LASERS HIGH YIELD Flashcards
the biggest injury happens to what organ?
the eyes
T/F, overheating is impossible or possible?
impossible due to the energy loss as the energy travels
what are the medical uses of photobiomodulation (PBM)?
acute and chronic pain
acclerates the inflammatory process
increase microcirculation
what is the mechanism of PBM?
increased cytochrome c oxidase
increased mitochondrial fsx
increased oxygen consumption
increased ATP production
how does the PBM affect the acute inflammation cascade?
cytochrome activation
ROS production
proton gradient change
*leads to angiogenesis and SOD production
what is the ultimate affect of therapy laser treatment?
reduced healing time
what is the result of immediate pain relief from laser therapy?
decrease spasm and analgesia
what is the long term effects of laser therapy?
low and high irradiance affects PNS(decreased pro-inflammatory markers like TNF and IL-IB) and CNS(increased beta endorphins)
what does the LASER acronym stand for?
light amplification stimulated emission radiation
what are the three primary properties of laser light?
monochromatic
coherent
collimated
what is the wavelength of light emitted by the laser?
650-1200 nm
what is the class of lasers we use in podiatry?wavelength?
class 3B 5-499 mW
what is the dose of laser therapy based on?
correct wavelegnth
appropriated power
appropriate target energy
frequency of treatment
T/F, increasing power applied at the skin increases the power at all tissue depths?
t
depth of penetration is determined by?
length of the wavelength
what does power determine?
the number of photons at the depth the wavelength will take it
what is the treatment time equation?
desired dosage x area/power
what are the dosing considerations?
target areas
depth and size
nature of problem
tissue type
goal of treatment
what are the variables of higher power?
rate
penetration
fast pain relief
more power
biphasic dose principle is based on what principle?
Arndt-schultz principle
eqn for energy measured in joule? what is power measured in?
power x time
watts (joule/time)
name this type of dosing:
cells in oxidative stress are more apt to respond to energy levels that stabilize membrane and improve metabolism
acute dosing
name this type of dosing:
targeting nerves directly with higher irradiance=analgesia
decreased risk of rebound pain and swelling
chronic dosing
how is laser therapy delivery?
grid like pattern/paint the tissue
