High Voltage Flashcards
1
Q
ES: High Voltage Pulsed Galvanic Stimulation - General
A
- Passage of HVPC decreases skin resistance due to current flowing toward skin capacitors rather than resistors.
- Thermal effects are negligible (little resistance to the current).
2
Q
ES: High Voltage Pulsed Galvanic Stimulation - Parameters
A
- Paired monophasic waveform
- Instantaneous rise and exponential fall of current
- Continuous, surged or pulsed
- Typically twin-peaked pulses of short duration
3
Q
ES: High Voltage Pulsed Galvanic Stimulation - Wound Healing Concept
A
- Intact skin surface -ve with respect to deeper epidermal layers
- Injury to skin develops +ve potentials initially and -ve potentials during healing
- Absent or insufficient +ve potentials retard tissue regeneration
- Addition of +ve potentials initially through anode may promote or accelerate healing
4
Q
ES: High Voltage Pulsed Galvanic Stimulation - Parameters
A
- Amplitude: Comfortable tingling, paresthesia, no muscle reponse
- Pulse rate: 50-200 pps
- Pulse duration: 20-100 microsec
- Duration: 20-60 min\
- Both high volt pulse and low volt continuous can be used
- Clean and debride wound first and pack with sterile saline-soaked gauze.
- Place active electrode over gauze
- For bacterocidal effect AE = (-)
- For culture-free wound, AE = (+)
5
Q
ES: High Voltage Pulsed Galvanic Stimulation - Indications
A
- Inflammation phase:
- Free from necrosis and exudates, promote granulation
- Proliferation phase:
- Reduce wound size (depth, diameter, tunneling)
- Epithelialization phase:
- Stimulate epidermal proliferation and capillary growth