Dose Calculations for Local Anesthetic
Solutions (Dental Hygiene) Questions
and Answers Latest Version Already
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How do you calculate the maximum safe dose of a local anesthetic for a patient?
✔✔ Multiply the patient’s weight by the maximum dose per kg for the selected anesthetic.
If a patient weighs 40 kg and the maximum dose of lidocaine is 4.4 mg/kg, what is the maximum
dose of lidocaine for this patient?
✔✔ 176 mg (40 kg x 4.4 mg/kg)
A 50 kg patient is receiving a 2% lidocaine solution. What is the maximum amount of lidocaine
that can be administered safely?
✔✔ 220 mg (50 kg x 4.4 mg/kg)
You are administering lidocaine 2% solution, and each cartridge contains 36 mg of lidocaine.
How many cartridges can you administer to a patient weighing 70 kg?
✔✔ 7 cartridges (70 kg x 4.4 mg/kg = 308 mg; 308 mg ÷ 36 mg/cartridge)
1
, A patient requires 0.5 mg/kg of a local anesthetic for a procedure. If the patient weighs 60 kg,
how much anesthetic should be given?
✔✔ 30 mg (0.5 mg/kg x 60 kg)
If you have a 1.8% solution of lidocaine and you need to administer 40 mg of anesthetic, how
many milliliters of the solution should be used?
✔✔ 2.22 ml (40 mg ÷ 20 mg/ml)
How much epinephrine is present in a 1:100,000 solution of epinephrine?
✔✔ 0.01 mg/ml (1 g of epinephrine per 100,000 ml solution)
If you want to administer 300 mg of a local anesthetic using a 2% solution, how many milliliters
should you use?
✔✔ 15 ml (300 mg ÷ 20 mg/ml)
How many milliliters of a 4% solution of articaine would be needed to administer 100 mg of
anesthetic?
✔✔ 2.5 ml (100 mg ÷ 40 mg/ml)
2
Solutions (Dental Hygiene) Questions
and Answers Latest Version Already
Passed
How do you calculate the maximum safe dose of a local anesthetic for a patient?
✔✔ Multiply the patient’s weight by the maximum dose per kg for the selected anesthetic.
If a patient weighs 40 kg and the maximum dose of lidocaine is 4.4 mg/kg, what is the maximum
dose of lidocaine for this patient?
✔✔ 176 mg (40 kg x 4.4 mg/kg)
A 50 kg patient is receiving a 2% lidocaine solution. What is the maximum amount of lidocaine
that can be administered safely?
✔✔ 220 mg (50 kg x 4.4 mg/kg)
You are administering lidocaine 2% solution, and each cartridge contains 36 mg of lidocaine.
How many cartridges can you administer to a patient weighing 70 kg?
✔✔ 7 cartridges (70 kg x 4.4 mg/kg = 308 mg; 308 mg ÷ 36 mg/cartridge)
1
, A patient requires 0.5 mg/kg of a local anesthetic for a procedure. If the patient weighs 60 kg,
how much anesthetic should be given?
✔✔ 30 mg (0.5 mg/kg x 60 kg)
If you have a 1.8% solution of lidocaine and you need to administer 40 mg of anesthetic, how
many milliliters of the solution should be used?
✔✔ 2.22 ml (40 mg ÷ 20 mg/ml)
How much epinephrine is present in a 1:100,000 solution of epinephrine?
✔✔ 0.01 mg/ml (1 g of epinephrine per 100,000 ml solution)
If you want to administer 300 mg of a local anesthetic using a 2% solution, how many milliliters
should you use?
✔✔ 15 ml (300 mg ÷ 20 mg/ml)
How many milliliters of a 4% solution of articaine would be needed to administer 100 mg of
anesthetic?
✔✔ 2.5 ml (100 mg ÷ 40 mg/ml)
2
