Laser Flashcards
What does laser stand for?
Light Amplification by Stimulated Emission of Radiation
Unique properties of laser (2)
- monochromatic
2. coherent and directional (// waves)
single frequency/wavelength and color
monochromatic
Indications for laser (5)
- Trigger points
- Edema
- Wound
- Scar
- pain
laser contraindications (3)
- 4-6 month radiotherapy
- hemorrhaging
- malignancy
laser precautions (4)
- pregnancy
- impaired sensation
- epilepsy
- sensitivity to light
laser effects cells via their interaction with…
intracellular chromophores
photon emissions are caused by an electron of an active medium jumping from…
higher to lower energy state
laser physiological effects (5)
- increase ATP
- increase collagen production
- stimulate macrophages
- vasodilation
- increase nerve conduction
What does increasing collagen entail? (2)
- tissue healing
2. reduced pain
what does stimulation of macrophages entail?
inhibits bacterial growth
what are the 3 types of diodes?
- LED
- SLD
- laser
2 techniques used in laser therapy?
gridding and scanning
energy density (J/cm2) for acute/superficial conditions
lower dose
energy density (J/cm2) for chronic/deeper conditions
higher dose
Trigger point parameters
sup: 1-3 J/cm2
deep: 1-2 J/cm2
Edema parameters
acute: 0.1-0.2 J/cm2
sub-acute: 0.2-0.5 J/cm2
Wound healing (superficial) parameters
acute: 0.5-1 J/cm2
chronic: 4 J/cm2
wound healing (deep) parameters
acute: 0.05-0.1 J/cm2
chronic: 0.5-1 J/cm2
Laser tx duration
3-30 min based on total dose
for laser tx, joint should be placed in…
open packed position
cold is applied ______ laser to _______ the amount of energy removed from the area
before; reduce
heat is applied ________ laser to _______ the amount of energy removed from the area
after; increase
