Lidocaine Iontophoresis for Local Anesthesia Before Shave Biopsy

Abstract

Lidocaine iontophoresis is a safe and effective method of administering topical anesthesia before shave biopsy in adult patients.

The Relation between Epinephrine Concentration and the Anesthetic Effect of Lidocaine Iontophoresis

“…The pinprick test using various sizes of needles, including 22‐ to 30‐gauge needles, has been frequently used not only to evaluate the anesthetic effect in spinal or epidural anesthesia and iontophoresis, but for the diagnosis of neuropathic pain and pain research 5,13,19 . In the present study, pricking pain was assessed using a 26‐gauge needle with a stopper placed 2 mm distant from the needle tip to examine the anesthetic effects of lidocaine‐iontophoresis with various concentrations of epinephrine added.…”

“…Pinprick Test. A pinprick test was performed according to a previously described method 2,8,13 . An investigator blinded to the drug mixture, drug volumes, and electrical currents that had been applied performed the pinprick test using a 26‐gauge needle with a stopper 2 mm distant from the needle tip.…”

Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Lidocaine/Tetracaine Patch for Induction of Local Anesthesia prior to Minor Dermatologic Procedures in Geriatric Patients

“…Lidocaine iontophoresis is a topical method by which electrical current is used to facilitate the transport of lidocaine into the skin. Although this method has been shown to induce adequate anesthesia with a rapid onset of action, the clinical utility is offset by the need for equipment, the risk of inducing burns, and the limited surface area that can be anesthetized at once 13–17 …”

Lokale Anästhesieverfahren in der Dermatologie

“…Dabei wird in kleinen Arealen bis 10 cm 2 eine ausreichende Anästhesie bis 6 mm Gewebetiefe für Inzisionen, Injektionen, Laserchirurgie und Dermabrasion erreicht [5,17].…”

“…Ein umfassendes Literaturverzeichnis zu topischen Anästhesieverfahren findet sich in [5,17] [24][25][26][27][28][29][30] Gauge und Nadellängen von 1-2,5 cm. Vorteilhaft sind 5-oder 10-mlLuer-Lock-Spritzen, um eine sichere Konnexion zwischen Spritze und Kanüle während der Instillation gegen den Gewebeturgor zu erhalten.…”