Essential EDX Series: Volume II Insertional and Spontaneous Activity

Introduction

• Technical Aspects
• Action Potential
• Intrumentation
• Settings and Display

 

Insertional Activity

• Lecture
• Normal
• Increased
• Reduced
• Dual Time Base – Filters
• Pitfalls

 

Miniature End-plate

• Potentials
• Lecture
• Waveform and Rhythm
• With EP Spikes

 

End-plate Spikes

• Lecture
• Waveform and Rhythm
• Interference and MEPPs
• Triphasic
• vs MUP

 

Fibrillation Potentials and

• Positive Sharp Waves
• Lecture
• Waveform – Rhythm (Fib)
• Rain on Tin Roof
• FP = PSW
• Low Amplitude
• Waveform-Rhythm (PSW)
• Trains of PSW
• Not Sustained
• Voluntary Activation
• vs MUP
• Complex Waveform

 

Complex Repetitive

• Discharge
• Lecture
• Waveform – Rhythm
• Abrupt Change
• Slow Rate
• Simple
• Ephaptic Transmission

 

Myotonic Discharge

• Lecture
• Waveform and Rhythm
• Percussion
• “Distant Thunder”
• Slow

 

Fasciculation Potential

• Lecture
• Waveform – Rhythm (Fib)
• Neurogenic MUP
• vs MUP
• Very Slow
• Pitfalls

 

Myokymic Discharge

• Lecture
• Waveform – Rhythm
• Many MUPs
• Two Discharges
• Facial Muscle

 

Neuromyotonic Discharge

• Lecture
• Waveform and Rhythm
• Induced by MUP

 

Cramp Discharge

• Lecture
• Waveform and Rhythm
• Sudden Onset