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Radiofrequency ablation (RFA), also called fulguration, [1] is a medical procedure in which part of the electrical conduction system of the heart, tumor, sensory nerves or a dysfunctional tissue is ablated using the heat generated from medium frequency alternating current (in the range of 350–500 kHz).
In fulguration mode, the electrode is held away from the tissue, so that when the air gap between the electrode and the tissue is ionized, an electric arc discharge develops. In this approach, the burning to the tissue is more superficial, because the current is spread over the tissue area larger than the tip of electrode. [13]
Fulguration, in which a deliberate spark is generated by touching or nearly touching the sharp probe to the lesion or skin. This results in far higher temperatures at the point of contact of the spark to skin, causing very high temperatures and carbonization (eschar) of the tissue immediately at the spark-contact point, and just below it.
In medicine, ablation is the removal of a part of biological tissue, usually by surgery.Surface ablation of the skin (dermabrasion, also called resurfacing because it induces regeneration) can be carried out by chemicals (chemoablation), by lasers (laser ablation), by freezing (cryoablation), or by electricity (fulguration).
Halo-gravity traction (HGT) is a type of traction device utilized to treat spinal deformities such as scoliosis, [1] [2] congenital spine deformities, cervical instability, basilar invagination, and kyphosis. [3]
Hunner's ulcers or Hunner's lesions occur in 5 to 10 percent of people who have the bladder disease interstitial cystitis.They form on the wall of the bladder and, like any ulcer, they can bleed, ooze, and may vary in size.
Cryosurgery (with cryo from the Ancient Greek κρύο ' icy cold ') is the use of extreme cold in surgery to destroy abnormal or diseased tissue; [1] thus, it is the surgical application of cryoablation.
APC involves the use of a jet of ionized argon gas directed through a probe passed through the endoscope.The probe is placed at some distance from the bleeding lesion, and argon gas is emitted, then ionized by a high-voltage discharge (approx 6kV). [1]