Local Anaesthetic Maximum Dose Calculator
Calculates the maximum recommended single dose of common local anaesthetics for adults, to help prevent local anaesthetic systemic toxicity (LAST).
Score interpretation
The total dose across all injection sites. Use lean or ideal body weight in obesity, and reduce the dose in the elderly, in hepatic or cardiac impairment and in pregnancy.
→ Inject fractionated doses with aspiration; have 20% lipid emulsion available and follow the Association of Anaesthetists local anaesthetic toxicity guideline if toxicity occurs.
Interpretation bands for the Local Anaesthetic Dose. Apply clinical judgement and local guidance.
References
- Rosenberg PH, Veering BT, Urmey WF. Maximum recommended doses of local anesthetics: a multifactorial concept. Reg Anesth Pain Med 2004;29(6):564-575.
- AAGBI Safety Guideline: Management of Severe Local Anaesthetic Toxicity. Association of Anaesthetists of Great Britain and Ireland. 2010.
Related
Curated clinical cross-links plus same-class fallbacks.
- Bupivacaine · Local Anaesthetic (Amide)
- Lidocaine (IV — Anaesthesia/ICU) · Local Anaesthetic / Antiarrhythmic (Class Ib)
- Prilocaine · Local Anaesthetic (Amide)
- Lidocaine hydrochloride · Amide local anaesthetic / Class IB antiarrhythmic
- Bupivacaine hydrochloride · Long-acting amide local anaesthetic
- Chlorhexidine with lidocaine · Antiseptic with local anaesthetic
Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.