What is a typical HVPC parameter set for wound care?

• A. Biphasic symmetric pulses; 200 μs; 1-2 pps; 1-2 minutes
• B. Alternating current at 50 Hz for 30 minutes
• C. Direct current at 2 mA for 5 minutes
• D. Monophasic twin-peak pulses with high voltage; 40-100 μs; 60-125 pps; comfortable intensity for 20-60 minutes

Answer: (D)

High-voltage pulsed current for wound care uses a monophasic, twin-peak pulse delivered at high voltage, with a short pulse duration and a moderately high frequency, applied for a sufficient treatment time. This combination—40–100 microseconds per pulse, 60–125 pulses per second, and an intensity that feels comfortable—fits the standard wound-healing protocol because it promotes cellular activities essential to healing (like fibroblast activity and epithelialization) while minimizing tissue irritation. The duration of 20–60 minutes per session is designed to provide effective stimulation without fatigue or discomfort.

The other patterns don’t fit typical HVPC wound-care parameters: biphasic symmetric pulses with a longer pulse duration and very low repetition rate aren’t the standard wound-healing approach; alternating current at 50 Hz is continuous AC rather than pulsed high-voltage current; direct current at a small milliampage for a short time isn’t HVPC and doesn’t align with the common wound-healing protocol.