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Flashcards in High voltage pulsed currents Deck (16):
1

What are high voltage pulsed currents?

A direct current capable of penetrating the skin barrier and stimulating deep tissue with little or no net ionic flow

2

What is the difference between HVPC and galvanic current?

Has a short wave duration and pulse interval

3

What are the characteristics of HVPC?

- Twin peaks
- Monophasic
- Short pulse duration
- Pulse rate 1-200 Hz
- Voltage greater than 100 volts
- Can use either negative or positive polarity

4

What are some advantages of HVPC?

- Breaks down the skin barrier
- Allows deeper penetration to the target tissue higher current density
- Avoids skin vasodilation and skin irritation from increased temperature or potential chemical build up

5

What is the current density?

The measure of effectiveness of HVPC

6

How if the amount of current flow regulated?

The frequency of the current; the higher the frequency the greater the current density

7

What are the different types of pulse patterns?

- Continuous
- Reciprocate
- Surge

8

What is a continuous pulse pattern?

Repetitive sequence for the duration of treatment

9

What is a reciprocate pulse pattern?

The active electrodes alternate on and off (1:1 ratio) and the dispersive electrode is the third pas in the circuit

10

What is a surge pulse pattern?

The amplitude of the subsequent pulses increases gradually until the desired amplitude is attained

11

What are the different types of electrodes?

- Active
- Dispersive

12

What is a monopolar electrode placement?

Treatment for wound healing; large area requires minimum 2 electrodes of unequal size one becomes active

13

What is a bipolar electrode placement?

For muscle contraction of chronic pain requires electrodes of the same size in proximity to treatment area

14

What are the effects of negative polarity?

- Increases vascularity of tissue
- Stimulate fibroblastic growth and collagen production
- Germicidal
- Prevents infection
- Dissolves blood clots

15

What are some electrode placements for pain modulation?

- Over painful site
- Over nerve trunk
- Paraspinally

16

What are some indications for HVPC?

- Promote injury recovery
- Re-educate muscle
- Modulate pain
- Edema management