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Electro & Bio Physiological Agents > Introduction to Electrotherapy > Flashcards

Flashcards in Introduction to Electrotherapy Deck (47)
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1

Thermal Agents

Cold packs, ice, vapocoolant
cold bath/whirlpool
hot packs, paraffin, fluidotherapy

2

Mechanical Agents

mechanical traction
compression stockings/bandages

3

Electromagnetic Agents

TENS , NMES

4

Electromagnetic & Thermal

UV
IR
Laser

5

Mechanical and Thermal

Hydrotherapy & Ultrasound

6

Cathode

gains electrons
-negatively charged
-black cord

7

Anode

loses electrons
-positively charged
-red cord

8

polarity

relative charge

9

voltage

energy associated with movement of charge (volts)

-potential energy b/w 2 points

10

current

rate of movement of charged particles in a conductor (I or amps)

transfer of energy that causes physiological change

11

resistance

defines the ease of movement within the conductor

-relationship b/w voltage and current

12

Ohm's Law

I = V/R

V= I x R

as R increases, V needs to increase to maintain constant I

13

good conductors

muscles, nerves, blood

14

poor conductors

skin, adipose tissue

15

conductors

allow charged particles to move easily in an electrical field

16

resistance can be manipulated for our purpose through (decrease)

gels, sponges, wet gauze

17

resistance can be manipulated for our purpose through (increase)

lotions, oils, dry skin & callus

18

capacitance

property that allows the ability to store or release a charge

19

impedance

(can be overcome with)

takes into account resistance and capacitance

can be overcome with higher frequencies (AC current)

20

Direct Current

continuous uninterrupted flow of particles

continuous as long as circuit is closed

wound healing

21

Alternating Current

uninterrupted bi-directional flow of particles

(large muscles = russian stim)

22

alternating current effect on polarity

polarity reverses as electrons move in one direction and then in reverse

23

pulsed current

uni or bi-directional flow interrupted for a period of time

each pulse is an isolated electrical event

24

pulse

isolated electrical event
can be uni- or bidirectional

25

pulse duration

time to complete one pulse

which nerve fibers are you trying to stimulate?

26

interpulse interval

time between pulses

27

period

pulse duration + interpulse interval duration

28

frequency

the number of pulses each second

29

rise time

time for one pulse to reach its peak amplitude

30

fall time

time for one pulse to return to baseline