Anaesthesia · Pain Management and Nerve Blocks

A 70 kg patient requires local anaesthetic infiltration for a wound repair. What is the maximum safe dose of lidocaine with epinephrine that can be administered?

A 700 mg
B 490 mg ✓
C 350 mg
D 200 mg

Correct answer: B. 490 mg

Explanation

The maximum safe dose of lidocaine with epinephrine is 7 mg/kg, up to 500 mg. For a 70 kg patient, this equals 490 mg. Without epinephrine, the maximum safe dose is 3 to 4 mg/kg. Exceeding these doses significantly increases the risk of local anaesthetic systemic toxicity.

Reference: Miller's Anesthesia, 9th ed.

High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP

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