Dose Calculations for Local Anesthetic Solutions (Dental Hygiene) Questions and Answers Latest Version Already Passed

Dose Calculations for Local Anesthetic 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) 2 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) 3 A patient is receiving a 2% solution of lidocaine with epinephrine. How much lidocaine (in milligrams) is in one cartridge (1.8 ml)? 36 mg (1.8 ml x 20 mg/ml) For a 45 kg child, what is the maximum recommended dose of 2% lidocaine? 396 mg (45 kg x 4.4 mg/kg) If you administer 2 cartridges of a 2% lidocaine solution, how many milligrams of lidocaine have been given? 72 mg (2 cartridges x 36 mg/cartridge) How would you calculate the dose of local anesthetic for a patient with a known weight of 60 kg, given a local anesthetic with a maximum recommended dose of 7 mg/kg? Multiply 60 kg by 7 mg/kg to get 420 mg. A 12-year-old patient weighs 35 kg. If the maximum dose of lidocaine is 4.4 mg/kg, what is the maximum safe dose for this child? 154 mg (35 kg x 4.4 mg/kg) 4 If a cartridge of lidocaine contains 36 mg and