Exam 3: Intro to Electrotherapy Flashcards
What term is defined as the flow of charged particles
electrical current
What term defined as the location on the skin where electrical stimulation most effectively causes specific muscles to contract
motor points
What are 5 clinical applications/indications of electrical currents
to produce muscle contractions control pain promote tissue healing enhance transdermal drug delivery provide electromyographic biofeedback
What are the different types of waveforms of electrical current
direct current
alternating current
pulsed current
Which type of waveform/current is a continuous stream of charged particles
direct current
What type of current does iontophoresis use
direct current
Which type of waveform/current is a continuous, sinusoidal, bidirectional flow of charged particles
alternating current
Which type of waveform/current is an interrupted flow of charges particles with a current that flows as a series of pulses
pulsed current
what are the two types of pulsed currents
monophasic and biphasic
What type of current is produced by interference of two medium frequency alternating currents with slightly different frequencies
interferential current
What type of current is produced with a single circuit and two electrodes
premodulated
What is the beat frequency
The combination and difference in two electrodes during IFC stimulation
IFC stimulations is used to treat ____
pain
Premodulated current is essentially the same as ____ except it only as a single circuit
IFC
Why is premodulated current name PRE modulated
Because the current is pre-formed in the machine instead of in the person
Which type of current is used for muscle re-education or muscle strength
russian
Which type of current involves a medium frequency AC with a carrier frequency of 2500 Hz
russian
intensity or strength of a current is usually referred to as the ____
amplitude
ramping up and ramping down is commonly used during _____ treatment
russian
is an axon negative on the inside or outside of the axon
inside
on the strength-duration curve what is the range for sensory stimulation
50-100
on the strength-duration curve what is the range for motor stimulation
150-350
____ ms for denervated muscles on the strength-duration curve
10
What are adverse effects of electrical currents
burns, skin irritation, and pain
electrodes that are placed closer together will penetrate more (superficial/deep)
superficial
electrodes that are placed further apart will penetrate more (superficial/deep)
deep
