Question

The client has an order for amoxicillin 0.45 g orally. The medication available is amoxicillin 125 mg/5 mL. How many mL will the nurse administer? mL (If needed, round to the nearest whole number.)

Answer 1

Correct Answers:

18

Rationale :

🧮The prescribed dose is 0.45 g, which must be converted to milligrams to match the available concentration.

📏Since 1 gram equals 1000 mg, 0.45 g becomes 450 mg, ensuring correct unit consistency.

🧴The available concentration is 125 mg per 5 mL, meaning each milliliter contains 25 mg.

📊Dividing 450 mg by 25 mg per mL gives 18 mL, which is the correct administration volume.

📌Core Message

Correct medication calculation requires unit conversion first, then dividing the ordered dose by concentration per mL to determine volume.

Answer 2

Correct Answers:

1

Rationale :

🥄The prescribed dose is 10 mg, and the available concentration is 10 mg per 5 mL.

⚖️Since the ordered dose equals the amount in 5 mL, the nurse administers 5 mL.

📐One teaspoon equals 5 mL, which converts the liquid measurement into household units.

✅Therefore, 5 mL equals 1 teaspoon, making 1 tsp the correct answer.

📌Core Message

When the ordered dose equals the concentration per 5 mL, administer 5 mL, which equals 1 teaspoon.

Answer 3

Correct Answers:

22.5

Rationale :

⚗️The prescribed dose is 60 mEq, and the available medication provides 40 mEq in 15 mL.

📊Set up a proportion to determine how many milliliters contain 60 mEq.

📈Since 40 mEq corresponds to 15 mL, dividing 60 by 40 and multiplying by 15 gives the correct volume.

👉The calculation results in 22.5 mL, rounded to the nearest tenth as required.

📌Core Message

Use ratio and proportion when concentration is given as mEq per mL to calculate accurate volume.

Answer 4

Correct Answers:

0.4

Rationale :

💊The ordered dose is 0.1 mg, but the available medication is labeled in micrograms, requiring unit conversion.

🔄Since 1 mg equals 1000 mcg, 0.1 mg converts to 100 mcg.

📦The vial contains 250 mcg per mL, meaning each milliliter contains 250 mcg.

🧾Dividing 100 mcg by 250 mcg per mL results in 0.4 mL, which is the correct dose.

📌Core Message

Accurate IV medication dosing requires unit conversion between mg and mcg before dividing by the available concentration.

Answer 5

Correct Answers:

0.8

Rationale :

🧬The prescribed dose is 250 mcg, while the available concentration is 0.3 mg per mL, requiring conversion.

🔁Since 1 mg equals 1000 mcg, 0.3 mg equals 300 mcg per mL.

📏This means each milliliter contains 300 mcg of medication.

📉Dividing 250 mcg by 300 mcg per mL gives 0.83 mL, which rounds to 0.8 mL.

📌Core Message

Always ensure unit consistency before calculating volume to prevent dosage errors.

Answer 6

Correct Answers:

0.5

Rationale :

💠The ordered dose is 125 mcg, while the available tablet is 0.25 mg, requiring conversion.

🔬Since 0.25 mg equals 250 mcg, each tablet contains 250 mcg.

📊Dividing 125 mcg by 250 mcg per tablet determines the number of tablets required.

✂️The calculation equals 0.5 tablet, appropriate because the tablet is scored.

📌Core Message

When tablets are scored, fractional dosing is possible after converting to matching units.

Answer 7

Correct Answers:

1.5

Rationale :

💊The prescribed dose is 37.5 mg, and each tablet contains 25 mg.

📐Dividing the ordered dose by the amount per tablet determines required tablets.

📊37.5 divided by 25 equals 1.5 tablets.

✔️Since the tablet is scored, administering one and a half tablets is appropriate.

📌Core Message

Tablet dosing requires dividing the ordered mg by mg per tablet to determine correct quantity.

Answer 8

Correct Answers:

0.5

Rationale :

💉The ordered dose is 5 mg, and the available concentration is 10 mg per mL.

📏This means each milliliter contains 10 mg.

📊Dividing 5 mg by 10 mg per mL determines the volume to administer.

🧾The result is 0.5 mL, rounded to the nearest tenth.

📌Core Message

IV medication volume equals ordered dose divided by concentration per mL.

Answer 9

Correct Answers:

1.4

Rationale :

⚖️The prescribed dose is 1 mg per kg, requiring conversion of weight from pounds to kilograms.

🔄Since 1 kg equals 2.2 lbs, 242 lbs converts to 110 kg.

🧮At 1 mg per kg, the total dose required is 110 mg.

📦With a concentration of 80 mg per mL, dividing 110 mg by 80 mg per mL equals 1.375 mL, which rounds to 1.4 mL.

📌Core Message

Weight-based dosing requires converting pounds to kilograms, then dividing by available concentration.

Answer 10

Correct Answers:

10

Rationale :

💊The ordered dose is 25 mg, and the available medication contains 12.5 mg per 5 mL.

📐Since 12.5 mg is in 5 mL, doubling the dose to 25 mg doubles the volume.

📊Therefore, 25 mg equals 10 mL.

✔️No further conversion is required because units already match.

📌Core Message

When units already match, use direct proportional reasoning to calculate liquid medication volume.

NR226 Medication Calculation Exam-1

No.

1 :
The client has an order for amoxicillin 0.45 g orally. The medication available is amoxicillin 125 mg/5 mL. How many mL will the nurse administer? mL (If needed, round to the nearest whole number.)

2 :
The client has an order for morphine 10 mg orally. The medication available is morphine 10 mg/5 mL. How many teaspoons will the nurse administer? 1 tsp (If needed, round to the nearest whole number.)

3 :
The client has an order for potassium 60 mEq orally. The medication available is potassium 40 mEq/15 mL. How many mL will the nurse administer? mL. (If needed, round to the nearest tenth.)

4 :
The client has an order for digoxin 0.1 mg IVP. The medication available is digoxin 250 mcg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

5 :
The client has an order for cyanocobalamin 250 mcg subcutaneously. The medication available is cyanocobalamin 0.3 mg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

6 :
The client has an order for digoxin 125 mcg orally. The medication available is digoxin 0.25 mg/scored tablet. How many tablets will the nurse administer? 1 tablet(s) (If needed, round to the nearest tenth.)

7 :
The client has an order for hydrochlorothiazide 37.5 mg orally. The medication available is hydrochlorothiazide 25 mg/scored tablet. How many tablets will the nurse administer? 1 tablet(s) (If needed, round to the nearest tenth.)

8 :
The client has an order for furosemide 5 mg IVP. The medication available is furosemide 10 mg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

9 :
The healthcare provider ordered enoxaparin 1 mg/kg subcutaneously. The medication available is enoxaparin 80 mg/mL. The client weighs 242 lbs. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

10 :
The client has an order for diphenhydramine 25 mg orally. The medication available is diphenhydramine 12.5 mg/5 mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest whole number.)

NR226 Medication Calculation Exam-1

No.

1 : The client has an order for amoxicillin 0.45 g orally. The medication available is amoxicillin 125 mg/5 mL. How many mL will the nurse administer? mL (If needed, round to the nearest whole number.)

2 : The client has an order for morphine 10 mg orally. The medication available is morphine 10 mg/5 mL. How many teaspoons will the nurse administer? 1 tsp (If needed, round to the nearest whole number.)

3 : The client has an order for potassium 60 mEq orally. The medication available is potassium 40 mEq/15 mL. How many mL will the nurse administer? mL. (If needed, round to the nearest tenth.)

4 : The client has an order for digoxin 0.1 mg IVP. The medication available is digoxin 250 mcg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

5 : The client has an order for cyanocobalamin 250 mcg subcutaneously. The medication available is cyanocobalamin 0.3 mg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

6 : The client has an order for digoxin 125 mcg orally. The medication available is digoxin 0.25 mg/scored tablet. How many tablets will the nurse administer? 1 tablet(s) (If needed, round to the nearest tenth.)

7 : The client has an order for hydrochlorothiazide 37.5 mg orally. The medication available is hydrochlorothiazide 25 mg/scored tablet. How many tablets will the nurse administer? 1 tablet(s) (If needed, round to the nearest tenth.)

8 : The client has an order for furosemide 5 mg IVP. The medication available is furosemide 10 mg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

9 : The healthcare provider ordered enoxaparin 1 mg/kg subcutaneously. The medication available is enoxaparin 80 mg/mL. The client weighs 242 lbs. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

10 : The client has an order for diphenhydramine 25 mg orally. The medication available is diphenhydramine 12.5 mg/5 mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest whole number.)

1 :
The client has an order for amoxicillin 0.45 g orally. The medication available is amoxicillin 125 mg/5 mL. How many mL will the nurse administer? mL (If needed, round to the nearest whole number.)

2 :
The client has an order for morphine 10 mg orally. The medication available is morphine 10 mg/5 mL. How many teaspoons will the nurse administer? 1 tsp (If needed, round to the nearest whole number.)

3 :
The client has an order for potassium 60 mEq orally. The medication available is potassium 40 mEq/15 mL. How many mL will the nurse administer? mL. (If needed, round to the nearest tenth.)

4 :
The client has an order for digoxin 0.1 mg IVP. The medication available is digoxin 250 mcg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

5 :
The client has an order for cyanocobalamin 250 mcg subcutaneously. The medication available is cyanocobalamin 0.3 mg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

6 :
The client has an order for digoxin 125 mcg orally. The medication available is digoxin 0.25 mg/scored tablet. How many tablets will the nurse administer? 1 tablet(s) (If needed, round to the nearest tenth.)

7 :
The client has an order for hydrochlorothiazide 37.5 mg orally. The medication available is hydrochlorothiazide 25 mg/scored tablet. How many tablets will the nurse administer? 1 tablet(s) (If needed, round to the nearest tenth.)

8 :
The client has an order for furosemide 5 mg IVP. The medication available is furosemide 10 mg/mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

9 :
The healthcare provider ordered enoxaparin 1 mg/kg subcutaneously. The medication available is enoxaparin 80 mg/mL. The client weighs 242 lbs. How many mL will the nurse administer? 1 mL (If needed, round to the nearest tenth.)

10 :
The client has an order for diphenhydramine 25 mg orally. The medication available is diphenhydramine 12.5 mg/5 mL. How many mL will the nurse administer? 1 mL (If needed, round to the nearest whole number.)