Wheel of Physiotherapy: Easter Edition (CH 16) Flashcards
What is ionotophoresis?
A local transfer of substances into the skin using electrical energy
What is an advantage of administering something with ionotophoresis?
It bypasses the digestive system and isn’t as invasive as a needle
What is the main disadvantage of ionotophoresis?
It is limited to the superficial tissues (stratum corneum mostly)
What type of current is ionotophoresis?
Continuous and monophasic
How does ionotophoresis work with regard to charges?
Drug/solution polarity is matched to the polarity of the electrode, this repels the the solution away from the electrode into the skin
Does amplitude govern how far the drug penetrates?
No, rather how fast it gets there
What determines how far the drug goes after delivery?
Passive diffusion
By virtue of being direct current, what other effect does direct current on the tissue?
An electrolytic effect
What type of electrolytic product is created under the anode?
HCl
What effects does HCl have on tissue?
A sclerotic effect
What type of electrolytic product forms under the cathode?
NaOH
What effects does NaOH have on tissue?
Sclerolytic or softening effect
By virtue of producing redox products of HCl and NaOH, what also changes in the skin tissue?
pH
What concentrations of aqueous solution should be administered? Ointment?
2-5%, 1-5%
What is one way to minimize the side-effects of electrolysis?
Use a buffered electrode
