Anaes Vivas · Local anaesthetic pharmacology
Clinical viva — choosing the local anaesthetic and calculating the dose
A clinical viva on LA selection and dosing — the agent (lidocaine, bupivacaine, ropivacaine), the maximum-dose table in mg/kg, the mg = concentration times volume times 10 calculation, and the role of adrenaline.
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Target exams
ANZCAFRCAABAEDAIC
Prompt
The examiner asks you to talk through how you choose a local anaesthetic for a peripheral nerve block, calculate the safe maximum dose, and explain the role of adrenaline.
Stimulus
Talk through how you choose the local anaesthetic for a femoral nerve block in a 70 kg patient, calculate the maximum safe dose, and explain why adrenaline may be added.
References2ShowHide
- [3]McAllister RK, Patel P. Bupivacaine. StatPearls, 2026.PMID 30422478
- [5]Waldinger R, Weinberg G, Gitman M Local Anesthetic Toxicity in the Geriatric Population. Drugs & Aging, 2020.PMID 31598909