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Ati dosage calculation rn adult medical surgical proctored 3.2 retake Proctored
Total Questions : 28
Showing 10 questions, Sign in for moreA nurse is preparing to administer amoxicillin 750 mg PO. Available is amoxicillin liquid suspension 250 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.) ________ mL
Explanation
Step 1 is to identify the ordered dose and available concentration
Ordered dose: 750 mg
Available: 250 mg / 5 mL
Step 2 is to calculate the volume to administer in milliliters (mL)
(Ordered dose ÷ Available dose) × Available volume = Result
(750 ÷ 250) × 5 = Result
750 ÷ 250 = 3
3 × 5 = 15
Step 3 is to round to the nearest whole number
15 = 15
Answer: 15
A nurse is preparing to administer acetaminophen 15 mg/kg via intermittent IV bolus to a client who weighs 99 lb. The amount available is acetaminophen 1,000 mg/100 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.) ________ mL
Explanation
Step 1 is to convert the client's weight from pounds (lb) to kilograms (kg)
Weight in kg = 99 ÷ 2.2
99 ÷ 2.2 = 45 kg
Step 2 is to calculate the total dose in milligrams (mg)
Total mg dose = Weight in kg × Dosage (mg/kg)
45 × 15 = 675 mg
Step 3 is to calculate the volume to administer in milliliters (mL)
(Ordered dose ÷ Available dose) × Available volume = Result
(675 ÷ 1,000) × 100 = Result
675 ÷ 1,000 = 0.675
0.675 × 100 = 67.5
Step 4 is to round to the nearest whole number
67.5 ≈ 68
Answer: 68
A nurse is preparing to administer 12 L lactated Ringer’s IV to infuse over 24 hr. Half of the fluid is to be administered in the first 8 hr. The nurse should set the IV pump to deliver how many mL/hr during the first 8 hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.) ________ mL/hr
Explanation
Step 1 is to convert the total volume from Liters (L) to milliliters (mL)
Total mL = 12 × 1,000
12 × 1,000 = 12,000 mL
Step 2 is to calculate the volume to be administered in the first 8 hours (half of the total)
Volume for first 8 hr = 12,000 ÷ 2
12,000 ÷ 2 = 6,000 mL
Step 3 is to calculate the flow rate in mL per hour
mL/hr = Volume ÷ Time
6,000 ÷ 8 = 750
Step 4 is to round to the nearest whole number
750 = 750
Answer: 750
A nurse is preparing to administer phenytoin 125 mg oral suspension to a client who has epilepsy. Which of the following information should the nurse interpret from the medication label? (Refer to the medication label below.)
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.) ________ mL/hr
Explanation
Step 1 is to identify the total volume to be infused and the total time
Total volume = 1,200 mL
Total time = 8 hours
Step 2 is to calculate the flow rate in mL per hour
mL/hr = Total volume ÷ Total hours
1,200 ÷ 8 = 150
Step 3 is to round to the nearest whole number
150 = 150
Answer: 150
A nurse is preparing to administer ampicillin 500 mg IM every 6 hr. Available is ampicillin 500 mg vial. The package insert instructs adding 1.8 mL of sterile water to yield ampicillin 250 mg/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.) ________ mL
Explanation
Step 1 is to identify the ordered dose and the concentration after reconstitution
Ordered dose: 500 mg
Available concentration: 250 mg / 1 mL
Step 2 is to calculate the volume to administer in milliliters (mL)
(Ordered dose ÷ Available dose) × Available volume = Result
(500 ÷ 250) × 1 = Result
500 ÷ 250 = 2
2 × 1 = 2
Step 3 is to round to the nearest whole number
2 = 2
Answer: 2
A nurse is preparing to administer darbepoetin 0.45 mcg/kg subcutaneous once weekly to a client who weighs 190 lb. The amount available is darbepoetin 300 mcg/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.) ________ mL
Explanation
Step 1 is to convert the client's weight from pounds (lb) to kilograms (kg)
Weight in kg = 190 ÷ 2.2
190 ÷ 2.2 = 86.3636... kg
Step 2 is to calculate the total dose in micrograms (mcg)
Total mcg dose = Weight in kg × Dosage (mcg/kg)
86.3636... × 0.45 = 38.8636... mcg
Step 3 is to calculate the volume to administer in milliliters (mL)
(Ordered dose ÷ Available dose) × Available volume = Result
(38.8636... ÷ 300) × 1 = Result
38.8636... ÷ 300 = 0.1295...
0.1295... × 1 = 0.1295...
Step 4 is to round to the nearest tenth
0.1295... ≈ 0.1
Answer: 0.1mL
A nurse is preparing to administer dextrose 5% in 0.45% sodium chloride 3 L IV to infuse over 24 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.) ________ mL/hr
Explanation
Step 1 is to convert the total volume from Liters (L) to milliliters (mL)
Total mL = 3 × 1,000
3 × 1,000 = 3,000 mL
Step 2 is to calculate the flow rate in mL per hour
mL/hr = Total volume ÷ Total hours
3,000 ÷ 24 = 125
Step 3 is to round to the nearest whole number
125 = 125
Answer: 125 mL/hr
A nurse is preparing to administer belimumab 10 mg/kg via intermittent IV bolus to a client who weighs 136 lb. Available is belimumab 80 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.) ________ mL
Explanation
Step 1 is to convert the client's weight from pounds (lb) to kilograms (kg)
Weight in kg = 136 ÷ 2.2
136 ÷ 2.2 = 61.8181... kg
Step 2 is to calculate the total dose in milligrams (mg)
Total mg dose = Weight in kg × Dosage (mg/kg)
61.8181... × 10 = 618.1818... mg
Step 3 is to calculate the volume to administer in milliliters (mL)
(Ordered dose ÷ Available dose) × Available volume = Result
(618.1818... ÷ 80) × 1 = Result
618.1818... ÷ 80 = 7.7272...
7.7272... × 1 = 7.7272...
Step 4 is to round to the nearest whole number
7.7272... ≈ 8
Answer: 8
A nurse is preparing to administer 0.45% sodium chloride 2.5 L IV to infuse over 24 hr. How many mL should the nurse administer per hour? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.) ________ mL/hr
Explanation
Step 1 is to convert the total volume from Liters (L) to milliliters (mL)
Total mL = 2.5 × 1,000
2.5 × 1,000 = 2,500 mL
Step 2 is to calculate the flow rate in mL per hour
mL/hr = Total volume ÷ Total hours
2,500 ÷ 24 = 104.1666...
Step 3 is to round to the nearest whole number
104.1666... ≈ 104
Answer: 104
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