fulguration
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fulguration
[ful″gu-ra´shun]destruction of living tissue by electric sparks generated by a high-frequency current.
direct fulguration that in which an insulated electrode with a metal point is connected to the uniterminal and an electric spark is allowed to impinge on the area being treated.
indirect fulguration that in which the patient is connected directly by a metal handle to the uniterminal and the operator uses an active electrode to complete an arc from the patient.
ful·gu·ra·tion
, direct fulgurationindirect fulguration (ful'gŭ-rā'shŭn),Destruction of tissue by means of a high-frequency electric current: direct fulguration uses an insulated electrode with a metal point, which is connected to the uniterminal of the high-frequency apparatus, from which a spark of electricity is allowed to impinge on the area to be treated; indirect fulguration involves directly connecting the patient by a metal handle to the uniterminal and using an active electrode to complete an arc from the patient.
[L. fulgur, lightning stroke]
fulguration
See electrodesiccation.
fulguration
The controlled surgical destruction of tissue by fulguration (using high-frequency electric current), in particular at margins of a malignancy.fulguration
Surgery Destroying tissue with an electric current; cauterization. See Electrocauterization.ful·gu·ra·tion
(ful'gŭr-ā'shŭn)Destruction of tissue by means of a high-frequency electric current: direct fulguration uses an insulated electrode with a metal point, which is connected to the uniterminal of the high-frequency apparatus, from which a spark of electricity is allowed to impinge on the area to be treated; indirect fulguration involves directly connecting the patient by a metal contact to the uniterminal and utilizing an active electrode to complete an arc from the patient.
[L. fulgur, lightning stroke]
fulguration
Destruction of tissue by DIATHERMY.fulguration
high-frequency electric current tissue destruction (hyfrecation probe is held just above the lesion, allowing electrical energy to arc from probe tip to skin surface) Table 1| Agent | Action | Special precautions | Contraindications |
| Monochloroacetic acid (crystals or saturated solution) e.g. single VP | Keratolytic; hydrolysing agent Non-self-limiting | Deep penetration Painful Do not use mask if applying solution Use a mask if applying crystals Review in 5–7 days Neutralize with foot bath ± NaHCO3 or NaCl | Soft-tissue atrophy Peripheral vascular disease Sensory neuropathy |
| Salicylic acid paste (40–70%) e.g. single VP; plantar hard corn | Keratolytic; hydrolysing agent | Macerates tissues Review in 7–14 days May be used in conjunction with monochloroacetic acid crystals Neutralize with foot bath ± NaHCO3 or NaCl | Soft-tissue atrophy Peripheral vascular disease Sensory neuropathy |
| Pyrogallic acid e.g. single VP | Keratolytic; oxidizing agent | Deep penetration Review in 3–5 days Prolonged caustic action Do not apply more than 3 times sequentially Stains skin black/brown | Use with great care: may cause deep tissue breakdown Soft-tissue atrophy Peripheral vascular disease Sensory neuropathy |
| Trichloroacetic acid (saturated solution; 10% solution) e.g. mosaic VP | Mild keratolytic Protein precipitant | Shallow penetration Neutralize with foot bath ± NaHCO3 or NaCl Review in 3 weeks | Peripheral vascular disease Sensory neuropathy |
| Silver nitrate (70% solution; 75–95% stick) e.g. mosaic VP; as a protective skin application below a mask | Protein precipitant Self-limiting Stains skin black/brown Maximum effect occurs within 24 hours | Some patients show hypersensitivity to silver nitrate (or experience acute pain) Neutralize with NaCl foot bath May be applied in alternate layers with trichloroacetic acid | Peripheral vascular disease Known sensitivity |
| Potassium hydroxide (KOH; 85% pellets) | Strong keratolytic | Potentially deep penetration Action of KOH stopped by application of 5% acetic acid after macerated coagulum has been removed Single treatment | Soft-tissue atrophy Peripheral vascular disease Sensory neuropathy |
| Phenol (80% solution or 100% crystal) | Protein precipitate | Action retarded by flooding with industrial methylated spirit Skin overspill flooded with glycerine Review as per postoperative protocol | Peripheral vascular disease (phenol suppresses inflammatory response) |
VP, verruca pedis. | |||
ful·gu·ra·tion
(ful'gŭr-ā'shŭn)Destruction of tissue by means of a high-frequency electric current: direct fulguration uses an insulated electrode with a metal point, which is connected to the uniterminal of the high-frequency apparatus, from which a spark of electricity is allowed to impinge on the area to be treated; indirect fulguration involves directly connecting the patient by a metal contact to the uniterminal and utilizing an active electrode to complete an arc from the patient.
[L. fulgur, lightning stroke]
fulguration (ful´gyərā´shən),
n the destruction of soft tissue by an electric spark that jumps the gap from an electrode to the tissue without the electrode touching the tissue. See also electrocoagulation.
fulguration
destruction of living tissue by electric sparks generated by a high-frequency current.