ATI dosage calculation Rn
fundamentals proctored assessment
3.2 questions with 100%Verified
detailed answers (RATED A+)
Showing 80 questions
Question 1:
A nurse is reviewing medications prescribed for a client. For which of the
following prescriptions should the nurse contact the provider for clarification?
A. Heparin 5,000 units subcutaneous every 12 hours
B. Digoxin 0.25 mg PO daily
C. Lisinopril 10 mg PO daily
D. Levothyroxine 150 mcg PO daily
Explanation
Correct Answer: B
Digoxin 0.25 mg PO daily: While this is a common maintenance dose, the nurse
should verify this prescription if the client's serum digoxin level is elevated or if
the client has renal impairment. Digoxin has a narrow therapeutic index (0.5-2
ng/mL), and toxicity can occur with standard doses in susceptible clients. The
nurse should check the client's most recent digoxin level, renal function, and
potassium levels before administering. A prescription without recent monitoring
parameters may require clarification.
,Heparin 5,000 units subcutaneous every 12 hours: This is a standard prophylactic
dose for preventing deep vein thrombosis. No clarification is typically needed for
this prescription.
Lisinopril 10 mg PO daily: This is a standard starting dose for hypertension. The
prescription is clear and within normal parameters.
Levothyroxine 150 mcg PO daily: This is a common maintenance dose for
hypothyroidism. No clarification is typically needed unless the client's thyroid
function tests indicate otherwise.
Question 2:
A nurse is preparing to administer amikacin 15 mg/kg/day IV in three divided
doses to a client who weighs 154 lb. The amount available is amikacin 250 mg/mL.
How many mL should the nurse administer per dose? (Round the answer to the
nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Correct Answer: 1.4 mL
To calculate the dosage of amikacin for a client who weighs 154 lb, the nurse
should first convert the weight to kilograms.
One kilogram is equal to 2.2 lb, so the client's weight in kilograms is 154 lb ÷ 2.2
lb/kg = 70 kg.
Next, determine the total daily dose by multiplying the weight by the prescribed
dose per kg: 15 mg/kg/day × 70 kg = 1,050 mg/day.
Then, divide the total daily dose by the number of doses per day to get the dose
per administration: 1,050 mg/day ÷ 3 doses/day = 350 mg/dose.
Finally, use the formula D/H × Q to find the volume to be administered, where D is
the desired dose, H is the dose on hand, and Q is the quantity: 350 mg ÷ 250 mg ×
1 mL = 1.4 mL.
Therefore, the nurse should administer 1.4 mL of amikacin per dose.
,Question 3:
A nurse is preparing to administer vancomycin 1 g intermittent IV bolus in 0.9%
sodium chloride 200 mL over 90 min. The drop factor on the manual IV tubing is
15 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
Correct Answer: 33 gtt/min
To calculate the manual IV flow rate, the nurse needs to use the following
formula:
Flow rate (gtt/min) = Volume (mL) × Drop factor (gtt/mL) ÷ Time (min)
Plugging in the given values:
Flow rate = 200 mL × 15 gtt/mL ÷ 90 min
Flow rate = 3,000 gtt ÷ 90 min
Flow rate = 33.33 gtt/min
Rounding to the nearest whole number gives 33 gtt/min.
Question 4:
A nurse is preparing to administer morphine 0.05 mg/kg via IV push to a client
who weighs 110 lb. Available is morphine 2 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
Correct Answer: 1.3 mL
, To calculate the dose of morphine for a client who weighs 110 lb, the nurse needs
to convert the weight to kilograms and multiply it by the prescribed dose.
One kilogram is equal to 2.2 lb, so the client's weight in kilograms is 110 lb ÷ 2.2
lb/kg = 50 kg.
The dose of morphine in milligrams is 50 kg × 0.05 mg/kg = 2.5 mg.
The nurse then needs to divide the dose in milligrams by the concentration of
morphine in the available solution, which is 2 mg/mL.
The volume of morphine in milliliters is 2.5 mg ÷ 2 mg/mL = 1.25 mL.
The nurse should round the answer to the nearest tenth, so the final answer is 1.3
mL.
Question 5:
A nurse is reviewing medications prescribed for a client. For which of the
following prescriptions should the nurse contact the provider for clarification?
A. Metformin 500 mg PO twice daily
B. Potassium chloride 20 mEq PO daily
C. Warfarin 5 mg PO daily with INR monitoring
D. Alprazolam 0.5 mg PO PRN anxiety
Explanation
Correct Answer: B
Potassium chloride 20 mEq PO daily: This prescription requires clarification
because it lacks the specific monitoring parameters or indication. Potassium
supplements can cause hyperkalemia, especially in clients with renal impairment
or those taking ACE inhibitors, ARBs, or potassium-sparing diuretics. The nurse
should verify the client's most recent potassium level before administering and
confirm the indication for supplementation.
Metformin 500 mg PO twice daily: This is a standard starting dose for type 2
diabetes mellitus. No clarification is typically needed.
fundamentals proctored assessment
3.2 questions with 100%Verified
detailed answers (RATED A+)
Showing 80 questions
Question 1:
A nurse is reviewing medications prescribed for a client. For which of the
following prescriptions should the nurse contact the provider for clarification?
A. Heparin 5,000 units subcutaneous every 12 hours
B. Digoxin 0.25 mg PO daily
C. Lisinopril 10 mg PO daily
D. Levothyroxine 150 mcg PO daily
Explanation
Correct Answer: B
Digoxin 0.25 mg PO daily: While this is a common maintenance dose, the nurse
should verify this prescription if the client's serum digoxin level is elevated or if
the client has renal impairment. Digoxin has a narrow therapeutic index (0.5-2
ng/mL), and toxicity can occur with standard doses in susceptible clients. The
nurse should check the client's most recent digoxin level, renal function, and
potassium levels before administering. A prescription without recent monitoring
parameters may require clarification.
,Heparin 5,000 units subcutaneous every 12 hours: This is a standard prophylactic
dose for preventing deep vein thrombosis. No clarification is typically needed for
this prescription.
Lisinopril 10 mg PO daily: This is a standard starting dose for hypertension. The
prescription is clear and within normal parameters.
Levothyroxine 150 mcg PO daily: This is a common maintenance dose for
hypothyroidism. No clarification is typically needed unless the client's thyroid
function tests indicate otherwise.
Question 2:
A nurse is preparing to administer amikacin 15 mg/kg/day IV in three divided
doses to a client who weighs 154 lb. The amount available is amikacin 250 mg/mL.
How many mL should the nurse administer per dose? (Round the answer to the
nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Correct Answer: 1.4 mL
To calculate the dosage of amikacin for a client who weighs 154 lb, the nurse
should first convert the weight to kilograms.
One kilogram is equal to 2.2 lb, so the client's weight in kilograms is 154 lb ÷ 2.2
lb/kg = 70 kg.
Next, determine the total daily dose by multiplying the weight by the prescribed
dose per kg: 15 mg/kg/day × 70 kg = 1,050 mg/day.
Then, divide the total daily dose by the number of doses per day to get the dose
per administration: 1,050 mg/day ÷ 3 doses/day = 350 mg/dose.
Finally, use the formula D/H × Q to find the volume to be administered, where D is
the desired dose, H is the dose on hand, and Q is the quantity: 350 mg ÷ 250 mg ×
1 mL = 1.4 mL.
Therefore, the nurse should administer 1.4 mL of amikacin per dose.
,Question 3:
A nurse is preparing to administer vancomycin 1 g intermittent IV bolus in 0.9%
sodium chloride 200 mL over 90 min. The drop factor on the manual IV tubing is
15 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
Correct Answer: 33 gtt/min
To calculate the manual IV flow rate, the nurse needs to use the following
formula:
Flow rate (gtt/min) = Volume (mL) × Drop factor (gtt/mL) ÷ Time (min)
Plugging in the given values:
Flow rate = 200 mL × 15 gtt/mL ÷ 90 min
Flow rate = 3,000 gtt ÷ 90 min
Flow rate = 33.33 gtt/min
Rounding to the nearest whole number gives 33 gtt/min.
Question 4:
A nurse is preparing to administer morphine 0.05 mg/kg via IV push to a client
who weighs 110 lb. Available is morphine 2 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
Correct Answer: 1.3 mL
, To calculate the dose of morphine for a client who weighs 110 lb, the nurse needs
to convert the weight to kilograms and multiply it by the prescribed dose.
One kilogram is equal to 2.2 lb, so the client's weight in kilograms is 110 lb ÷ 2.2
lb/kg = 50 kg.
The dose of morphine in milligrams is 50 kg × 0.05 mg/kg = 2.5 mg.
The nurse then needs to divide the dose in milligrams by the concentration of
morphine in the available solution, which is 2 mg/mL.
The volume of morphine in milliliters is 2.5 mg ÷ 2 mg/mL = 1.25 mL.
The nurse should round the answer to the nearest tenth, so the final answer is 1.3
mL.
Question 5:
A nurse is reviewing medications prescribed for a client. For which of the
following prescriptions should the nurse contact the provider for clarification?
A. Metformin 500 mg PO twice daily
B. Potassium chloride 20 mEq PO daily
C. Warfarin 5 mg PO daily with INR monitoring
D. Alprazolam 0.5 mg PO PRN anxiety
Explanation
Correct Answer: B
Potassium chloride 20 mEq PO daily: This prescription requires clarification
because it lacks the specific monitoring parameters or indication. Potassium
supplements can cause hyperkalemia, especially in clients with renal impairment
or those taking ACE inhibitors, ARBs, or potassium-sparing diuretics. The nurse
should verify the client's most recent potassium level before administering and
confirm the indication for supplementation.
Metformin 500 mg PO twice daily: This is a standard starting dose for type 2
diabetes mellitus. No clarification is typically needed.
