IFC

Question 1

Low frequency amplitude modulated current?

Answer 1

IFC

Question 2

What is ifc..

Answer 2

2 medium frequency currents connecting and giving off low frequency “beats”

Question 3

Beat frequency summates in

Answer 3

DEEP tissue, bypassing superficial nerves

Question 4

Frequency of “beat”

Answer 4

250 pps

Question 5

IFC modulates _____

While tens usually delivers ______

Answer 5

High freq (4000Hz)

125Hz

Question 6

Therapeutic effects of IFC

Answer 6

Analgesia
Produce muscle contraction
Reduce edema

Question 7

Modes of IFC delivery

Answer 7

Bipolar
Quadripolar
Quadripolar w/ scan
W/ sweep
W/swing

Question 8

Interferency within machine

2 pad placement

Answer 8

Bipolar/modulated

Question 9

When the 2 currents intersect at 90 dgs from each other, the maximum resultant amplitude of the interferential current field is halfway between these 2 lines of current (in this case, at 45 dgs diagonally from each circuit)

Answer 9

Quadripolar

Question 10

Amplitude modulation of input currents.. cause electrical field to rotate

Answer 10

Quadripolar w/ scan

Question 11

Results in a beat frequency that progressively increases and decreases between the lowest to highest beat frequency selected

Answer 11

Continuous sweep

Question 12

Over 2 seconds current decreases linearly and continuously from 100 to 10 Hz and then
Increases linearly and continuously from 10 to 100 HZ over 2 seconds.

Answer 12

Peak-peak

Question 13

Dose of IFC dependent on

Answer 13

Amplitude
Mode
Duration

Question 14

Frequency for:

Pain

Edema

Muscle rehab

Answer 14

80-150

1-10

10-100