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Direct current, also referred to as Galvanic current, is characterized by a constant flow of electrons from the anode to the cathode (for a period of greater than one second) without interruption.
DC- Polarity remains constant and is determined by the therapist based on treatment goals. Iontophoresis uses direct current.
Alternating current is characterized by polarity that continuously changes from positive to negative with the change in direction of current flow.
Alternating current is biphasic, symmetrical or asymmetrical, and is characterized by a waveform that is sinusoidal in shape.
Alternating current is used in muscle retraining, spasticity, and stimulation of denervated muscle.
Interferential current combines two high frequency alternating waveforms that are biphasic.
Interferential current attempts to reach . deeper tissues using the higher frequencies of each waveform along with the overall shorter pulse widths
Interferential uses a frequency of 50-120 pulses per second and a pulse width of 50-150 microseconds for pain management.
IFC frequency of 20-50 pulses per second and a pulse width of 100-200 microseconds should be used for muscle contraction.
Interferential current is used in pain management, muscle contraction, urinary incontinence, edema management, and migranes.
Created by: micah10