How is H-Wave high-frequency stimulation described in its mechanism?

• A. Activates muscles to stimulate circulation, bringing in nutrients promoting faster recovery by triggering the lymphatic system to flush out wastes
• B. Generates a mild current that produces a comfortable, non-fatiguing muscle contraction
• C. Inhibits the function of sodium channel within the nerve and creates an anesthetic effect
• D. Produces a strong, fatiguing contraction

Answer: (C)

High-frequency H-Wave stimulation is described as producing analgesia by blocking nerve conduction through interference with sodium channel function, leading to an anesthetic-type effect. When sodium channels are inhibited, the ability of nerves to depolarize and propagate action potentials is reduced, so pain signals are dampened even though the muscle isn’t being actively pumped or fatigued. This conduction-block concept explains why this modality can reduce sensation without generating a strong, fatigue-inducing muscle contraction or directly promoting circulation through muscle pumping.

The other ideas—driving a non-fatiguing, comfortable contraction to enhance circulation, or causing a strong, fatiguing contraction, or directly triggering lymphatic flushing—represent different mechanisms more typical of other electrical modalities or therapies. The key point here is that the described high-frequency mechanism centers on transient nerve conduction blockade and analgesia rather than muscle activation or edema clearance via contraction.