ear, nose, and throat disorders
How To Do an Auricular Block
Equipment for Auricular Block
Nonsterile gloves, mask, and safety glasses or a face shield Antiseptic solution (eg,chlorhexidine, povidone iodine) Injectable local anesthetic such aslidocaine2% with or withoutepinephrine* 1:100,000 or, for longer-duration anesthesia,bupivacaine0.5% with or withoutepinephrine* 1:200,000 5- to 10-mL syringe, 25- or 27-gauge needle: 3-cm long for injection * Maximum dose of local anesthetics:Lidocainewithoutepinephrine, 5 mg/kg;lidocainewithepinephrine, 7 mg/kg;bupivacaine, 1.5 mg/kg. NOTE: A 1% solution (of any substance) represents 10 mg/mL (1 gm/100 mL).Epinephrinecauses vasoconstriction, which prolongs the anesthetic effect. Patients with cardiac disease should receive only limited amounts ofepinephrine(maximum 3.5 mL of solution containing 1:100,000epinephrine); alternatively, use local anesthetic withoutepinephrine. 