Electrophysiology and Wound Care Flashcards
6 cards from real MPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Electrophysiology and Wound Care flashcards as text
Which type of electrical stimulation is most appropriate for denervated muscle to maintain muscle bulk and prevent atrophy?
Answer: Low-frequency direct current using long pulse durations
Denervated muscle requires longer pulse durations (greater than 10 ms) and lower frequencies to produce a twitch response, as it lacks functional motor nerve fibers and cannot respond to normal NMES parameters.
In wound healing, the proliferative phase is characterized by which cellular process?
Answer: Fibroblast activity, collagen synthesis, and angiogenesis
The proliferative phase (days 3-21) is characterized by fibroblast proliferation, type III collagen synthesis, angiogenesis (new blood vessel formation), and epithelialization.
High-volt pulsed current (HVPC) used for wound healing is best described as:
Answer: Monophasic twin-peaked pulses with peak voltages greater than 100V and very short pulse durations
HVPC delivers monophasic twin-peaked pulses at high peak voltages (greater than 100V) but very short durations and low average current, making it safe for wound care application.
According to the Wagner classification, a Grade 2 diabetic foot ulcer is defined as:
Answer: Deep ulcer penetrating to tendon, capsule, or bone
Wagner Grade 2 describes a deep diabetic foot ulcer penetrating to tendon, joint capsule, or bone, without frank infection or osteomyelitis.
Which electrophysiological finding is most characteristic of carpal tunnel syndrome (median nerve compression)?
Answer: Decreased sensory nerve conduction velocity across the wrist
Carpal tunnel syndrome characteristically shows prolonged or slowed sensory nerve conduction velocity (NCV) of the median nerve across the wrist, as sensory fibers are more sensitive to compression than motor fibers.
Which color of wound tissue indicates healthy granulation tissue and suggests the wound is progressing toward healing?
Answer: Red (granulation)
Red, beefy, moist granulation tissue indicates healthy wound healing with good vascularization. It represents new connective tissue and blood vessels filling the wound bed.