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DPT 623 Physical Agents > Lasers and Light > Flashcards

Flashcards in Lasers and Light Deck (30)
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1

Frequency and wavelength are ________ proportional to each other.

Inversely

2

Monochromatic

single wavelength

3

_____-______ electromagnetic radiation can be used for therapeutic medical applications.

Lower frequency

4

When is electromagnetic radiation greatest reaching the body?

Energy output is high, source is close to patient, beam is perpendicular to surface of skin

5

Clinical effects of electromagnetic radiation are determined by the radiations _______ and _______.

Frequency and wavelength

6

Which ranges can frequencies of clinical electromagnetic radiation be in?

IR, visible light, UV, shortwave, or microwave

7

Which ranges can be used to heat deep tissues?

Shortwave and microwave energy

8

Which types of electromagnetic energy causes non thermal effects?

UV radiation, low levels of pulsed diathermy or light

9

The first laser was made using _____ as the lasing medium.

Ruby

10

____ ______ introduced the concept of stimulated emission.

Albert Einstein

11

Light can stimulate ___ and ___ production within cells.

ATP and RNA

12

Laser and light therapy is also thought to enhance tissue healing by promoting _____ ______, likely by stimulating production of mRNA that codes for procollagen.

collagen production

13

Much like UV light from the sun, therapeutic laser light in the wavelengths of 405-670 nm (visible red to blue) can also ____ bacterial growth. (cause, or inhibit?)

inhibit

14

Some authors report that laser light can induce vaso_____, particularly of the microcirculation.

dilation

15

The increased activation of nervous tissue by laser light appeared to be more pronounced with which type of laser light? (red, blue, or IR)

red

16

Studies, review articles, and metaanalyses have be published concerning the use of (low or high)-level laser and light therapy to promote the healing of chronic and acute wounds in humans and animals.

low

17

True or False:
Laser and light therapy is used for the management of pain and dysfunction associated with arthritis?

True

18

True or False:
Laser and light therapy should NOT be used to effect lymphedema or modulate inflammation.

False

19

True or False:
Ongoing studies suggest an impact of laser light irradiation on nerve conduction, regeneration, function, and some other neurological conditions.

True

20

Many studies have found that laser and light therapy may (reduce, or cause) the PAIN and disability associated with a wide variety of neruromusculoskeletal conditions.

reduce

21

Both clinician and patient should wear _______(googles, mask, gown) during laser treatment, and the_______(googles, mask, gown) should be marked witht he range of wavelengths they block

goggles, goggles

22

Laser and light therapy _______(increase, decrease) blood flow and cellular energy production. These effects may_______(increase, decrease) the growth rate of metastasis of malignant tissue.

increase, increase

23

Lasers and light should not be applied to areas that have recently been exposed to ______(radiotherapy, heat, cold) because______(radiotherapy, heat, cold) increases tissue susceptibility to malignancy and burns.

radiotherapy, radiotherapy

24

Laser and light therapy are contraindicated in hemorrhaging regions because this intervention may cause_____(vasodilation, vasoconstriction) and thus______(increase, decrease) bleeding.

vasodilation, increase

25

True or false:
Light and laser therapy to the are of the thyroid gland can alter hormone levels and result in changes in serum concentrations of luthenizing hormones, follicle-stimulating hormone, adrenocorticotropic hormone, prolactin, testosterone, cortisol and aldosterone.

True

26

True or false:
The effects of light and laser therapy on fetal development, fertilization and epiphyseal plate growth or closure are not known.

True

27

which one does not belong in the list?
Precautions include:
low back pain during pregnancy
epiphysal plates in children
impaired sensation, mentation
photobia
pretreatment with photosensitizers
cryotherapy

cryotherapy

28

Other potential hazard of laser or light therapy is
______( burns, bruise)

burns

29

Red light is suitable for treating______(deep, superficial) tissue.

deep

30

Blue light is suitable for treating______(deep, superficial) tissue.

superficial