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).
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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
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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
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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 = (+)
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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
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