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Flashcards in Hydrotherapy Deck (71)
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1

hydrotherapy comes from words

“Hydro”
“Therapeia”

2

Physical properties of water:

Specific heat
Thermal conductivity
Buoyancy
Resistance
Hydrostatic pressure

3

Specific heat

Amount of energy needed to inc temp of a given weight of material by a given no of degrees
j/g/deg celsius

4

Thermal conductivity

Ability of material to transfer heat through conduction
(cal/sec)/(deg celcius/cm)

5

Water = specific heat: ? ; thermal conductivity: ?

Water = specific heat: 4.19 ; thermal conductivity: 0.0014

6

Air = specific heat: ?; thermal conductivity: ?

Air = specific heat: 1.01; thermal conductivity: 0.000057

7

Water: air ratio => specific heat: ? ; thermal conductivity: ?

Water: air ratio = specific heat: 4.14 ; thermal conductivity: 24.56

8

very cold to cold

0-18 ℃/32-64℉

9

Cool: acute inflammation

18-26 ℃/64-79℉

10

Tepid: exercise, acute inflammation if can’t tolerate cold

26-33 ℃/79-92℉

11

Neutral warmth: open wounds, medically-compromised pts, dec. tone

33.5-35.5 ℃/92-96℉

12

mild warmth: inc. mobility of burns

35.5-37℃/96-99℉

13

hot: pain control

37-40℃/99-104℉

14

very hot: inc. tissue extensibility, chronic conditions

40-43℃/104-110℉

15

should not be used

>43℃/>110℉

16

Buoyancy

Archimedes’ principle: When a body is immersed in fluid at rest, it creates an upward thrust equal to the amount of fluid displaced
Specific gravity: density of material to density of water ratio
If specific gravity < water, it can float in water

17

specific gravity of water

1

18

specific gravity of salt water

1.024

19

specific gravity of ice

0.917

20

specific gravity of air

0.00121

21

specific gravity of human body

0.974

22

specific gravity of subcutaneous fat

0.85

23

someone with more subcutaneous fat will find it ---- to float in water

easier

24

Resistance

d/t viscosity of water
Resistance to flow/thickness
Adhesion of molecules

25

The larger the surface area that moves against the water, the --- you feel the resistance

The larger the surface area that moves against the water, the more you feel the resistance

26

The faster you move, the --- you feel the resistance

The faster you move, the more you feel the resistanceq

27

Cleansing effect

Remove debris from wound
Dissolved surfactants and anti-microbials in water

28

musculoskeletal effects

assistive , dec weight bearing
d/t buoyancy

Strengthening (resistive)

Effects on bone density loss
It’s easier for patients to move
Places stress on bones
Prevents bone density loss

Less fat loss

29

cold effects

Decreases metabolism
Pain relief
Inflammation control

30

warm effects

Relaxes muscle
Increases flexibility
Improves circulation
Increases tissue extensibility