IFC Flashcards
IFC
2 medium frequency AC intersect within tissues
interaction gives rise to interference current which
mimics a low frequency stimulation
Advantages
Alternating sinusoidal currents with frequencies exceeding 1 KHz penetrate the skin easier due to reduced skin impedance
SHORT PULSE DURATION
Beat frequency
amplitudes of two currents summate in the deeper tissues, bypassing the superficial sensory nerves
can be selected that is similar to other waveforms for muscle strengthening and pain reduction
IFC Beat Frequency range
1-200 beats per second
elicits the therapeutic response
Beat Frequency Calculation
Channel 1- 4000 HZ
Channel 2- 3900 Hz
Beat Frequency: 100 bps
IFC Concentration Location
concentrated at the point of intersection, deep in tissues, between the electrodes
Mechanism
IFC reaches greater depths over a larger volume of tissue than other forms of stim
increases circulation
Advantahes
Safe and effective alternatives to pain control medications
non addictive and minimal side effects
patients can mange their own pain
Therapeutic Effects
induce analgesia
produce muscle contraction
reduce edema
Clinical Application: Management of:
pain edema inflammation urinary incontinence muscle weakness
Painful conditions treated by IFC
back pain arthritis strains and sprains neuralgia reflex sympathetic dystrophy shingles DJD interstitial cystitis
Bipolar/ Premod
results from the interference within the machine circuitry of 2 medium frequency sinusoidal currents with different frequencies
2 Pad Placement
Quadipolar IFC
2 currents intersect at 90 degrees from each other, the max resultant amplitude of the current field is halfway between these 2 lines of current
Automatic Vector Scan
scan= amplitude modulation of input currents
electrical field roates or scans back and forth in tissues
enlarged tx field
4 electrodes
Sweep
Modulation of frequencies of input currents
results in modulated beat frequencies
prevents accommodation