light therapy Flashcards

1
Q

what happens if light hits the air

A

it loses its strength

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2
Q

name for intensity

A

jules

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3
Q

name for power

A

watts cm2

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4
Q

standard tx parameter

A

3 jules takes 15 sec

tx time 1-5 mins max

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5
Q

what determines length of tx

A

power

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6
Q

wavelength determines what?

A

depth of penetration

absorbtion of light

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7
Q

other names for light therapy

A

LLLT
phototherapy
light therapy
monochromatic infrared energy

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8
Q

light therapy is effective for tissue repair related to

A
skin wounds
ulcers
ligaments
tendon ruptures
bone and dental tissue
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9
Q

light ther is effective for most types of pain, such as

A
carpal tunnel 
neck & back pain
shingles
tmj pain
post herpetic neuralgia
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10
Q

light ther does what to metabolism

A

increases it

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11
Q

light ther promotes

A

inflammation- speeds up the process
fibroplasia- increase insize & number of fibroblasts
neoangionesis- formation of new blood cells
collagen synthesis

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12
Q

relative contraindications

A

cancer
direct irradiation of the eyes
tx of pts w/idiopathic photophobia or abnormally high sensitivity to light
pts that have been pre tx w/ one or more photosensitizers
direct irradiation over fetus or the uterus during pregnancy
“ “ of the thyroid & endocrine gland
growing children - epiphyseal plates

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13
Q

photochemistry of light

A

starts with-light (photons) applied to tissue
then-absorbtion in the mitochondria & cell membrane by chromophores
-elev of ATP synthesis
-DNA & RNA synthesis, protein synthesis, mitosis, & cell proliferation
-tissue repair

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14
Q

light must be absorbed for what to take place?

A

photochemistry

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15
Q

therapeutic window of light

A

610-1100 nm

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16
Q

blue light

A
healing light 400-500 nm
superficial tissue
acne
staph
mrsa 
strep
17
Q

red light

A

630-660 nm
promotes collagen and elastin formation
healing in wounds, cuts, scars, trigger and acupuncture points, and is particularly effective in treating infections

18
Q

near infrared

A

700-1100 nm

benefits are same as red, but penetrates deeper

19
Q

light can penetrate…

A

1-2 inches