Seizures After Cardiac Surgery -- A Study With Continuous EEG Monitoring
NCT ID: NCT01291992
Last Updated: 2018-03-13
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
100 participants
OBSERVATIONAL
2010-09-30
2013-01-31
Brief Summary
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Detailed Description
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Purpose of the study: The aim of this study is to determine the frequency of nonconvulsive seizures after cardiac surgery using an electroencephalogram or EEG, which records brainwaves through the scalp.
Design of the study: The investigators target is to enroll 150 patients undergoing cardiac surgery. The investigators are including patients greater than 18 years of age who are admitted to the CSRU immediately after cardiac surgery. Included patients are of normal mentation and are able to give their own consent. The investigators will exclude only those patients for whom technical issues prevent us from recording the EEG.
Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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Continuous EEG Monitoring
Immediately after surgery, while still sedated and in the cardiac surgery recovery unit, 9 sticker electrodes applied to the skin just below the hairline, which record brain activity onto a computer. The EEG will be recorded for 24 hours. This brain activity (EEG) will later be interpreted by a neurologist who will be looking for evidence of seizure activity in the brain waves. Other relevant information: age, sex, the nature of other health problems, drugs used, complications and whether or not seizures are found will be stored on our computer for further evaluation.
No interventions assigned to this group
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
18 Years
ALL
No
Sponsors
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London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's
OTHER
Responsible Party
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Michael Chu
Dr. Michael Chu
Principal Investigators
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Michael Chu, MD
Role: PRINCIPAL_INVESTIGATOR
London Health Sciences Centre, University Hospital
Locations
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London Health Sciences Centre, University Hospital
London, Ontario, Canada
Countries
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References
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Bucerius J, Gummert JF, Borger MA, Walther T, Doll N, Onnasch JF, Metz S, Falk V, Mohr FW. Stroke after cardiac surgery: a risk factor analysis of 16,184 consecutive adult patients. Ann Thorac Surg. 2003 Feb;75(2):472-8. doi: 10.1016/s0003-4975(02)04370-9.
Roach GW, Kanchuger M, Mangano CM, Newman M, Nussmeier N, Wolman R, Aggarwal A, Marschall K, Graham SH, Ley C. Adverse cerebral outcomes after coronary bypass surgery. Multicenter Study of Perioperative Ischemia Research Group and the Ischemia Research and Education Foundation Investigators. N Engl J Med. 1996 Dec 19;335(25):1857-63. doi: 10.1056/NEJM199612193352501.
Young GB, Jordan KG, Doig GS. An assessment of nonconvulsive seizures in the intensive care unit using continuous EEG monitoring: an investigation of variables associated with mortality. Neurology. 1996 Jul;47(1):83-9. doi: 10.1212/wnl.47.1.83.
Jordan KG. Continuous EEG and evoked potential monitoring in the neuroscience intensive care unit. J Clin Neurophysiol. 1993 Oct;10(4):445-75. doi: 10.1097/00004691-199310000-00006.
Furtmuller R, Schlag MG, Berger M, Hopf R, Huck S, Sieghart W, Redl H. Tranexamic acid, a widely used antifibrinolytic agent, causes convulsions by a gamma-aminobutyric acid(A) receptor antagonistic effect. J Pharmacol Exp Ther. 2002 Apr;301(1):168-73. doi: 10.1124/jpet.301.1.168.
Mohseni K, Jafari A, Nobahar MR, Arami A. Polymyoclonus seizure resulting from accidental injection of tranexamic acid in spinal anesthesia. Anesth Analg. 2009 Jun;108(6):1984-6. doi: 10.1213/ane.0b013e3181a04d69.
Murkin JM, Falter F, Granton J, Young B, Burt C, Chu M. High-dose tranexamic Acid is associated with nonischemic clinical seizures in cardiac surgical patients. Anesth Analg. 2010 Feb 1;110(2):350-3. doi: 10.1213/ANE.0b013e3181c92b23. Epub 2009 Dec 8.
Gofton TE, Chu MW, Norton L, Fox SA, Chase L, Murkin JM, Young GB. A prospective observational study of seizures after cardiac surgery using continuous EEG monitoring. Neurocrit Care. 2014 Oct;21(2):220-7. doi: 10.1007/s12028-014-9967-x.
Other Identifiers
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17107
Identifier Type: OTHER
Identifier Source: secondary_id
R-10-259
Identifier Type: -
Identifier Source: org_study_id
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