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Ati rn dosage calculation rn adult medical surgical assessment 3.2 proctored exam
Total Questions : 32
Showing 10 questions, Sign in for moreA nurse is preparing to administer acetylcysteine 140 mg/kg PO stat to a client who weighs 178 lb. Available is acetylcysteine 200 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero)
Explanation
Calculation:
⦁ Convert the client's weight from pounds to kilograms
Weight = 178 lb ÷ 2.2
Weight = 80.9 kg
⦁ Calculate the prescribed dose in mg
Ordered Dose = 140 mg/kg × 80.9 kg
Ordered Dose = 11,326 mg
⦁ Identify the available concentration
Available Concentration = 200 mg/mL
⦁ Calculate the volume to administer
Volume = Ordered Dose ÷ Concentration
Volume = 11,326 ÷ 200
= 56.63 mL
⦁ Round to the nearest whole number
= 57 mL
A nurse is teaching a client who has a new prescription for sucralfate 1 g PO BID. Available is sucralfate 1 g/10 mL. How many tsp should the nurse instruct the client to self-administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use trailing zero.)
Explanation
Calculation:
⦁ Identify the ordered dose and available concentration
Ordered Dose: 1 g
Available Concentration: 1 g/10 mL
⦁ Calculate the volume to administer
Volume = (Ordered Dose ÷ Available Dose) × Volume Provided
Volume = (1 g ÷ 1 g) × 10 mL
Volume = 10 mL
⦁ Convert mL to teaspoons
1 tsp = 5 mL
Number of teaspoons = 10 ÷ 5
Number of teaspoons = 2 tsp
= 2 tsp
A nurse is preparing to administer cefazolin 1 g intermittent IV bolus in 0.9% sodium chloride 250 ml over 30 min. The drop factor on the manual IV tubing is 10 gtt/mL. The nurse should set the manual IV flow rate to deliver how many gtt/min? (Round the answer to the nearest whole, number. Use a leading zero if it applies. Do not use a trailing zero.]
Explanation
Calculation:
⦁ Identify the total volume, infusion time, and drop factor
Total Volume: 250 mL
Infusion Time: 30 minutes
Drop Factor: 10 gtt/mL
⦁ Calculate the flow rate
Flow Rate (gtt/min) = (Total Volume × Drop Factor) ÷ Time
Flow Rate = (250 × 10) ÷ 30
Flow Rate = 2,500 ÷ 30
Flow Rate = 83.33 gtt/min
⦁ Round to the nearest whole number
= 83 gtt/min
A nurse is preparing to administer hydrochlorothiazide 150 mg PO daily in 3 equally divided doses. Available is hydrochlorothiazide oral solution 50 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
⦁ Identify the total daily dose and dosing frequency
Total Daily Dose: 150 mg
Doses per day: 3
⦁ Calculate dose per administration
Dose per dose = 150 ÷ 3
Dose per dose = 50 mg
⦁ Identify the available concentration
Concentration: 50 mg/5 mL
⦁ Calculate the volume to administer
Volume to administer = (Dose ÷ Concentration) × Volume
Volume to administer = (50 ÷ 50) × 5
Volume to administer = 1 × 5
= 5 mL
A nurse is preparing to administer oxymorphone 1.5 mg IM to a client. Available is oxymorphone 1 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
⦁ Identify the ordered dose and available concentration
Ordered Dose: 1.5 mg
Available Concentration: 1 mg/mL
⦁ Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 1.5 ÷ 1
= 1.5 mL
A nurse is preparing to administer lorazepam 0.05 mg/kg via IV bolus to a client who weighs 175 lb. Available is lorazepam 2 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
⦁ Convert the client’s weight from pounds to kilograms
Weight = 175 ÷ 2.2
= 79.5 kg
⦁ Calculate the ordered dose in mg
Ordered Dose = 0.05 × 79.5
Ordered Dose = 3.975 mg
⦁ Identify the available concentration
Available Concentration: 2 mg/mL
⦁ Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 3.975 ÷ 2
Volume to administer = 1.9875 mL
⦁ Round to the nearest whole number
= 2 mL
A nurse is preparing to administer promethazine 12.5 mg IM. Available is promethazine 25 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
⦁ Identify the ordered dose and available concentration
Ordered Dose: 12.5 mg
Available Concentration: 25 mg/mL
⦁ Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 12.5 ÷ 25
= 0.5 mL
A nurse is preparing to administer furosemide 0.1 mg/kg via IV bolus to a client who weighs 183 lb. Available is furosemide 10 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
⦁ Convert the client’s weight from pounds to kilograms
Weight = 183 ÷ 2.2
= 83.2 kg
⦁ Calculate the ordered dose in mg
Ordered Dose = 0.1 × 83.2
Ordered Dose = 8.32 mg
⦁ Identify the available concentration
Available Concentration: 10 mg/mL
⦁ Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 8.32 ÷ 10
Volume to administer = 0.832 mL
⦁ Round to the nearest tenth
= 0.8 mL
A nurse is preparing to administer amoxicillin 775 mg PO. Available is amoxicillin oral suspension 400 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
⦁ Identify the ordered dose and available concentration
Ordered Dose: 775 mg
Available Concentration: 400 mg/5 mL
⦁ Calculate the volume to administer
Volume to administer = (Ordered Dose ÷ Concentration) × Volume
Volume to administer = (775 ÷ 400) × 5
Volume to administer = 1.9375 × 5
Volume to administer = 9.6875 mL
⦁ Round to the nearest whole number
= 10 mL
A nurse is preparing to administer 0.9% sodium chloride 1,200 mL IV to infuse over 8 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Calculation:
⦁ Identify the total volume and infusion time
Total Volume: 1,200 mL
Time: 8 hours
⦁ Calculate the infusion rate
Infusion rate = Total volume ÷ Time
Infusion rate = 1,200 ÷ 8
= 150 mL/hr
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