Essential EDX Series: Volume II Insertional and Spontaneous Activity

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