Electrical Stimulation and Muscle Contraction Flashcards

1
Q

Muscle Re-education

A

prevents atrophy, helps a spasm relax and helps control edema

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2
Q

___________________ after surgery is the primary reason for using electrical stimulation for muscle re-education

A

muscle inhibition

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3
Q

arthrogenic muscle inhibition

A

when a muscle can’t contract, but it’s not a problem within the muscle, it’s a problem within the joint
- the joint and CNS are trying to protect you from further injury

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4
Q

Normal joint moves close to _____ degrees/seconds

A

1000

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5
Q

Estim can increase isokinetic strength at specific speeds

A

65 degrees/second

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6
Q

Only use ______ when patient is struggling to contract on their own

A

NMES

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7
Q

Muscle Re-education: Frequency

A

2500 to 5000 Hz

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8
Q

Muscle Re-education: Beat Frequency

A

30 to 60 pps

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9
Q

Muscle Re-education: Intensity

A

Visible muscle contraction

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10
Q

Muscle Re-education: Ramp

A

1:5 (20%) at first, then 1:3 (30%), then 1:2 (50%)

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11
Q

Muscle Re-education: Treatment time

A

15 to 20 minutes

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12
Q

Muscle Re-education: Electrode placement

A

bipolar - over motor points if possible

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13
Q

motor points

A

general area where the motor nerve generates the muscle; shoot for midline/mid belly of the muscle

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14
Q

Goal with e-stim is to break the ___________ cycle

A

pain-spasm-pain

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15
Q

E-stim for muscle spasm

A

induce a strong contraction to help break up a contraction or muscle spasm

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16
Q

goal is to induce involuntary _____ contraction

A

tetanic

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17
Q

Muscle Spasm Contraindications

A

acute injury

local instability - fracture

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18
Q

Muscle Spasm: Electrode placement

A

bipolar, traget motor points or trigger points

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19
Q

Muscle Spasm: Pulse rate

A

50 to 60 pps

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20
Q

Muscle Spasm: Intensity

A

visible (steady) contraction

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21
Q

Muscle Spasm: Duty cycle

A

10 seconds on, 10 seconds off (1:1)

22
Q

Muscle Spasm: Ramp

A

1 to 2 seconds on, 1 to 2 seconds off

23
Q

Muscle Spasm: Treatment time

A

10 to 20 minutes

24
Q

E-stim for Edema reduction

A

creates “pump” for moving the edema, agonist contraction followed by an antagonist contraction

25
Q

Edema Reduction: Gentle contraction

A

1 to 10 pps

26
Q

Edema Reduction: if pain not worsened by e-stim

A

30 to 50 pps

27
Q

Edema Reduction: Intensity

A

visible contraction

28
Q

Agonist contraction for __________ seconds then relax, followed by antagonist contraction for ________ seconds

A

5 to 10; 5 to 10

29
Q

high-volt pulse current (HVPC)

A

decrease capillary permeability
Monophasic negative charge
evidence only in animals

30
Q

HVPC (sensory) for acute edema: Frequency

A

120 pps

31
Q

HVPC (sensory) for acute edema: Intensity

A

sensory only, no contracion

32
Q

HVPC (sensory) for acute edema: Polarity

A

cathode (negative) over injured tissue

33
Q

HVPC (sensory) for acute edema: Treatment time

A

4 x 30 minutes with 60 minutes rest intervals

34
Q

For chronic injuries put the ________ pad over the injury

A

postive

35
Q

For acute injuries put the _________ pad over the injury

A

negative

36
Q

Russian Electrical Stimulation

A

Dr. Yajov Kots
first introduced around the Olympics
Type II muscle fiber recruitment

37
Q

Russian: Frequency

A

2500 Hz

38
Q

Russian: Amplitude

A

muscle contraction

39
Q

Russian: Frequency

A

30 to 60 ps

40
Q

Russian: Burst duty cycle

A

50%

41
Q

Russian: on/off duty cycle

A

1:5

42
Q

Russian: Treatment

A

10/50/10

43
Q

Biphasic for Contraction: Freqency

A

1 to 200 pps

44
Q

Biphasic for Contraction: Pase duration

A

20 to 300 μsec

45
Q

Biphasic for Contraction: Intrapulse interval

A

~ 100 μsec

46
Q

Biphasic for Contraction: Intensity

A

contraction

47
Q

Biphasic for Contraction: Burst duty cycle

A

1:5, 1:3

48
Q

Biphasic for Contraction: Ramp

A

1 to 3 seconds

49
Q

The lower the frequency, the _______ the pulse duration

A

higher

50
Q

The higher the frequency, the _______ the pulse duration

A

lower