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list 3 common current uses for hydrotherapy:
- envrionment for therapeutic exercise
- environment for health maintenance exercise
- component of wound tx
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list the 7 physical properties of hydrotherapy:
- high specific heat (4x air): holds heat energy
- high conducitivity (25x air): transfers energy from body to water or vise versa
- conduction
- convection: both energy theories
- buoyancy: weight off joints, NWB or WBAT
- resistance: workout, pulling, kicking
- hydrostatic pressure: compression, pressure on intersitial spaces, increased venous return
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force experienced as an upward thrust in opposite direction of gravity is called:
buoyancy
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who discovered that an immersed body part receives an upward thrus equal to weight of fluid it is displaced in:
archimedes
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density of an object determines if it sinks or floats...determine skin or float for the following:
when water has a specific gravity of 1.0
salt water SG of 1.024:
ice SG of .917:
human body SG of .974:
adipose SG of .85:
- salt water SG of 1.024: human body will float more..
- ice SG of .917: floats (ice cubes)
- human body SG of .974:
- adipose SG of .85: more buoyant
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list 4 characteristics of the physical proptery of resistance:
- viscosity provides resistance to motion of a body in water
- resistance increases in proportion to speed
- effective rehab tool for strengthening due to varied resistance
- variable resistance and pressure of moving water valuable for wound cleansing and debridement
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pressure exerted by a fluid on a body immersed in fluid is called:
a depth of 4 ft. gives how much pressure:
- hydrostatic pressure
- a depth of 4 ft. gives how much pressure: 88.9 mmHg (22mmHg/ft) (enought pressure to over come gravity)
- similar to effects of compression devices
- promotes circulation and may help alleviate edema from venous or lymphatic insufficiency
- facilitate CV fxn: more blood to/from heart, precaution CHF or PE
- brace unstable joints
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the physiological effects of heat and cold are the same as in superficical thermal agent chapter lecture. describe the following:
hemodynamics:
metabolic changes:
modification in soft tissue extensibility:
- hemodynamics: vasodilate (hot tub)/vasoconstrict (cool tub)
- metabolic changes: increase (hot tub)/decrease cool tub
- modificiation in soft tissue extensibility: stretch out, break collagen bodns
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list the 7 physiological effects of using hydrotherapy for cleansing effects (lavage):
- softens materials and exerts pressure
- component of wound care
- hydration
- debriding/friction effects on exudate and necrotic tissues
- force of debridement dependant on flow rate
- cleans all contours
- antmicrobials and detergent
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a situation in which the area surrounding a wound retains too much moisture, thus causing it to turn white and soften is called:
macerated wounds
a contraindication of cleansing for hydrotherapy
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list the 5 physiological musculoskeletal effects of hydrotherapy:
- unloads weight bearing structures
- load sensitive joints
- reduces effects of gravity
- velocity dependent resistance
- hydrostaic pressure to increase muscdle blood flow to 100-225% (increased O2 to muscles)
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75% immersion or chest deep water decreases weight bearing by ~ 75 in LE structres
neck:
waist deep:
give an example of conditions/phase of rehab:
- neck: ~100%
- waist deep: ~ 50%
example: 50% weightless environment= RUN IN WATER
APPLY SOME STRESS, WOLFF'S LAW
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list the 7 physiological cardiovascular effects of hydrotherapy:
- primarily due to hydrostatic pressure
- pressure in distal extremities moves blood to trunk (up to 60% increase)
- increases venous return
- increased heart filling (up to 30%)
- increased myocardial contraction
- increase in stroke volume (decreased HR; beats less frequent for same blood flow)
- increased cardiac output (inc. 30%)
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cardiovasclar effects
how is HR effected for a given RPE vs land
- reduced HR for given RPE (rate preceived exertion) vs land
- does increase more if water is warm
- HR is not a good indicator of work in water
- RPE is higher for given HR in H20 than on land
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cariovascular effects
how is oxygen consumption effected for a given RPE vs land:
reduced oxygen consumption (VO2) for given RPE vs land
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list 5 physiological respiratory effects of hydrotherapy:
- work of breathing increases in water: hydorstatic pressure against rib cage
- decreased expriatory reserve volume 50%
- decrease vital capacity 6-12%
- increase work of breathing 60%
- exercise induced asthma: high humidity, absences of pollen, hydorstatic pressure, hypoventiliation, peripheral vasoconstriction
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describe why respiratory distress is a contraindication for hydortherapy:
already struggling to breath, so why put them in H2o to breath against resistance
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describe the physiological renal effects of hydrotherapy:
- increases urine production: as well as sodium/potassium excretion
- secondary to increased: renal BF and decreases in ADH
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list the 3 psychological effects of hydortherapy:
- invigorating but relaxing
- relieve anxiety
- social
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list the 3 neurologic effects of clinical application:
- proprioceptive input (especially with central deficits)
- increased safety (explore area would not typically fxn in)
- improved balance
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list the 3 clincial applications for hydrotherapy of cardiac fitness:
- allows deconditioned to exercise
- cardiac rehab
- COPD pts
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list 3 contraindications of hydrotherapy:
- maceration
- bleeding
- Dx CV disease
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