In children, the recommended maximum safe dose of lidocaine with 1:100,000 epinephrine is ______________ mg/lb

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7: The maximum safe dose is 7 mg/kg in adults and children. For example, in a 33 lb child (15 kg), the maximum dose is 105 mg (7 mg/kg 3 15 kg = 105 mg. 2% lidocaine = 20 mg/ml, thus 105 mg/20 mg/ml = 5.25 ml. One cartridge = 1.8 ml; thus 2.9 cartridges is the maximum.