Electrotherapy Flashcards

1
Q

electrical current

A

is the flow of electrical charge particles

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2
Q

what is the charge of the anode?

A

positive (red)

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3
Q

What is the charge of the cathode?

A

negative (black)

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4
Q

What is a direct current?

A

continuous unidirectional flow of particles

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5
Q

alternating current

A

continuous bidirectional flow of particles

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6
Q

what is amplitude?

A

magnitude of current?

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7
Q

what are three types of med frequency alternating current?

A

interferential, pre-mod, and Russian

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8
Q

interferential current is most effective

A

inflammation and ischemia.

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9
Q

What is the frequency of Russian protocol

A

2500 Hz.

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10
Q

What is the strength duration curve?

A

The amount of electricity required to produce an action potential depends on the type of nerve and can be represented by the nerve’s strength-duration curve

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11
Q

Slow twitch fibers are:

A

type 1
small nerve
fatigue and atrophy resistant

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12
Q

Fast twitch fibers are:

A

type2
larger nerve innervation
fatigue quickly

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13
Q

If you were trying to reduce muscle spasm which ratio would you use?

A

1:1 ratio

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14
Q

How does interferential current work?

A

Produced by the interference of two medium frequency alternating currents of slightly different frequencies.
They cause a higher amp working together
Cause a lower amp working against each other.
calculate wave by the difference of the frequencies.

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15
Q

What is interferential current used for?

A

decrease pain associated with inflammation and ischemia.

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16
Q

What is Russian protocol used for and what is the frequency?

A

It is used for muscle strengthening and the frequency is 2500 Hz

17
Q

Why are ramp up times used?

A

to increase pt. comfort when using ES.

18
Q

What is the most common monophasic current and what is it used for?

A

High volt pulsatile current. Used for tissue healing and decrease edema.

19
Q

What biphasic can be used to control pain or create a muscle contraction?

A

The TENS unit