Which modality is specifically associated with edema reduction and wound healing in electrotherapy?

• A. HVPC is the modality specifically associated with edema reduction and wound healing
• B. TENS
• C. Iontophoresis
• D. Microcurrent only

Answer: (A)

High-voltage pulsed current is known for helping both edema reduction and wound healing. Its monophasic, pulsed waveform delivers a brief, high-amplitude stimulus that mainly affects superficial tissues and the lymphatic/vascular systems without causing tissue damage. This can stimulate lymphatic drainage and venous return, which reduces swelling. At a wound site, the electrical field influences cellular activity and microcirculation in ways that support repair—promoting processes like macrophage activity, fibroblast function, and epithelialization that drive healing. Other modalities have different primary goals: TENS is used mainly for pain modulation, iontophoresis focuses on delivering drugs into tissue rather than broad edema or healing, and microcurrent is another healing option but is not as specifically associated with edema reduction and wound healing as HVPC in typical rehabilitation practice.