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Flashcards in Cryotherapy Deck (44):
1

What is cryotherapy used for in rehab settings (6)

1. Control inflammation
2. Control pain
3. Control edema
4. Reduce spasticity
5. Control symptoms of MS
6. Facilitate movement

2

What body systems does cryotherapy exert an effect on (3)

1. Hemodynamic
2. Neuromuscular
3. Metabolic

3

What does cryotherapy cause in the hemodynamic system

Immediate vasoconstriction of blood vessels which causes a decrease in blood flow

4

How does cryotherapy cause vasoconstriction (4)

1. Increases blood viscosity
2. Decreases release of histamine and prostaglandins
3. Smooth muscle contractions
4. Increases sympathetic adrenergic activity

5

True or False:
Blood flow will increase when cryotherapy is applied eventually

True

6

Why does blood flow eventually increase

Due to vasodilation caused by the body trying to increase the temperature of the tissue to prevent death of the area

7

What is erythema

Reddening of the skin secondary to cold application

8

What causes erythema

Increase in oxyhemoglobin concentration in the blood

9

Which way does cryotherapy cause the oxygen hemoglobin dissociation curve to move

To the left

10

What are the 4 stages of cold

CBAN

11

What does CBAN stand for

Cold (intense)
Burning
Aching
Numbness

12

What does cryotherapy do to nerve conduction

Decreases nerve conduction velocity

13

How long does it take 5 minutes of cooling to be reversed

15 minutes

14

How long does it take 20 minutes of cooling to be reversed

30 minutes or more

15

Which type of fibers are most affected by cryotherapy

Myelinated and small diameter fibers

16

Which type of fibers are least affected by cryotherapy

Unmyelinated and large diameter fibers

17

What are the effects of cryotherapy on the neuromuscular system (4)

1. Decreased nerve conduction velocity
2. Increased pain threshold
3. Altered muscle strength
4. Facilitation of muscle contraction

18

How does cryotherapy increase pain threshold (3)

1. Counter irritant via gate control
2. Sensory NCV inhibition
3. Reduced muscle spasm

19

True or False:
Isometric strength increases directly after 5 minutes of cooling

True

20

What happens to isometric strength after 30 minutes of cooling

Initially strength is decreased but after an hour it starts to increase to greater than precooling strength

21

How does cryotherapy decrease spasticity

Decreases gamma motor neuron, afferent spindle, and golgi tendon organ activity

22

How long does it take cryotherapy to reduce spasticity

10-30 minutes of cooling

23

How does brief application of cryotherapy facilitate muscle contraction

May stimulate alpha motor neurons in patients with upper motor neuron lesions for a few moments

24

What is the effect of cryotherapy on the metabolic system

Decrease metabolic rate

25

What does cryotherapy limit

Secondary injury

26

How does cryotherapy reduce secondary injury (2)

1. Metabolically
2. Chemically

27

How does cryotherapy reduce secondary injury metabolically

Lowers the amount of oxygen needed to meet or be below that of the oxygen available which decreases metabolism

28

How does cryotherapy reduce secondary injury chemically

Decreases permeability which prevents leakage of protein rich fluid into tissue

29

What are indications for cryotherapy (7)

1. Immediate care of musculoskeletal injuries
2. Edema control
3. Pain control
4. Modification of spasticity
5. Symptom management in MS
6. Emergency care for small burns
7. Limitations in ROM secondary to pain

30

What are contraindictions for cryotherapy (9)

1. Impaired circulation
2. Cold hypersensitivity
3. Raynuad's disease
4. Hypertension
5. Over regeneration of peripheral nerve
6. Paroxysmal cold hemoglobinuria
7. Cryoglobulinemia
8. Decreased cold sensitivity
9. Open wound after 40-72 hours

31

What is the maximum depth of penetration of cryotherapy

1 cm

32

What is an ice pack

Crushed ice in leak proof container generally around 30 F

33

What are commercial ice packs

Plastic filled with hydrated gel

34

What temperature are commercial ice packs stored at

0-12 F for 30 minutes minimum

35

What is more effective at lowering body temperature ice packs or commercial ice packs

Ice pack do to the phase change

36

What is ice massage

Application of cold by rubbing ice over a part of the body

37

What are cold baths/ice immersion

Placing a body part to be treated in water ranging from cold to icy temperature is varied

38

For ice immersion what is considered cool temperature

67-80 F (19-27 C)

39

For ice immersion what is considered cold temperature

55-67 F (13-19 C)

40

For ice immersion what is considered very cold temperature

32-55 F (0-13 C)

41

What are cryokinetics

Application of cryotherapy to a part so to numb the part prior to active exercise

42

What does a patient need to be able to distinguish between with cryokinetics (3)

1. Pre-existing pain
2. Ice induced pain
3. Exercise induced pain

43

What is controlled cold compression

A nylon sleeve that connects via a tube to a one gallon cooler/jug in which cool water flows from cooler to sleeve

44

What is the temperature of the water in controlled cold compression

50-77 F