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Flashcards in diathermy Deck (27)
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0
Q

What are the radio waves measurement in?

A

30khz-300khz

1
Q

What does diathermy mean
What wave range are waves in
Purpose

A

Radio frequency used to generate heat in body tissues and heat produced by resistance of tissues

2
Q
Shortwave 
Longwave
Pulsed shortwave
Plused electromagnetic fields pemf
Method of heat transfer
A

27.12 MHz
2.450
27.12
Pulsed radio frequency
Method: conversion

3
Q

Short wave types
Electrical fields
Magnetic fields ?

A

E-capacitative

Magnetic field - inductive

4
Q

Capacitative method like how to use it

A

Electrical field methods
Patient tissues are part of the electrical capacitor
Be cautious for excess heating
Distance electrode and body part minimum 3cm
Proper guarding and patient postion
Oscillation and rotation of the tissues produce heat
Use applicatior discs ethier flexible metal discs can be used as electrodes
Can be applied in 3 ways

5
Q

Inductive method how does it work

A

Use application in oscillating magnetic field “eddy”
Energy can transmitted via airwaves
Patient is in the electromagnetic produce it lowers impedance
Drum and sleeves electrodes

6
Q

Guidelines for electrodes (5)

A

Equal in size
Slightly larger than treatment area
Equal distance and at right angles to skin surface
Metal and Sweat may cause burns epsecially implants
Fat resist eletrical flow and fat is heated in a eletrical field

7
Q

Pulsed SWD properties

4

A

Intreruppted in a series of high frequency bu

8
Q
Pulse swd 
      Pulsed repetition rate
       Pulsed duration 
       Peak pulse powe
        Duration
A
-1-1000hz
Duration  25-400 microseconds
Peak pulse power 
100-1000w
Duration Of time 
20 mins (5-15 acute; 10-20 chronic)
9
Q
Microwave diathermy Properties 
What's device name (transformers) 
MWD - high or short
Shorter wavelength than swd
            (4)
Generates what
Thermal effect
A

Magnetron
MWD - has higher frequency
Generates strong eletric field and little magnetic field
Thermal effect on deeper structures less

10
Q

MWD applicators (electrodes)
Circular applicators feel heat where
Rectangular shaped applicators feel hear where

A

Circular - 4-6 maximum temp at perimeter
Rectuauglar- 4.5x5 or 5x21
Maximum temp at center

11
Q

Effects on tissue flexiblity
Does this increase with heat and prolonged LOW stretch tissue elascity that being
What have studies shown to increase

A

Ankle DF , hamstring tightness, triceps,

And yes it does yes it does

12
Q
Pulsed magnetic fields 
Delivered low or high intensity 
No heating effects 
Average power typically limited to 
What's it used for?
A

No heating effects
Low intensity
1w
For tissue healing

13
Q

Physiological effects of diathermy vey similiar to heat

A
Increase tissue temp
Dilation vaso
Decreased blood viscosity 
Increased lymphatic and venous flow 
Increase metabolism
Changes in physical properties of tissue
Muscle relaxation
Increased pain threshold
14
Q

Is diathermy effective for treating muscle strength

A

No because waves to short not capable of producing depolarization and contraction of muscles

15
Q

What is heat good for what conditions

A

Oa, ab pain, trigger points, plevic inflammatory disease, low back pain

16
Q

How does diathermy increase bone healing

A

Cirulation and increasing temp

17
Q

Non thermal effects

A

Used to treat soft tissues and wounds realated to depolarization of damaged cells

18
Q

Output meter

A

Indicates realitives output in watts

19
Q

How to prep patient

A
Choose devices
Describe effects 
Position patient comfortable
Remove all metals 
Inspect skin
Place cotton on skin
Position applicator 
Choose apporoate parameters
Tell patient not to move
Avitave device 
Tell patient if it gets to hot to tell for therapist
20
Q

Adjusting shortwave unit

Manual tuning adjust patient circuit
Set output to 30-40 percent
Adjust tuning control until power output reaches max
Then adjust to patients tolerance to 50 percent
If more than 5o is out of resonance

A

.

21
Q

Dosage is?
Duration?
Frequency of treatment
Acute? Subacute or chronic

A

Amount of enegry delivered to body
15-30 minutes
1-3 times a day for acute and daily or evey other day for sub acute or chronic conditions

22
Q

Dose 1?
Dose2?
Dose 3?
Dose 4?

A

Dose 1 -no sensation heat low acute injuries sprains and strains
Dose 2- mild heating subacute injuries and inflammation
Dose 3- moderate or pleasant heating pain or chronic inflammation
Dose 4- vigorous heating increased blood flow heating or collagen fibers for stretching of soft tissue of

23
Q

Indications

A
Inflammatory disease (OA, RA, etc..) 
Pain 
Tightness
Chronic plevic inflammatory disease 
Trigger points 
Limited ROM
24
Q

Contraindications

A

Refer to photos

25
Q

Precautions

A

Be careful of eletrical devices
Women who are menstrauting especially low back or pelvis regions
Atrophic infected damaged skin

26
Q

When is diathermy the treatment option

A

Safety issues cost effective
Us vs. diathermy
Provides a greater depth of heating than superficial than thermal modalities
Can heat larger area more than US