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Exam And Intervention 2 > Iontophoresis > Flashcards

Iontophoresis Flashcards

1
Q

Transcutaneous delivery of medications via application of direct electrical current

A

Iontophoresis

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2
Q

Iontophoresis is based on what principle?

A

“Like charges repel”

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3
Q

Iontophoresis most commonly used to apply

A

Dexamethasone

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4
Q

Approximate penetration?

A

1-2 cm

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5
Q

Indications for Iontophoresis

A 
Analgesia
Calcium deposits
Fungal infection
Hyperhidrosis
Inflammation
Ischemia
Keloids
Muscle spasm
Myositis ossificans
Plantar warts
Scar tissue
Wounds
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6
Q

Anode drives ____ ion

Cathode drives ____ ion

A

Positive +

Negative -

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7
Q

Transport of ion through skin is enhanced by

And dependent on

A

Imposed electric field

Ionic charge + weight

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8
Q

Electric repulsion of ions

A

Electromigration

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9
Q

ES increases porosity of superficial skin

A

Electroporation

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10
Q

Human skin has net (-) charge

Direction of ionic flow from…

A

Anode to cathode

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11
Q

3 mechanisms of iontophoresis

A

1) Repulsion of like charges
2) increase skin surface (pores)
3) electroosmosis

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12
Q

Movement of water and sodium toward cathode, creating stream where ions move

A

Electroosmosis

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13
Q

Pores in human skin are ____ charged.

A

Negatively

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14
Q

Routes of penetration through skin?

A

Sweat glands
oil glands
Hair follicles

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15
Q

Acidic and alkaline reactions can cause

A

Discomfort
Irritation
Burns

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16
Q

Dosage of Iontophoresis

A

40-80 mA/ minute

17
Q

For manufactured electrodes,

The size of electrode is___
And the pole is determined by

A

Fixed

Ion used

18
Q

Which electrodes are smaller?

A

Anode

19
Q

Active electrode goes over area of

A

Inflammation

20
Q

Cathode size :

Anode size:

A

.5

1

21
Q

Corticosteroid with anti-inflammatory effects

A

Dexamethasone

22
Q

Ions of dexamethasone have what polarity

Is it placed under anode or cathode

A

Negative

Cathode

23
Q

Anesthetic drug

A

Lidocaine

24
Q

Polarity and electrode of lidocaine

A

Positive

Anode

25
Q

Non-steroidal drug effective in reducing pain in lateral epicodylitis

A

Naproxen

26
Q

Synthetic opiate analgesic for post op pain,

A

Fentanyl

27
Q

Post-Tx considerations

A

Check for irritation

Evaluate Tx and frequency, effectiveness

28
Q

Frequency of Iontophoresis dependent on

A

Ion selected

Underlying condition

29
Q

Contraindications

A 
Drug allergies
Skin sensitivity
Metal
Tattoos
Cuts
30
Q

Iontophoresis should not be applied after

A

Heat
Ice
US

31
Q

Difference between phonophoresis and Iontophoresis

A

P: US, Molecular transport, creme based, via process of calcification

I: DC current, ion transport, liquid solution, repelling electric charge.

Exam And Intervention 2 (9 decks)

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