NPTE-PT NPTE-PT Test Therapeutic Modalities Application Questions and Answers 3

Question 1

A physical therapist is using therapeutic ultrasound to treat adhesive capsulitis of the shoulder. To maximize collagen extensibility in the posterior capsule, which parameters are MOST appropriate?

Accepted Answer

1 MHz, continuous, 1.5 W/cm², 8 minutes

Answer

The posterior glenohumeral capsule is a deep structure requiring 1 MHz for adequate penetration, and continuous mode at sufficient intensity and duration maximizes the thermal effect needed for collagen extensibility.

Question 2

When using interferential current (IFC) therapy for a patient with chronic hip pain, what is the PRIMARY advantage of IFC over conventional TENS?

Accepted Answer

IFC produces deeper current penetration due to reduced skin impedance at higher frequencies

Answer

IFC uses medium-frequency carrier currents (typically 4000 Hz) that encounter less skin impedance, allowing deeper penetration of the therapeutic beat frequency into tissues.

Question 3

A patient with a stage III pressure injury on the sacrum is being treated with electrical stimulation to promote wound healing. Which current type and electrode configuration is BEST supported by evidence?

Accepted Answer

High-voltage pulsed current with the positive electrode over the wound during the inflammatory phase

Answer

High-voltage pulsed current (HVPC) with positive polarity over the wound during the inflammatory phase attracts neutrophils and macrophages to promote debridement and healing.

Question 4

A physical therapist wants to use laser therapy (photobiomodulation) on a patient Achilles tendon to promote tissue repair. Which of the following is a contraindication?

Accepted Answer

Direct application over a known malignant tumor

Answer

Laser therapy is contraindicated over malignant tissue because photobiomodulation may stimulate cellular proliferation and potentially accelerate tumor growth.

Question 5

A physical therapist is treating a patient with myofascial trigger points in the upper trapezius using dry needling combined with electrical stimulation. What frequency range is typically used to elicit a local twitch response and reduce trigger point irritability?

Accepted Answer

1-2 Hz to produce individual muscle twitches

Answer

Low-frequency stimulation at 1-2 Hz produces individual visible twitch responses at the trigger point, which helps reset dysfunctional motor endplates and reduce trigger point activity.

NPTE-PT Test Practice Test

NPTE-PT Test Practice Test

NPTE-PT NPTE-PT Test Therapeutic Modalities Application Questions and Answers 3