Diathermy Flashcards
What is diathermy
high frequency electromagnetic energy
What type of generators is diathermy
short wave and microwave
What is the MC type of unit
shortwave diathermy
who regulates frequencies
FCC
MC wavelength and frequency
11 m wave
27.12 MHz
Which is the safest unit
shortwave
what is a dipole rotation
dipolar molecultes rotate (water)
thermal effect of diathermy
iconic oscillation is what
where ions in solution oscillate back and fourth
What is a capacitor electrode
produces electrical field
what is an induction electrode
produces magnetic field
what has the greatest absorption in tissues with electrolyte and water content (adipose)
capacitive technique
What type of electrodes does capacitive technique have
plates and pads
What type of environment is best for inductive technique
high electrode, high dipole tissue
what type of electrodes does inductive technique have
drum, cables, garment
what is the arndt schultz law
dose vs response
what is the grotthuss draper law
absorption vs therapeutic effect
inverse square law shows
dose vs divergence
what is the cosine law
reduced energy as angle is increased
CSWD
continuous short wave diathermy- less common
PSWD
pulsed short wave diathermy- more common
Pulsed wave diathermy
increased healing
cellular stimulation
indications for diathermy (5)
OA neck/back pain ankle pain dermal wounds MSK injuries
contraindications for diathermy (9)
loss of sensation electronic implants surgical metal cancer pregnant hemorrhage ischemic areas eyes open growth plates
risks (4)
preggos cant opperate
copper IUD
other patients (10ft away)
mentally confused patients
