Heat and Cold Flashcards
Conduction
Heat transfer by direct contact; Heat, cold
Convection
Transfer by movement of air, liquid; Fluidotherapy, whirlpool
Conversion
Heat transfere by energy conversion; Ultrasound, electrical, chemical
Radiation
Radiant energy moves through air to heat object; Infrared lamps
Evaporation
Absorption of energy resultiong from conversion of a liquid to a vapor state; Vapocoolant ways
Effects of superficial Heat
Metabolic: increase
Vascular: Vasodilate
Neuromuscular: increase
Tissue extensibility: increase
Heat Implications
Pain control (short term)
Increase ROM decrease Jt stiffness
Accelerated healing
Specific app (infrared for psoriasis)
Heat contraindications
Malignancy
Recent/potential hemorrhage
impaired sensation/mentation
Infrared irradiation of the eyes
Heat precautions
Acute injury/inflammation
Impaired circulation/ poor thermoregulation
Cardiac insufficiency
Presence of metal implants (jewelry)
Over an open wound
Over area where counterirritants have been applied
Demylinated nerves
Heat adverse reactions
Burn
Fainting
Bleeding
Effects of Cold
Hemodynamic: Vasocontriction
Neuromuscular: Decrease
Metabolic: Decrease
Cold Implications
Inflammation control Edema control Pain control Decrease spasticity Symptom management of MS Facilitate muscle contraction Cryostretch
Cold Contraindications
Cold hypersensitivity Cold intolerance Cryoglobulinemia Paroxysmal cold hemoglobunuria Raynaud's disease Over regenerating peripheral nerves Area of compromised circulation
Cold Precautions
Over superficial main branch of a nerve Hypertension Over an open wound Impaired mentation/sensation Very old/young
Cold Adverse RXN
Tissue death Nerve damage Reflex vasodilation Hyperemia Exacerbation of systemic disease Cold uticaria
