ABSTRACT

Answers to multiple choice questions 1. B, C, E To convert to mg/mL from %, simply move the decimal point one digit to the left, i.e., 1% = 10 mg/mL.

Maximum doses of local anaesthetics are:

Lidocaine 3 mg/kg (7 mg/kg with adrenaline) Bupivacaine/levobupivacaine 2 mg/kg Prilocaine 6 mg/kg (9 mg/kg with adrenaline)

The correct calculations therefore are:

The doses above refer to administration into tissues with a poor blood supply. Local anaesthetics are more likely to cause toxicity if injected into vascular tissues, and the previously mentioned doses could well be fatal if inadvertently injected intravascularly.