Flashcards in Neurodynamics and EPA Deck (20):
What does TENs stand for?
Transcutaneous electrical Nerve Stimulation
What are the proposed physiological effects of TENS?o iof
Stiimulation of sensory nerves - A beta nerve fibres
Pain Gate Mechanism
Other possible effects: improved healing, oedema control
What are a beta fibres?
Touch and pressure
What are a delta fibres?
What are pain receptors?
What is a low frequency current
1000 Hz or less
What is a medium frequency current?
What is high frequency current?
Usually measured in MHz
What is interference current?
Two different medium frequency currents superimposed in the tissues at the same time
They interfere and a new current results (beat or treatment frequency)
What is the beat frequency?
Also known as amplitude modulation frequency
Equal to difference in re quench between two individual currents
What are the advantages of IFC?
Penetrates tissues more deeply
Covers larger volume of tissue
Versatility of application
AC- no electrolytic effects on skin, although damage can still occur
What would DC do to skin?
Chemical burns/tissue damage
What is sweep/swing?
Minimises accommodation (but is doubtful)
What does vector rotation/scanning mean?
Rhythmically increases and decreases amount of current in one circuit qhw doing the opposite in other
Stimulates more nerve fibres parallel
Best to leave OFF
What are types of electrodes we use?
What electrodes should not be used?
What shouldn't Quadripolar pads be used?
Too close together ➡️ electrical burn
What happens if the electrodes aren't crossed in Quadripolar technique?
Combined medium frequency
What is bipolar electrode placement?
Used if four won't fit.
Also called premeditated technique. Currents Re superimposed within the IF machine, not the tissues