1
Question: Wounds
(Click the link to comment and to vote – voting not working through email, sorry!)
You are caring for a 20 kg child involved in an auto vs. bicycle accident who has several superficial lacerations requiring suturing. You calculated the maximum amount of 1% lidocaine with epinephrine that you can safely infiltrate for laceration repair.
Kelly February 28, 2023 - 11:57 pm
C) 14mL
For lidocaine WITH epinephrine, the maximum dose is 7 mg/kg. Therefore, in this child, the maximum dose is 7 mg/kg x 20 kg = 140 mg. 1% lidocaine with epinephrine is 10mg/mL. Therefore, the maximum dose in mL is 140 mg divided by 10 mg/mL = 14mL. The maximum dose of lidocaine WITHOUT epinephrine is 4-5mg/kg. The maximum dose of bupivacaine is 2 mg/kg. 2% lidocaine is 20mg/mL, and 0.5% lidocaine is 5mg/mL (an option when there are so many lacerations or such large lacerations that you may need more mL than you are allowed with 1% lidocaine).