Hydrotherapy and Contrast Baths Flashcards
What is bouyancy
The ability to disperse water to stay afloat
What is Archimedes’ principle
An object that is immersed in water experiences an upward thrust equal to the weight of the water displaced
In water are upward or downward movements assisted
Upward movements
In water are upward or downward movements resisted
Downward movements
What is specific gravity
The measure of an objects density in g/cm3
What is the specific gravity of pure water at 4 C
1.00 g/cm
If an object has a specific gravity above 1.00 g/cm3 will it float or sink
Sink
If an object has a specific gravity below 1.00 g/cm3 will it float or sink
Float
What is a person with inflated lungs specific gravity
0.974 g/cm3
What is unity
Specific gravity of 1.00 g/cm3
What is the center of bouyancy
Reference point that only pertains to that segment of the body immersed in water
Is the rotary component of gravity compressive or distractive
Distractive
IS the rotary component of bouyancy compressive or distractive
Compressive
Where is the center of bouyancy applied
The center of mass of the object
What does changing the center of bouyancy do
Changes the MA of the exercise
What is hydrostatic pressure
Pressure exerted by the water on the immersed part
What is Pascal’s Law
When an object is immersed in a fluid at rest the fluid will exert equal pressure on all surfaces of the object
What happens to hydrostatic pressure as you go deeper into the water
It increases
Is it easier or harder to breath the deeper you go
Harder because the hydrostatic pressure is higher
After 18 feet of diving while scuba diving do you have to do
Pause to let the body equalize the pressure
What movement speed causes less and more resistance in water
More: Moving faster
Less: Moving slower
What is viscosity
The degree to which a fluid resists flow
What is viscosity due to
The cohesive forces present between molecules
True or False:
The viscosity of water tends to resist movement in all directions
True
How does increasing the temperature effect viscosity
It decreases viscosity by relaxing the cohesive forces of the molecules
What temperature what is easier and harder for exercising
Easier: Warmer water
Harder: Colder water
What are the physiological effects of hydrotherapy (6)
- Cleansing effects
- Musculoskeletal effects
- Cardiovascular effects
- Respiratory effects
- Renal effects
- Psychological effects
What are the cleansing effects of hydrotherapy (5)
- Treatment of open wounds
- Pressure
- Debriding agent
- Cleansing agent
- Can add products to water to improve cleansing power
How does the pressure effect cleansing
Softens and removes debris
How does a debriding agent effect cleansing
Removes endogenous agents
How does a cleansing agent effect cleansing
Remove exogenous waste
What are the products you can add to water to improve cleansing power (2)
- Antimicrobials
2. Surfactants
What do surfactants do
Decrease surface tension
What is nonimmersion cleansing (2)
- Water picks
2. Lavage
What are the musculoskeletal effects of hydrotherapy (4)
- Decreased weight bearing
- Strengthening
- Slowed bone density loss
- Less fat loss than with other forms of exercise
Why is there less fat loss with hydrotherapy
Due to the decreased resistance
What are the cardiovascular effects of hydrotherapy (1)
- Increased venous circulation
What does increasing the venous circulation do (3)
- Increases cardiac volume
- Increases cardiac output
- Decreased heart rate, systolic blood pressure, and VO2 respone to exercise
What are the respiratory effects of hydrotherapy (3)
- Decreased vital capcity
- Increased work of breathing
- Decreased exercise induced asthma
What are the renal effects of hydrotherapy (2)
- Diuresis
2. Increased sodium and potassium excretion
What is diuresis
Increased production of urine
What are the psychological effects of hydrotherapy (2)
- Relaxation
2. Invigoration
What temperature creates relaxation and invigoration
Relaxation: Warmer water
Invigoration: Cold water
What are the indications for hydrotherapy (5)
- Subacute/chronic soft tissue injuries
- Shortened tissues, contractures, and scars
- Arthritis
- Open wounds
- Muscle weakness
What are the therapeutic effects of hydrotherapy for subacute/chronic soft tissue injuries (5)
- Decreases swelling
- Hastens healing
- Decreases pain/spasm
- Increases ROM
- Increases strength
What property of water decreases swelling, hastens healing, decreases pain/spasm, increases ROM, and increases strength
- Decreases swelling= Pressure
- Hastens healing= Thermal
- Decreases pain/spasm= Thermal
- Increases ROM= Bouyancy and thermal
- Increases strength= Bouyancy and pressure
What are the therapeutic effects of hydrotherapy for shortened tissues, contractures, and scars (3)
- Causes relaxation
- Increases extensibility of nonelastic tissues
- Softens scar tissue
What property of water causes relaxation, increases extensibility of nonelastic tissues, and softens scar tissue
- Causes relaxation= Thermal and psychological
- Increases extensibility of nonelastic tissues= Thermal
- Softens scar tissue= Fluidity and thermal
What are the therapeutic effects of hydrotherapy for arthritis (3)
- Increased joint mobility
- Decreased pain
- Increases ROM
What property of water causes increased joint mobility, decreased pain, and increases ROM
Thermal and bouyancy for all 3
What are the therapeutic effects of hydrotherapy for open wounds (2)
- Cleanses and debrides
2. Increases circulation
What property of water causes cleansing and debridement and increases circulation
- Cleanses and debrides= Fluidity and pressure
2. Increases circulation= Thermal and pressure
What are the therapeutic effects of hydrotherapy for muscle weakness (2)
- Increased ROM
2. Increased strength
What property of water causes increased ROM and increased strength
- Increased ROM= Bouyancy and anti-bouyancy
2. Increased strength= Pressure
What are the contraindications for hydrotherapy (6)
- Cardiac dysfunction
- Respiratory dysfunction
- Decreased thermal sensation
- severe PVD diabetic arterial sclerosis
- Surface infections
- Acute rheumatoid arthritis
What is the rationale for not using hydrotherapy for cardiac dysfunction
Heart cannot adapt to changes needed for thermal homeostasis adjustment
What is the rationale for not using hydrotherapy for respiratory dysfunction
Inability to resist hydrostatic pressure, tolerate heat, or both
What is the rationale for not using hydrotherapy for decreased thermal sensation
Inability to report overheatting or overcooling
What is the rationale for not using hydrotherapy for severe PVD diabetic, arterial sclerosis
Contraindications for heat avoid temps above 95 F
What is the rationale for not using hydrotherapy for surface infections
Infections may spread to other areas or cross contaminate via water
What is the rationale for not using hydrotherapy for acute rheumatoid arthritis
Contraindications for heat
True or False:
Contrast baths are a form of infrared modality emitting electromagnetic radiation
True
Are contrast baths used for superficial or deep heating and cooling
Superficial
What is the maximum depth of penetration of heating and cooling
1 cm
Contrast baths use which type of heat transfer
Conduction
What is a contrast bath
Immersion of a part of the body into baths in which the temperature of the water alternates between warm and cold
What is the primary goal of contrast baths
Vascular exercise
What is another potential goal of contrast baths
May promote pain relief and desensitization
How is a contrast bath a vascular exercise
Alternate dilation and constriction of local blood vessels
True or False:
Contrast baths stimulate peripheral circulation which may stimulate the healing process in damaged tissues
True
What are the physiologic responses to contrast baths (2)
- Vasoconstriction and vasodilation of superficial blood flow
- Edema is decreased
What are the indications for contrast baths (5)
- Impaired venous circulation
- Subacute or chronic traumatic and inflammatory conditions
- Chronic edema
- Sinus or congestive headaches
- Hypersensitivity due to reflex sympathetic dystrophy (RSD) and complex regional pain syndrome (CRPS)
True or False:
Contrast baths may be used during the transition period between acute and subacute
True
What are the contraindications of contrast baths
The same as hot and cold therapy
True or False:
Whirlpools are a form of infrared modality emitting electromagnetic radiation
True
Are whirlpools used for superficial or deep heating and cooling
Superficial heating and cooling
What is the depth of penetration for whirlpools
1 cm
What type of heat transfer does whirlpool use (2)
- Conduction
2. Convection
True or False:
Whirlpools are a mechanical modality used for debriding open wounds
True
What is a whirlpool
A tub of water which is agitated by an electric turbine made of stainless steel or acrylic material that comes in many shapes and size which is used for heating
What are the types of whirlpools (2)
- Extremity tanks
2. High-body and low-body tanks
What is an extremity tank used for
Immersing distal extremity
What is a high-body and low-body tank used for
Immersing larger body parts of the extremities as well as immersion up to the waist
What are the therapeutic goals for whirlpool (5)
- To debride open wounds
- Same as for those of other superficial heating modalities
- Same as for those of other superficial cooling modalities
- To provide a medium for therapeutic exercise
- To reduce pain
What are the physiologic effects of whirlpools (3)
- Increases hydrostatic pressure
- Moistens and softens tissue for debridement
- Agitation effects
What are the agitation effects of whirlpools (5)
- Provide phasic stimuli to skin afferents
- Increase hydrostatic pressure further
- Provide a means of grading exercise
- Decrease the thermal gradients within the water
- Remove debris and necrotic tissue and decrease bacterial load
What are the indications for whirlpool (4)
- Infected/dirty open wounds
- Subacute or chronic inflammatory conditions
- Early peripheral vascular disease (PVD)
- Muscle weakness
What are the contraindications for whirlpool (2)
- Same as for other superficial heating or cooling modalities
- Venous stasis ulcers
What are the cautions of whirlpool (3)
- Be certain that the whirlpool is plugged into an outlet that is protected by a ground fault circuit interrupter (GFCI)
- When using a warm whirlpool for large body area, monitor for signs of faintness or fever
- Monitor for signs of patient becoming seasick from the motion of the water
How do you combat seasickness
Drape a sheet over the whirlpool
What temp is very hot
40-43.5
What temp is hot
37-40
What temp is warm
35.5-37
What temp is neutral
33.5-35.5
What temp is tepid
27-33.5
What is a hubbard tank
A butterfly shaped whirlpool designed so that a patient may be immersed in a recumbent position
What is the goal of a hubbard tank
Deliver heat or cold to a large portion of the body to allow for “un-weighted” exercise