L8 Laser

Question 1

Classification of lasers

Answer 1

Class 2 & 3B = used therapeutically
Class 4 = cauterize vessels

Question 2

How does laser work?

Answer 2

laser energy is absorbed into tissue from light
lasers at certain wavelength appear to absorb into tissues better
triggers biologic changes at cellular level

Question 3

What biologic changes at a cellular level occurs due to laser?

Answer 3

stimulate mitochondria to produce ATP
stimulate RNA for collagen synthesis
alter serotonin and endorphin metabolism

Question 4

Benefits of laser

Answer 4

temporary relief of minor muscle and joint aches, pains/stiffness
reduction of muscle spasm
angiogenesis & neurovascularization
collagen synthesis
optimizing scar formation
speed recovery

Question 5

Indications of laser

Answer 5

tendinopathy
ligament/muscle strains
osteoarthritis
diabetic neuropathy
radiation related neuropathy
wounds/ulcer

Question 6

Contraindications of laser

Answer 6

active DVT
active bleeding
malignancy
pregnancy

Question 7

Precautions of laser

Answer 7

epilepsy
impaired cognition
infection
anterior neck

Question 8

Application of Laser

Answer 8

safety glasses must be worn
applicator is in contact with pts skin
keep it parallel
treat joints in open packed position

Question 9

Evidence of laser

Answer 9

Good for: OA and athletics
mixed evidence for: tendinopathy