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Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.
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Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits
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Published on: March 27, 2021

Triphasic waves.

Francesco Brigo1, Monica Storti

  • 1Department of Neurological, Neuropsychological, Morphological and Movement Sciences, Section of Neurology, University of Verona, Verona, Italy.

American Journal of Electroneurodiagnostic Technology
|April 27, 2011
PubMed
Summary
This summary is machine-generated.

Triphasic waves (TWs) on EEG are non-specific and often misinterpreted. Clinical context and response to benzodiazepines are crucial for accurate diagnosis, preventing misdiagnosis of conditions like nonconvulsive status epilepticus.

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Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy
10:22

Interictal High Frequency Oscillations Detected with Simultaneous Magnetoencephalography and Electroencephalography as Biomarker of Pediatric Epilepsy

Published on: December 6, 2016

Area of Science:

  • Neurophysiology
  • Clinical Neurology

Background:

  • Triphasic waves (TWs) are a common but non-specific electroencephalogram (EEG) pattern.
  • Initially associated with hepatic encephalopathy, TWs are now recognized in various metabolic and structural encephalopathies.
  • Sharply contoured TWs can mimic ictal patterns, particularly nonconvulsive status epilepticus (NCSE).

Purpose of the Study:

  • To highlight the diagnostic challenges posed by triphasic waves (TWs) in EEG interpretation.
  • To emphasize the importance of integrating clinical and laboratory findings with EEG data.
  • To differentiate non-epileptic TWs from true ictal patterns.

Main Methods:

  • Review of EEG patterns and associated clinical conditions.
  • Analysis of cases where TWs were misinterpreted.
  • Emphasis on electroclinical correlation and response to interventions.

Main Results:

  • Triphasic waves (TWs) are not pathognomonic of any single condition.
  • Misinterpretation of TWs as ictal patterns can occur, especially in NCSE.
  • Clinical evaluation, including assessment of consciousness and response to benzodiazepines, is essential.

Conclusions:

  • Interpreting triphasic waves (TWs) solely based on EEG is insufficient and potentially misleading.
  • Accurate diagnosis requires a comprehensive approach combining EEG findings with clinical presentation and laboratory results.
  • Failure to consider the full clinical picture can lead to significant diagnostic errors and adverse patient outcomes.