NPTE-PTA Therapeutic Modalities and Electrotherapy 2

Question 1

TENS (Transcutaneous Electrical Nerve Stimulation) in conventional mode works primarily through which pain mechanism?

Accepted Answer

Gate control theory

Answer

Endorphin release

Answer

Tissue heating

Answer

Alpha motor neuron inhibition

Question 2

Which ultrasound application technique is required when treating bony or irregular surface areas?

Accepted Answer

Water immersion technique

Answer

Stationary technique

Answer

Moving transducer technique

Answer

Air-coupling technique

Question 3

A patient is receiving NMES (Neuromuscular Electrical Stimulation) for quadriceps re-education post-ACL repair. The on:off ratio should be set to:

Accepted Answer

1:5 to allow adequate muscle recovery between contractions

Answer

1:1 for maximum endurance training

Answer

3:1 for rapid fatigue training

Answer

2:2 for equal work-rest balance

Question 4

Which laser safety classification is typically used in therapeutic photobiomodulation (low-level laser therapy)?

Accepted Answer

Class 3B (medium power)

Answer

Class 1 (exempt)

Answer

Class 2 (low power visible)

Answer

Class 4 (high power)

Question 5

What is the therapeutic depth of penetration for a hot pack (hydrocollator)?

Accepted Answer

1–2 cm (superficial tissues)

Answer

0–0.5 cm (superficial skin only)

Answer

3–5 cm (deep muscle)

Answer

5–7 cm (joint capsule)

Question 6

Which of the following is a contraindication for the use of electrical stimulation?

Accepted Answer

Active malignancy in the treatment area

Answer

Chronic muscle atrophy

Answer

Delayed-onset muscle soreness

Answer

Mild peripheral edema