MPT Electrophysiology and Wound Care

Question 1

Which type of electrical stimulation is most appropriate for denervated muscle to maintain muscle bulk and prevent atrophy?

Accepted Answer

Low-frequency direct current using long pulse durations

Answer

High-volt pulsed current (HVPC)

Answer

Russian stimulation (medium frequency AC)

Answer

Interferential current (IFC)

Question 2

In wound healing, the proliferative phase is characterized by which cellular process?

Accepted Answer

Fibroblast activity, collagen synthesis, and angiogenesis

Answer

Platelet aggregation and hemostasis

Answer

Macrophage debridement of necrotic tissue

Answer

Collagen cross-linking and scar remodeling

Question 3

High-volt pulsed current (HVPC) used for wound healing is best described as:

Accepted Answer

Monophasic twin-peaked pulses with peak voltages greater than 100V and very short pulse durations

Answer

Alternating current with frequency greater than 1000 Hz

Answer

Biphasic balanced waveform for pain control only

Answer

Low-voltage direct current with continuous flow

Question 4

According to the Wagner classification, a Grade 2 diabetic foot ulcer is defined as:

Accepted Answer

Deep ulcer penetrating to tendon, capsule, or bone

Answer

Superficial ulcer without subcutaneous involvement

Answer

Localized gangrene

Answer

Full-thickness ulcer with exposed bone and osteomyelitis

Question 5

Which electrophysiological finding is most characteristic of carpal tunnel syndrome (median nerve compression)?

Accepted Answer

Decreased sensory nerve conduction velocity across the wrist

Answer

Increased motor conduction velocity of the ulnar nerve

Answer

Normal distal motor latency with absent H-reflex

Answer

Fibrillation potentials in the APB with normal sensory conduction

Question 6

Which color of wound tissue indicates healthy granulation tissue and suggests the wound is progressing toward healing?

Accepted Answer

Red (granulation)

Answer

Yellow (slough)

Answer

Black (eschar)

Answer

Green (infected exudate)