Question

The healthcare provider prescribes a loading dose of digoxin 0.6 mg intravenously (IV) for a client with heart failure (HF). The nurse obtains digoxin Injection 500 mcg in 2 mL vial from the electronic medication system. How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth)

Answer 1

Correct Answers:

2.4

Rationale :

🟣Step 1: Convert the prescribed dose to micrograms (mcg)

0.6 mg=600 mcg

🟣Step 2: Identify the available concentration

500 mcg in 2 mL

250 mcg/mL

🟣Step 3: Use the volume–dose formula

Volume (mL)=Dose (mcg)/Concentration (mcg/mL)

600/250

2.4 mL

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Answer 2

Correct Answers:

1.2

Rationale :

🟢 Step 1: Convert weight from pounds to kilograms

132 lb×0.45

59.4 kg

🟢 Step 2: Calculate prescribed dose per administration

1 mg/kg×59.4 kg

59.4 mg

🟢 Step 3: Use the dose–volume formula

Available concentration: 60 mg in 0.6 mL

Volume per dose=59.4/60×0.6

0.594 mL

🟢 Step 4: Multiply by frequency (every 12 hours = 2 doses/day)

0.594×2

1.188

Rounded to nearest tenth

1.2 mL

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Answer 3

Correct Answers:

21

Rationale :

🔵 Step 1: Convert liters to milliliters

2 L=2000 mL

🔵 Step 2: Convert hours to minutes

24 hours=24×60=1440 minutes

🔵 Step 3: Use the IV flow rate formula

gtt/min=Total volume (mL)×Drop factor (gtt/mL)/Time (min)

2000×15/1440

30000/1440

20.83

🔵 Step 4: Round to the nearest whole number

21 gtt/min

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Answer 4

Correct Answers:

6

Rationale :

🟣 Step 1: Convert oxytocin concentration to milliunits per mL

20 units=20,000 milliunits

20,000 milliunits/1000 mL

20 milliunits/mL

🟣 Step 2: Use the formula to find mL/min

mL/min=Desired dose (milliunits/min)/Concentration (milliunits/mL)

2/20

0.1 mL/min

🟣 Step 3: Convert to mL/hour

0.1 mL/min×60

6 mL/hour

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Answer 5

Correct Answers:

0.8

Rationale :

🟢Step 1: Identify the prescribed dose and available concentration

Prescribed dose = 8,200 units

Available concentration = 10,000 units/mL

🟢 Step 2: Use the dose–volume formula

Volume (mL)=Prescribed dose (units)/Concentration (units/mL)

8200/10000

0.82 mL

🟢 Step 3: Round to the nearest tenth

0.8 mL

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Answer 6

Correct Answers:

4.8

Rationale :

🟣Step 1: Identify the prescribed dose and concentration

Prescribed dose = 120 mg

Available concentration = 100 mg / 4 mL

🟣Step 2: Use the dose–volume formula

Volume mL=120 mg/100 mg×4 mL

1.2×4

4.8 mL

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Answer 7

Correct Answers:

20

Rationale :

🟢Step 1: Identify prescribed dose and concentration

Dose per administration 200 mg

Frequency Twice a day → 2 doses/day

Available concentration 100 mg per 5 mL

🟢 Step 2: Calculate volume per dose

200 mg/100 mg×5 mL

2×5

10 mL

🟢 Step 3: Multiply by number of doses per day

10 mL/dose×2

20 mL/day

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Answer 8

Correct Answers:

0.9

Rationale :

🔵Step 1: Calculate volume for hydromorphone

Prescribed dose: 4 mg

Concentration: 10 mg/mL

4 mg/10 mg/mL

0.4 mL

🔵 Step 2: Calculate volume for hydroxyzine

Prescribed dose: 25 mg

Concentration: 50 mg/mL

25 mg/50 mg/mL

0.5 mL

🔵 Step 3: Add the two volume

0.4 mL+0.5 mL

0.9 mL

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Answer 9

Correct Answers:

17

Rationale :

🟣Step 1: Identify known values

Total volume to infuse: 150 mL

Infusion time: 90 minutes

Drop factor: 10 gtt/mL

🟣 Step 2: Use the IV drip rate formula

gtt/min=Volume (mL)×Drop factor (gtt/mL)/Time (min)

150×10/90

1500/90

16.67

🟣 Step 3: Round to the nearest whole number

17 gtt/min

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Answer 10

Correct Answers:

7.5

Rationale :

🔵Step 1: Identify total drug amount and volume after reconstitution

Total drug: 750 mg

Total volume after reconstitution: 100 mL

🔵Step 2: Use the concentration formula

Concentration (mg/mL)=Total drug (mg)/Total volume (mL)

750/100

7.5 mg/mL

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RN-Hesi Dosage Calculation-WGU

No.

2 :
The healthcare provider prescribes enoxaparin 1 mg/kg SUBQ every 12 hours for a client who weighs 132 pounds. The medication is available in 60 mg/0.6 mL prefilled syringe. How many mL should the nurse administer per day? (Enter numerical value only.)

3 :
The healthcare provider prescribes 2 L of 5% dextrose in water (DW).IV to infuse in 24 hours. The IV administration set delivers 15 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

4 :
A client receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)

7 :
The healthcare provider prescribes cefixime oral suspension 200 mg PO twice a day for an older adult who has difficulty swallowing tablets. The bottle is labeled, "Cefixime for Oral Suspension, USP 100 mg per 5 mL." How many mL should the nurse administer daily? (Enter numerical value only.)

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RN-Hesi Dosage Calculation-WGU

No.

2 : The healthcare provider prescribes enoxaparin 1 mg/kg SUBQ every 12 hours for a client who weighs 132 pounds. The medication is available in 60 mg/0.6 mL prefilled syringe. How many mL should the nurse administer per day? (Enter numerical value only.)

3 : The healthcare provider prescribes 2 L of 5% dextrose in water (DW).IV to infuse in 24 hours. The IV administration set delivers 15 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

4 : A client receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)

7 : The healthcare provider prescribes cefixime oral suspension 200 mg PO twice a day for an older adult who has difficulty swallowing tablets. The bottle is labeled, "Cefixime for Oral Suspension, USP 100 mg per 5 mL." How many mL should the nurse administer daily? (Enter numerical value only.)

2 :
The healthcare provider prescribes enoxaparin 1 mg/kg SUBQ every 12 hours for a client who weighs 132 pounds. The medication is available in 60 mg/0.6 mL prefilled syringe. How many mL should the nurse administer per day? (Enter numerical value only.)

3 :
The healthcare provider prescribes 2 L of 5% dextrose in water (DW).IV to infuse in 24 hours. The IV administration set delivers 15 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

4 :
A client receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)

7 :
The healthcare provider prescribes cefixime oral suspension 200 mg PO twice a day for an older adult who has difficulty swallowing tablets. The bottle is labeled, "Cefixime for Oral Suspension, USP 100 mg per 5 mL." How many mL should the nurse administer daily? (Enter numerical value only.)