recruiting
• Start date: February 2016
• Est. completion date: December 2025

Study information

• Verified date: December 2023
• Source: Rambam Health Care Campus
• Contact: Dana Baron Shahaf, MD PhD
• Phone: 972-50-2065929
• Email: dana_bs[@]rambam.health.gov.il
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

The incidence of perioperative stroke in the non-cardiac, non-vascular, non-neurological high risk surgical population is 2%. It is higher (~5%) for cardiac surgery and carotid endarterectomy patients, with a stroke associated mortality of up to 60%. These patients could be immediately treated if their condition was detected on time. Currently, there is no standard brain monitoring procedure for anaesthetised patients. The purpose of the proposed study is to optimize and validate an online monitor for neurological deterioration under anaesthesia based on an easily operatable EEG system comprised of 4 electrodes, a reference electrode and a newely developed algorithm for analyzing the EEG signal. The monitor aims at generating an immediate warning at the onset of neurological deterioration. For the purpose of technology development with a minimal sample size, it is necessary to select a patient population that demonstrates significant neurological dynamics under anaesthesia. We will therefore focus on anesthesized patients undergoing neurovascular thrombectomy after CVA.

Description:

The research aim is to validate a novel ground-breaking and easy-to-use EEG-based algorithm for sensing cerebrovascular accident (CVA) events under anaesthesia. Today there is no standard tool for CVA detection in anaesthetized patients. Thus the possibility of waking up from anaesthesia with severe brain damage is devastating. Patients undergoing cardiac surgery (such as valve replacement, CABG, thoracic aorta replacement, PTCA, TAVI (trans-aortic valve implantation)), carotid endarterectomy and surgery in sitting position, are at exceptionally high risk. We have developed a unique algorithm for detecting brain ischemia in anaesthetized patients, based on data acquired from 4 EEG electrodes. Our final goal is to develop a system that triggers an alarm when an ischemia occurs in an anaesthetized patient and during the peri-operative period.

In order to validate and optimize our system, we require a small sample size to test and validate the technology. The population for this study includes patients with acute CVA who undergo mechanical thrombectomy under anaesthesia. Although these patients already have CVA, clinical dynamics is high in this population, and will enable a demonstration of our ability to recognize immediate changes in neurological status (improvement or deterioration).

We believe this innovative EEG based system could be of major significance to millions of patients annually.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 150
• Est. completion date: December 2025
• Est. primary completion date: December 2024
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years and older

Eligibility

Inclusion Criteria:

• Informed consent (by individual or guardian)

• Undergoing thrombectomy procedure under anaesthesia for acute CVA

• for control:

• Healthy individual, with no neurological disease undergoing sedation for procedure

Exclusion Criteria:

• Age < 18 years

• no informed consent

Related Conditions & MeSH terms

• CVA

Intervention

Other:
• EEG
EEG analysis
• Routine follow up tests
Routine tests for patients after CVA. This include: neurologic evaluation, Brain CT, Angiography

Locations

Country	Name	City	State
Israel	Rambam Health Care Campus	Haifa

Sponsors (1)

Lead Sponsor	Collaborator
Rambam Health Care Campus

Country where clinical trial is conducted

Israel, 

References & Publications (7)

Foreman B, Claassen J. Quantitative EEG for the detection of brain ischemia. Crit Care. 2012 Dec 12;16(2):216. doi: 10.1186/cc11230. No abstract available. — View Citation

Jauch EC, Saver JL, Adams HP Jr, Bruno A, Connors JJ, Demaerschalk BM, Khatri P, McMullan PW Jr, Qureshi AI, Rosenfield K, Scott PA, Summers DR, Wang DZ, Wintermark M, Yonas H; American Heart Association Stroke Council; Council on Cardiovascular Nursing; Council on Peripheral Vascular Disease; Council on Clinical Cardiology. Guidelines for the early management of patients with acute ischemic stroke: a guideline for healthcare professionals from the American Heart Association/American Stroke Association. Stroke. 2013 Mar;44(3):870-947. doi: 10.1161/STR.0b013e318284056a. Epub 2013 Jan 31. — View Citation

Moritz S, Kasprzak P, Arlt M, Taeger K, Metz C. Accuracy of cerebral monitoring in detecting cerebral ischemia during carotid endarterectomy: a comparison of transcranial Doppler sonography, near-infrared spectroscopy, stump pressure, and somatosensory evoked potentials. Anesthesiology. 2007 Oct;107(4):563-9. doi: 10.1097/01.anes.0000281894.69422.ff. — View Citation

Mozaffarian D, Benjamin EJ, Go AS, Arnett DK, Blaha MJ, Cushman M, de Ferranti S, Despres JP, Fullerton HJ, Howard VJ, Huffman MD, Judd SE, Kissela BM, Lackland DT, Lichtman JH, Lisabeth LD, Liu S, Mackey RH, Matchar DB, McGuire DK, Mohler ER 3rd, Moy CS, Muntner P, Mussolino ME, Nasir K, Neumar RW, Nichol G, Palaniappan L, Pandey DK, Reeves MJ, Rodriguez CJ, Sorlie PD, Stein J, Towfighi A, Turan TN, Virani SS, Willey JZ, Woo D, Yeh RW, Turner MB; American Heart Association Statistics Committee and Stroke Statistics Subcommittee. Heart disease and stroke statistics--2015 update: a report from the American Heart Association. Circulation. 2015 Jan 27;131(4):e29-322. doi: 10.1161/CIR.0000000000000152. Epub 2014 Dec 17. No abstract available. Erratum In: Circulation. 2015 Jun 16;131(24):e535. Circulation. 2016 Feb 23;133(8):e417. — View Citation

Shahaf DB, Shahaf G, Mehta J, Venkatraghavan L. Intracarotid Etomidate Decreases the Interhemispheric Synchronization in Electroencephalogram (EEG) During the Wada Test. J Neurosurg Anesthesiol. 2016 Oct;28(4):341-6. doi: 10.1097/ANA.0000000000000241. — View Citation

Shahaf G, Fisher T, Aharon-Peretz J, Pratt H. Comprehensive analysis suggests simple processes underlying EEG/ERP - demonstration with the go/no-go paradigm in ADHD. J Neurosci Methods. 2015 Jan 15;239:183-93. doi: 10.1016/j.jneumeth.2014.10.016. Epub 2014 Nov 1. — View Citation

Shahaf G, Pratt H. Thorough specification of the neurophysiologic processes underlying behavior and of their manifestation in EEG - demonstration with the go/no-go task. Front Hum Neurosci. 2013 Jun 24;7:305. doi: 10.3389/fnhum.2013.00305. eCollection 2013. — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	EEG-based interhemispheric synchronization index		Interhemispheric synchronization is measured retrospectively - for the whole period the patient is under general anesthesia