The document discusses high voltage pulsed galvanic stimulation (HVPGS), a neuromuscular stimulator that delivers a micro-amperage current via a twin-peak monophasic waveform to induce muscle contraction and chemical changes in the body. It outlines various modes of application and their physiological effects, such as reducing swelling, re-educating muscles, and promoting wound healing. Typical indications for HVPGS include conditions like adhesive capsulitis, bursitis, and post-surgical pain management.

1. By Dr. Sachi mevada
High voltage pulsed
galvanic stimulation

2. The high volt pulsed galvanic stimulator
(HVPGS), a type of neuromuscular stimulator is
a short duration (microsecond), micro-amperage
current driven by a high voltage current (up to
300 volts) that is delivered as a twin-peak
monophasic waveform of fixed duration (100
microseconds).
Introduction

3. This direct current can produce both a
mechanical contraction and a chemical change
within the body.
Typical indications for use include a wide range
of clinical problems where high voltage may be
applied alone or in combination with other
modalities.
Introduction

4. Galvanic stimulation combines very short pulse
duration (of constant intensity) and high peak
voltage(2-2.5A), yet low total current per
second(1.2-1.5mA), to give relative comfort and
avoid tissue damage while stimulating deep
tissues. It is also an efficient means of exciting
nerve fibers.
Introduction

5. Introduction

6. A. The Pulse separation is about 65
microseconds.
B. The twin pulses overlap, the pulse duration is
about 14 microsecond, and the twin pulses
reinforce each other, resulting in a stronger
motor response with the overlapping
waveforms.
Introduction

7. Continuous mode : the trains of twin pulses
are delivered continuously.
Reciprocate mode : refers to the alternate
application of trains of pulses to one or
other of two active pads and does not mean
that the current direction is reversed.
Surged mode : gives a train of pulses whose
intensity is gradually increased.
Mode of HVPGS

8. HVPGS
machine

9. * Maintaining or increasing range of motion.
* Re-educating muscles.
* Edema/swelling/inflammation reduction.
* Reducing motor spasticity.
* Increasing local blood circulation to injured
area and promoting fluid movement to and
from treatment area.
Physiological effect

10. * Preventing or retarding muscle disuse atrophy.
* Managing chronic/post-traumatic/post-surgical
pain conditions allowing patient to participate in
their pain management program.
* Stimulation and acceleration of wound healing
by promoting blood circulation to wound.
Physiological effect

11. * Adhesive Capsulitis, Bursitis
* Wound Healing, Odema
* Cervical Sprain/Spasm
* Degenerative Disc, Sciatica
* Epicondylitis
* Lumbosacral Sprain
* Shoulder Subluxation, TMJ
* PostOperative conditions-Arthroscopy,
Discectomy, Spinal Fusion
Indication

12. Minimum of 30-40 minutes/7 days a week.
Duration
Application
* The positive pad is like ice, tending to reduce
circulation to the area under the pad and
reduction in swelling. The negative pad is like
heat, promoting increased circulation, reportedly
speeding healing.

13. T h a n k y o u !