HVPC

High-Voltage Pulsed Current (HVPC) is a form of electrical stimulation used in physical therapy and rehabilitation. It delivers short, high-amplitude pulses to body tissues through skin electrodes, producing a monophasic electrical field. HVPC is typically delivered by specialized units and applied as part of a broader treatment plan.

Therapy parameters commonly involve pulse durations of about 20 to 100 microseconds, frequencies around 1 to 100 Hz, and peak voltages reaching several hundred volts. Treatments usually last 15 to 60 minutes, with electrode polarity adjusted to target specific therapeutic goals. Electrode placement and current settings are chosen by a clinician based on the condition being treated.

Proposed mechanisms include galvanotaxis (directed cell migration toward an electrode), improved microcirculation, edema reduction via electro-osmosis, and modulation of inflammatory and tissue-repair processes. Analgesic effects have been reported in some cases, but evidence for pain relief with HVPC is variable and condition-dependent.

Indications commonly cited include wound healing (acute and chronic wounds, surgical wounds, burns), edema management, and adjunctive therapy for soft-tissue injuries or postoperative rehabilitation. It is generally used in conjunction with standard wound care, compression, exercise, and other modalities as part of a comprehensive plan.

Safety and considerations: HVPC should be applied by trained clinicians. Contraindications typically include implanted electronic devices (such as pacemakers), active malignancy in the treatment area, and pregnancy in situations where the abdomen or pelvis would be exposed. Precautions include damaged or non-intact skin, impaired sensation, or a history of seizures. As with any electrical therapy, proper device settings, skin preparation, and monitoring are essential to minimize risk.

Evidence and outlook: High-quality trials are limited, and results vary by wound type and protocol. Some studies report benefits in wound healing and edema reduction, while others show modest or inconclusive effects.