Practice Quiz

PTA Physical Therapy Assistant

Category - Therapeutic Modalities

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Which of the following factors determines the quantity of ions transferred into the tissue during iontophoresis?
  1. Intensity of the current
  2. Duration of treatment
  3. Concentration of ions
  4. All of the above
Explanation
Answer: D - All of the above. Intensity of the current, duration of treatment, concentration of ions are the factors that determine the quantity of ions that is transferred into the tissue during iontophoresis.

Greater intensity of current will increase the transfer. Longer duration increases the number of ions transferred. However, after some time, resistance might occur. The greater the amount of ions, the more the number of ions can be transferred.
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