Interferential Stimulation

Interferential stimulation involves crossing the pathways of two unmodulated sine waves of different frequencies. The frequency of one wave is usually fixed at 4,000 Hz and the other wave is variable from 2,000 Hz to 5,000 Hz. The interferential resultant current is theoretically produced in a cloverleaf shape on a diagonal between the pathways of the two circuits. The point at which the electrical currents cross will be where the interference is the greatest. Thus, you receive the benefit of the cumulative effects of interfering waveforms.

Physiological Effects of Interferential Stimulation:

  • Increases circulation to the areas being treated.
  • Enhances the release of the endogenous opiates such as enkephalins and endorphins.

INDICATIONS FOR USE:

  • Reduction of muscle spasms.
  • Pain management.
  • Reduction of edema.

CONTRAINDICATIONS:

  • Pregnancy.
  • Cancers.
  • Cardiac pathology.
  • Infections.
  • Thrombophlebitis.
  • Pacemakers.

COMMENTS:
Interferential stimulation is commonly utilized in conjunction with moist heat or cold packs when they contribute to the therapeutic purpose.

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