Diathermy Flashcards
The ability of a diathermy device to raise tissue temp depends on the device’s
Power output
The frequency of long wave daithermy is
300-30 m
Two types of shortwave diathermy
Electric field and magnetic field
Diff btw swd and mwd
Mwd has a higher frequency and shorter wavelength than swd i.e a higher intensity of energy is delivered to the tissues
Thermal effects will not penetrate as deep as swd
Can be used to treat a more focused area of the body than SWD can provide
Types of diathermy
Short wave long wave and micro wave
What is the wavelength and frequency for showrtwave diathermy
Wavelength- 7.5 , 11 and 22
Frequency- 13.56,27.12,40.68
Pulses swd is dependent on
Tissue conductivity Charged molecules Dipolar molecules Non- polar molecules Electrical field magnitude
In swd what is the method for heat transfer
Conversion
Physiology effect of swd
Releif pain Gives nutrition to the affected area Increased blood circulation Produces heat Removes waste products
Heating with swd
Dose 1 is the lowest- no sensation of heat
Dose2- low ( mild heating sensation)
Dose 3. - medium- moderate or pleasant healing sensation
Dose4- heavy- vigorous heating with pain threshold
Pulsed swd
They are devices that deliver radio frequency waves to the patient at a very low intensity
Parts of the body in low subcutaneous fat
Is best treated
In capacitor electrodes which arrangement is best for treating deeply places structures
Also best foe extremities
Contraplanar arrangement
Which arrangement for capacitor electrodes is best for neck back and pelvis and also for more superficial treatment
Coplanar
What is eddy current
Flow of higher conductivity causing heating in these tissues
