Electrical Currents For Muscle Contraction

Question 1

Indications

Answer 1

• restore functional ability

- Prevent conditions associated with immobility

Question 2

2 types of waveforms

Answer 2

Pulsed Biphasic Waveform

Russian protocol (KOTS)

Question 3

“Pulse” medium frequency AC delivered in bursts

Answer 3

Russian protocol

Question 4

Electrodes usually placed at

Answer 4

Midpoint of muscle belly

Question 5

One electrode is placed over ____

Second is placed

Answer 5

Motor point

Parallel to muscle fibers.

Question 6

Pulse duration range?

Where is it not applicable?

Answer 6

150 to 350 microseconds

Russian Protocol

Question 7

Portable units usually fixed at what duration?

Answer 7

300 microseconds

Question 8

Parameter for frequency

Answer 8

20-80 pps

Question 9

Which frequency is best to produce strength

Answer 9

50-80pps

Question 10

Russuan protocal frequency usually at

Answer 10

50 pps

Question 11

Duty cycle for russian protocol

Answer 11

10 on 50 off

Question 12

On/off ratio for edema, DVT, and muscle spasm

Answer 12

1:1

Question 13

Allows for gradual increase and decrease in force

Answer 13

Ramp time

Question 14

Longer ramp times req’d when

Answer 14

Contracting antagonist of spastic muscle

Question 15

What will produce muscle contraction in denervated muscle

Answer 15

Continuous Direct current

Question 16

Contraindications

Answer 16

Pacemaker
Over carotid sinus
Preggo
Muscle tear
Thrombosis

Question 17

Parameters of NMES

Answer 17

Waveform (Biphasic or russian)
Type of electrode
Pulse duration
Frequency
Amplitude
Ramp time
Duty cycle