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pmod 3rd shift > low level laser therapy > Flashcards

low level laser therapy Flashcards

1
Q

what does LASER mean

A

light amplified by stimulated emission of radiation

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2
Q

exp the concept behind laser

A

photon from amplified light hits an excited atom = radiation

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3
Q

compare normal light waves vs LASER waves in terms of wavelength

A

light - multiple wavelength

laser - monochromatic; same wavelength

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4
Q

compare normal light waves vs LASER waves in terms of allignment of waves

A

light - diverged; not parallel

laser - collimated; parallel and non-divergin

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5
Q

compare normal light waves vs LASER waves in terms of direction of waves

A

light - dispersed; multidirectional

laser - coherent; unidirectional

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6
Q

exp spontaneous absorption

A

electron moves towards outer ring = absorbs radiation

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7
Q

exp spontaneous emission

A

electron moves towards inner ring = creates radiation but not monochromatic

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8
Q

exp stimulated emission

A

electron moves towards inner ring = creates radiation but is monochromatic

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9
Q

longer wavelength = _____ freq

A

lower frequency

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10
Q

shorter wavelength = _____ freq

A

higher frequency

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11
Q

longer wavelength and lower freq = _____ penetration

A

DEEP; IR light - 2-4 cm

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12
Q

shorter wavelength and higher freq = _____ penetration

A

superficial; red light - few mm

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13
Q

what is power

A

rate of energy flow

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14
Q

unit for power

A

mW

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15
Q

what is power density

A

amount of power per unit area

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16
Q

unit for power density

A

mW/cm^2

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17
Q

maximum power density

A

100 mW/cm^2

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18
Q

compare LLLT and HLLS in terms of OSHA classification

A

LLLT - 3B

HLLS - 4

19
Q

compare LLLT and HLLS in terms of single diode power

A

LLLT - ≤ 500 mW

HLLS - > 500 mW

20
Q

compare LLLT and HLLS in terms of use

A

LLLT - therapy

HLLS - surgery

21
Q

compare LLLT and HLLS in terms of physiologic effect

A

LLLT - Photobiomodulation

HLLS - Photothermal

22
Q

compare LLLT and HLLS in terms of therapeutic effect

A

LLLT - enhance cellular function

HLLS - cellular destruction

23
Q

what is energy

A

Energy (J) = Power (W) x Time (s)

24
Q

what is energy density or fluence

A

Energy Density (J/cm2) = Energy (J) / area of irradiation (cm2)

25
Q

therapeutic range of energy density

A

0.5 to 20 J/cm2

26
Q

discuss how LASER modulates the biological processes of the body

A

LASER light - chromophore activation - inc mitochondrial cytochrome oxidative metabolism = photobiomodulation

27
Q

discuss how LASER affects pain control

A

analgesia effect or alters NCV

28
Q

discuss how LASER affects inflammation control

A

inhibits bacterial growth

controls inflammation

promoted vasodilation of small blood vessels

29
Q

discuss how LASER affects wound healing

A

inc collagen and protein synthesis

enhanced cell metabolism - ATP and RNA

nerve regeneration

30
Q

indication of LASER

A

Dermal wounds

Tendinopathies

Myofascial / trigger points

Rheumatoid arthritis

Osteoarthritis

TMJ disorders

Carpal tunnel syndrome

31
Q

contraindications of LASER

A

over eyes

malignancy

within 4-6 months of radiotherapy

hemorrhage

over thyroid

low back or abdomen of pregnant

epilepsy

pacemakers

32
Q

precautions of LASER

A

epiphyseal plates of children

impaired sensation and mentation

photophobia

33
Q

techniques of application

A

stationary w contact

stationary w non-contact

gridding or point by point

scanning

34
Q

what is the preferred method if application

A

stationary w contact

35
Q

energy density for tissue healing

A

5-16 J/cm2

36
Q

energy density for fracture healing

A

5-16 J/cm2

37
Q

energy density for acute arthritis

A

2-4 J/cm2

38
Q

energy density for chronic arthritis

A

4-8 J/cm2

39
Q

energy density for lymphedema

A

1.5 J/cm2

40
Q

energy density for neuropathy

A

10-12 J/cm2

41
Q

energy density for acute soft tissue inflammation

A

2-8 J/cm2

42
Q

energy density for chronic soft tissue inflammation

A

10-20 J/cm2

43
Q
A

pmod 3rd shift (5 decks)

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