Deck 9: Shortwave Diathermy

Question 1

Which of the following are similar between shortwave diathermy and ultrasound?

A) Thermal and nonthermal effects
B) Volume of tissue treated
C) Bone's reflection of energy
D) Depth of treatment

Answer 1

A

Question 2

What type of shortwave diathermy produces heat via the dipole effect?

A) Induction field generators
B) Capacitive field generators
C) Capacitive field generators and induction field generators
D) Neither the capacitive field generators nor the induction field generators

Answer 2

B

Question 3

Which of the following accurately represents shortwave diathermy (SWD)and not microwave diathermy MWD? Select all that apply.

A) SWD uses a magnetron that produces high-frequency electromagnetic energy.
B) Magnetic as opposed to electric fields are predominant in SWD.
C) With SWD,superficial tissues are heated more than deeper tissues.
D) The radiation created by SWD penetrates the fat layer better than MWD.
E) The effects of SWD occur at only about one-third the depth that MWD effects.

Answer 3

B,D

Question 4

Continuous shortwave diathermy is typically limited to what conditions?

A) Chronic
B) Acute
C) Subacute
D) Postsurgical

Question 5

When a capacitive field generator is used,what tissue will present the most electrical resistance and thus produce the most heat?

A) Adipose
B) Skin
C) Muscle
D) Fascia

Question 6

Which are used to create nonthermal effects with shortwave diathermy treatment? Select all that apply.

A) Low average intensity
B) High average intensity
C) Short pulse duration
D) Long pulse duration
E) Low duty cycle

Question 7

Shortwave diathermy has a benefit over ultrasound because it can increase intramuscular temperature to what level?

A) 4 to 5°C
B) 1 to 2°C
C) 3 to 4°C
D) 5 to 6°C

Question 8

What type of shortwave diathermy places the patient in the electromagnetic field produced by the unit?

A) Induction field generators
B) Capacitive field generators
C) Capacitive field generators and induction field generators
D) Neither the capacitive field generators nor the induction field generators

Question 9

Which modality offers the longest stretching window post-treatment?

A) Thermal ultrasound
B) Moist heat pack
C) Shortwave diathermy
D) Plug-in heat pack

Question 10

What tissues are selectively heated via induction field shortwave diathermy? Select all that apply.

A) Muscle
B) Bone
C) Adipose
D) Skin
E) Nervous

Question 11

Which modality heats the largest volume of tissue?

A) Thermal ultrasound
B) Moist heat pack
C) Shortwave diathermy
D) Plug-in heat pack

Question 12

According to the practical evidence,what is one of the most common clinical uses of shortwave diathermy?

A) Osteoarthritic knees
B) Hip flexor strain
C) Posterior thigh muscle spasm
D) Deep-vein thrombosis

Question 13

Shortwave diathermy is a(n)__frequency electrical current that produces deep-tissue heating.

A) high-
B) low-
C) alternating
D) pulsed

Question 14

When using microwave diathermy,how far must all metal be from pads,drums,or coils of the unit?

A) At least 2 feet
B) At least 4 feet
C) At least 6 feet
D) At least 8 feet

Question 15

Which of the following statements is accurate regarding inductive shortwave diathermy?

A) The generator produces the greatest heat directly adjacent to the coil.
B) The amount of heating is highly dependent on water content.
C) The heating is tissue-type specific.
D) Inductive is considered safer than capacitive.

Question 16

Which are accurate statements about shortwave diathermy when comparing it to ultrasound? Select all that apply.

A) Shortwave diathermy uses acoustic energy.
B) Shortwave diathermy targets collagen-rich tissues.
C) Shortwave diathermy heats a large volume of tissue.
D) Shortwave diathermy increases intramuscular tissue by 18°F.
E) Shortwave diathermy heat is retained longer than that of ultrasound.

Question 17

What effects can pulsed shortwave diathermy produce?

A) Thermal only
B) Nonthermal only
C) Thermal and nonthermal
D) Neither thermal nor nonthermal

Question 18

What is an accurate statement regarding the heat generated via induction field diathermy?

A) The amount of heat depends only on the strength of the magnetic field.
B) Increasing the distance between the source of the electromagnetic field and the tissue will increase the heating.
C) Heat is produced via the dipole effect.
D) Increased adipose tissue thickness will reduce the rate and magnitude of heating.

Question 19

Due to the complexity of setup and the potential for burns,what method is infrequently used?

A) Drum
B) Cable
C) Electrode
D) Pan

Question 20

Which of the following are considered nonthermal effects associated with shortwave diathermy? Select all that apply.

A) Increased microvascular perfusion
B) Activation of fibroblast growth factors
C) Increased macrophage activity
D) Promotion of edema reduction
E) Reduction of muscle hypertrophy