Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
Ordered: Insulin lispro 24 units subcut 4 times daily, with meals and at bedtime, for 90 days.
On hand: 1,000 unit vials of insulin lispro
Note: Partial vials are not dispensed.
What is the amount to dispense?
A. 7 vials
B. 3 vials
C. 8 vials
D. 9 vials
Calculation: Calculate the total daily dose in units. Total daily dose = 24 units/dose × 4 doses/day = 96 units/day. Calculate the total units needed for the 90-day supply. Total units = 96 units/day × 90 days = 8640 units. Total units per vial = 1000 units. Calculate the number of vials needed. Vials needed = Total units / Units per vial = 8640 units / 1000 units/vial = 8.64 vials. Account for partial vials not being dispensed. Vials to dispense = 9 vials.
This question is an excerpt from Nurse Dive's nursing test bank - Dosage calculation proctored exam (hellen fluid college). Take the full exam now
Full Explanation
Calculation:
- Calculate the total daily dose in units.
Total daily dose = 24 units/dose × 4 doses/day
= 96 units/day.
- Calculate the total units needed for the 90-day supply.
Total units = 96 units/day × 90 days
= 8640 units.
Total units per vial = 1000 units.
- Calculate the number of vials needed.
Vials needed = Total units / Units per vial
= 8640 units / 1000 units/vial
= 8.64 vials.
- Account for partial vials not being dispensed.
Vials to dispense = 9 vials.
Similar Questions
Once reconstituted according to instructions, how much solution is contained in the bottle of Vantin?
Full Explanation
Based on the label provided, the amount of solution contained in the bottle of Vantin once reconstituted is 50 mL. The lable states (50 mL when mixed)
Calculate the amount to administer:____________ (Round decimal appropriately)
Ordered: Imitrex 8 mg subcut prn headache
On hand: Imitrex injection 6 mg/0.5 mL
Full Explanation
Desired dose = 8 mg.
Concentration of the available medication = 6 mg in 0.5 mL.
Concentration = 6 mg / 0.5 mL
= 12 mg/mL.
- Calculate the volume in milliliters (mL) to administer.
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
= 8 mg / 12 mg/mL
= 0.6666... mL.
- Rounding to the nearest hundredth
= 0.67 mL.
How many grams of dextrose are in 1,000 mL of D10W?
A. 1,000 grams
B. 10 grams
C. 100 grams
Calculation: D10W stands for Dextrose 10% in Water.2 This means the solution contains 10 grams of dextrose for every 100 mL of solution. Calculate the total grams of dextrose in 1,000 mL. Using a ratio: 10 g/100 mL =x/1000 mL. To solve for x: x= (10 g×1000 mL)/ 100mL =10 g×10 =100 grams
D. 1 gram
Full Explanation
Calculation:
D10W stands for Dextrose 10% in Water.2 This means the solution contains 10 grams of dextrose for every 100 mL of solution.
- Calculate the total grams of dextrose in 1,000 mL.
Using a ratio:
10 g/100 mL =x/1000 mL.
To solve for x:
x= (10 g×1000 mL)/ 100mL
=10 g×10
=100 grams