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Physical Agents > Diathermy > Flashcards

Diathermy Flashcards

0
Q

Purpose is diathermy

A

Generate hear in body tissues

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1
Q

Definition of diathermy

What range of frequency is this is?

A

Heat through

Radio

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2
Q

What kHz is diathermy

What frequency length?

A

Radio waves

Long frequency long wave

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3
Q

Shortwave, microwave, and pulsed shortwave megahertz

A
  1. 12Mhz
  2. 450Mhz
  3. 12Mhz
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4
Q

Method of hear transfer for diathermy

A

Conversion

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5
Q

Which method type of diathermy is electrical field? Magnetic field?

A

Capacitive method

Inductive method

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6
Q

Minimum distance between electrode and body part

A

3cm

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7
Q

Proper positioning of what two parts of machine to provide effective hearing and absorption of thermal energy

A

Plate and guard

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8
Q

Molecules do what motion during tissue heating?

A

Oscillation and rotation

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9
Q

Inductive or magnetic method lowers or raises impedance?

Uses what type is electrodes? (2)

A

Lowers

Drum and sleeve

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10
Q

5 guidelines for electrodes

A 
Equal size
Larger than treatment area
Equal distance, right angles to skin
No metal or sweat
Fat resists flow
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11
Q

Pulsed short wave diathermy is delivered in bursts for how many seconds?

A

20-400usec

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12
Q

During SWD is the off time or on time longer?

A

Off time

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13
Q

What kind of electrode is used during SWD?

A

Drum

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14
Q

Pulsed repetition rate range

A

1-1000hz

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15
Q

Pulse duration range how much?

A

25-400 microseconds

16
Q

Peak pulse power range?

A

100-1000 watts

17
Q

Duration of diathermy?

Acute or chronic

A

5-15 acute

10-20 chronic

18
Q

Name of device which generates microwave diathermy

A

Magnetron

19
Q

Does MWD have higher or shorter frequency and wavelength?

A

Higher frequency, shorter wavelength

20
Q

Does MWD have a thermal effect that is deeper or less than SWD?

A

Less than SWD

21
Q

Circular shaped applicators for MWD are maximum temperatures where? Rectangular applicators?

A

Periphery

Center

22
Q

Pulsed electromagnetic fields delivers high or low intensity?
Any heating effects?

A

Low

No

23
Q

How many watts for PEF?

Used for what purpose mainly?

A

1W

Tissue healing

24
Q

Is diathermy capable of producing depolarization and contraction of muscles? Why?

A

No

Wavelengths too short

25
Q

Diathermy has what kind of effects on pain?

A

Analgesic

26
Q

Diathermy promotes tissue and bone healing by increasing what? (2)

A

Temp and circulation

27
Q

What kind of diathermy is best to treat soft tissue injuries and wounds?

A

SWD

28
Q

While adjusting the SWD unit what output intensity should the machine be set to?

A

30-40%, then adjust to 50%

29
Q

Duration for SWD unit

A

15-30 min

30
Q

Frequency of treatment with SWD
Acute?
Chronic or subacute?

A

1-3 times daily for acute

Daily or every other day for chronic

31
Q

Dose 1 response and suggested use

A 
No sensation of heat
Acute injury(sprain or strain)
32
Q

Dose 2 response and suggested use

A

Mild heating

Subacute injury and inflammation

33
Q

Dose 3 response and suggested use(3)

A

Moderate or pleasant heating

Pain, muscle spasm, chronic inflammation

34
Q

Dose 4 response and suggested use (2)

A

Vigorous heating

Increased blood flow, heating collagen fibers for stretching soft tissues

35
Q

Indications for diathermy (7)

A 
Inflammatory disease (oa, ra)
Pain
Tightness
Chronic pelvic inflammatory disease
Low back pain
Limited rom
36
Q

Contraindications of diathermy (9)

A 
Metal implant
Impaired sensation
Hemorrhage
Ischemic tissue
Very acute or inflammation
Fever
X-ray exposure
Poor circulation
Obese patients
37
Q

3 precautions of diathermy

A

Near other electrical devices
Over low back or pelvis of menstruating patient
Atrophic, infected, damaged skin

38
Q

Is diathermy deeper or more superficial than other modalities
Can it heat a larger area or smaller area than US?

A

Larger

Physical Agents (9 decks)

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