Interferential and Russian Currents, Iontophoresis Flashcards Preview

Passive Care Exam One > Interferential and Russian Currents, Iontophoresis > Flashcards

Flashcards in Interferential and Russian Currents, Iontophoresis Deck (44)
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1

What are the four types of interferential current?

1 true interferential
2 pre-modulated
3 vector scan
4 stereodynamic

2

What levels of frequency penetrate deeper?

Medium and high

3

What is the frequency range for IFC?

3,000-5,000 Hz

4

How is the treatment frequency produced with IFC?

Interference of the 2 currents in the body

5

What determines the treatment frequency for IFC?

Type of pain (acute, subacute, chronic)

6

What kind of interference occurs when two sinusoidal waves that are exactly in phase combine to supplement each other?

Constructive

7

What kind of interference occurs when two sinusoidal waves are exactly out of phase and the result is a cancellation of both waves?

Destructive

8

What is heterodyne interference?

Combination of constructive and destructive interference resulting in a wave with a beat effect

9

What is the benefit of using a target?

Reduction of inaccuracy of therapy by targeting the painful tissues

10

What is the difference between premodulated and true interferential current?

Pre-mod interference occurs in machine NOT body

11

What is the purpose of pre-mod current?

Pain relief

12

Pre-mod currents are good for areas of what size?

Small (2 electrodes on either side of pain)

13

What is the benefit and downfall of bipolar electrode placement via pre-mod current?

Pro: more accuracy
Con: does not penetrate tissues as deep

14

What kind of electrode configuration is seen with vector scan?

Quadripolar

15

What kind of current is used with vector scan?

True interferential

16

What makes vector scan different from regular true interferential?

Amplitude varies between the channels causing the cloverleaf pattern to rotate and provide a larger treatment area

17

How many channels and electrodes are used in a stereodynamic current, and what interference pattern shape is created?

6-petal flower shape: 3 channels and 6 electrodes

18

What type of treatment is BETTER for muscle strengthening?

Russian stimulation (even though IFC can help a tad)

19

Does increased circulation occur with IFC?

No (sometimes appears that way due to suction electrode systems)

20

What are the contraindications for IFC?

1 anterior cervical area
2 through chest
3 through head
4 pacemakers and ICDs
5 abdomen, pelvis, lumbar areas of 1st tri pregnant women
6 metal implants
7 epilepsy
8 areas of hemorrhage
9 cancer
10 confused/unreliable patients
11 damaged skin
12 unknown etiology

21

What are the risks associated with IFC?

Skin irritation

22

What are the frequency ranges for acute, chronic, and subacute pain for IFC?

Acute = high setting 80-150, low settle 60-120
Chronic = 1-15
Subacute = 1-150

23

What is the usual treatment time for IFC?

15-20 minutes

24

What is the desired amplitude for IFC when treating pain?

Patient comfort (tingling or muscle twitch)

25

What is the desired amplitude for IFC when working on strength?

Patient tolerance

26

What is the duty cycle used for strength IFC treatment?

10:50 (10 seconds on, 50 off)

27

What is the main purpose of using Russian current?

To cause muscle contraction for muscle strengthening

28

What are the indications for Russian current?

1 muscle re-education
2 retard atrophy
3 muscle strengthening
4 decrease muscle spasm through fatigue

29

What level of burst frequency is used for Russian stimulation?

50 Hz

30

What is the duty cycle used with Russian current for muscle strengthening?

10:50