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35 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What are the thermal effects of diatheramy?
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Pain control, Increased ROM and decreased joint stiffness, accelerated healing and psoriasis and dermal ulcers
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What are the clinical indications for the use of nonthermal PSWD?
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Control pain and edema, wound healing, nerve and bone healing
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True or false: heating with an inductive coil is known as heating by the magnetic field method.
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True
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Name the effects of UV radiation.
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Erythema production and Vitamin D synthesis
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What dose of UV produces some mild desquamation (peeling of the skin)?
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First-degree erythema
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True or False; ionizing radiation cannot break molecular bonds.
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False, they can break molecular bonds
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What the effects of cold laser?
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Cellular effects, altered nerve conduction and regeneration, vasodilation
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How is laser light different from other light?
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Laser light is monochromatic, coherent, and directional
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What are the contraindications for the use of laser therapy?
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Eyes, over endocrine glands, hemorrhaging regions, and within 4-6 months after radiotherapy
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What are the clinical indications for the use of cold laser?
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Wound and fracture healing, MS disorders and pain.
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Describe the attributes of EMR.
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EMR is composed of electric and magnetic fields that are orientated perpendicular to each other.
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Does EMR require a medium?
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No
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What is the physiological basis why UV is used to treat Psoriasis?
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UV can inactivate cell division, inhibit DNA synthesis, and inhibits mitosis of hyperproliferating epidermal cells
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Page 375
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What are the contraindications for the use of Thermal-level Diathermy?
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Metal implants and pacemaker, Malignancy, Pregnancy, Eyes, testes, growing epiphyses
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True or False; The effects of UV are considered nonthermal.
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TRUE
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Page 373
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What band of UV light penetrates deepest?
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UVA
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page 374
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What three factors allow for the greatest penetration of UV light?
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High intensity, longest waveform and lowest frequency
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page 374
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What are the contraindications of UV?
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Eyes, skin cancer, Pulmonary tuberculosis, cardiac, kidney or liver disease, systemic Lupus, fever
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True or False: The intensity of EMR is greatest when the source is placed perpendicular to the surface of the skin.
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TRUE
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Page 373
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What frequency band of UV is associated with wound healing?
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UVC
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Page 376
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What are the mechanisms by which UV can enhance wound healing?
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Enhanced epithelialization, destroys bacteria, accelerates granulation tissue formation, increases blood flow and increases vitamin D production by the skin
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What intensity does cold laser output?
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50 mW/CM2
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Page 384
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What range of intensity of laser light is recommended for acute conditions?
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.05 to 1 J/cm2
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Page 384
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What range of intensity of laser light is recommended for chronic conditions?
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40 J/cm2
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Page 384
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What is the most common frequency used in short wave diathermy?
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27.12 MHz
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Page 388
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What key factor determines if a diathermy device will increase tissue temperature?
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The amount of energy absorbed by the tissue
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Page 389
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What kinds of tissue absorb the most energy given off by diathermy?
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Tissues with high electrical conductivity
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Page 390
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What are some examples of tissues with high electrical conductivity?
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Muscle and synovial fluid
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Page 390
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What are some examples of tissues with low electrical conductivity?
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Fat, bone, and collagen
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Page 390
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Name some advantages that Diathermy has over superficial heating agents.
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It can heat deeper, it can heat larger areas, less risk of bone burns and less labor intensive then US
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Page 389
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What device is used to deliver microwave diathermy?
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Magnetron
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What are the thermal effects of diathermy?
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Vasodilation, increased rate of nerve conduction, elevation of the pain threshold, acceleration of enzymatic activity and increase soft tissue extensibility.
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What are the non-thermal effects of diathermy?
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Increased microvascular perfusion and altered cell membrane function and cellular activity.
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Since diathermy gives off electromagnetic radiation, what is the recommended distance that the clinican should be from the machine when applying continuous diathermy?
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1-2 meters
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Page 395
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True or false: diathermy should not be used in the presence of other electronic or magnetic equipment.
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True
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