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Nu 405 medical calculations proctored exam
Total Questions : 20
Showing 10 questions, Sign in for moreOrder: potassium chloride oral solution 10 mEq
On hand: 20 mEq/15 ml
How many ml should the nurse administer?
Explanation
Identify the desired dose and the available concentration.
Desired dose: 10 mEq
Dose on hand: 20 mEq
Volume on hand: 15 mL
Calculate the volume to administer in milliliters (mL).
Volume (mL) = (Desired Dose / Dose on Hand) x Volume on Hand
= (10 mEq / 20 mEq) x 15 mL
= 0.5 x 15 mL
= 7.5 mL
Order: Percocet 2 tabs PO every four hours prn moderate pain of 4-6 on the 0-10 pain scale
Based on the label below, how much acetaminophen would the nurse be giving in a 24-hour period if they administered this dose every four hours?
Explanation
Determine the amount of acetaminophen per tablet.
The label states: 5 mg/325 mg (Oxycodone/Acetaminophen).
Acetaminophen per tablet = 325 mg
Calculate the total dose of acetaminophen administered per single dose.
Order: 2 tabs PO every four hours.
Acetaminophen per dose (mg) = 2 tablets x 325mg/ tablet
Acetaminophen per dose (mg) = 650 mg
Determine the number of doses administered in 24 hours.
Frequency: Every four hours.
Doses in 24 hours = 24 hrs/ 4 hrs/ dose
= 6 doses.
Calculate the total amount of acetaminophen administered in 24 hours.
Total acetaminophen (mg) = Acetaminophen per dose (mg) × Doses in 24 hours
= 650mg/dose×6doses
= 3900mg.
Order: 1 liter of normal saline over eight hours
The nurse hangs 1 liter of normal saline at 0900. At what time would the infusion be complete?
Enter your answer in military time.
Explanation
Start time = 0900 (military time).
Duration = 8 hours.
Calculate the infusion completion time.
Completion time = Start time + Duration
= 0900 + 8 hours
= 1700.
Order: 1 liter of D5LR to infuse over eight hours
How many ml/hr should the nurse set the infusion pump at?
Explanation
Convert the total volume from liters (L) to milliliters (mL).
Total Volume: 1 Liter
1 Liter = 1000 mL
Total volume (mL) = 1 Liter x 1000 mL/Liter
= 1000 mL.
Total time = 8 hours.
Calculate the infusion rate in milliliters per hour (mL/hr).
Infusion rate (mL/hr) = Total volume (mL) / Total time (hr)
= 1000 mL / 8 hr
= 125 mL/hr.
Order: vancomycin 1 gram in 250 ml of NS to infuse over two hours
How should the nurse program the infusion pump?
Explanation
Total volume = 250 mL.
Total time = 2 hours.
Calculate the infusion rate in milliliters per hour (mL/hr).
Infusion rate (mL/hr) = Total volume (mL) / Total time (hr)
= 250 mL / 2 hr
= 125 mL/hr.
Order: divalproex sodium (Depakote) sprinkles 500 mg po BID
On hand: divalproex sodium (Depakote) 125 mg/capsule
How many capsules should the nurse administer?
Explanation
Desired dose: 500 mg ("BID" indicates twice a day, but the question asks for the dose per administration).
Dose on hand: 125 mg/capsule.
Calculate the number of capsules to administer per dose.
Number of capsules = Desired Dose (mg) / Dose on Hand (mg/capsule)
= 500 mg / 125 mg/capsule
= 4 capsules.
Order: furosemide (Lasix) 80 mg IV push now
On hand: 10 mg/1 ml
How many ml should the nurse administer?
Explanation
Desired dose = 80 mg.
Available concentration = 10 mg/1 mL.
Calculate the volume to administer in milliliters (mL).
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
= 80 mg / (10 mg / 1 mL)
= 80 mg / 10 mg/mL
= 8 mL.
Order: 6 units of regular insulin and 10 units of NPH insulin at 0730 subcutaneously.
The nurse will mix the insulins in the same syringe.
What is the total number of units of insulin(s) the nurse must draw up in an insulin syringe to administer the correct dose?
Explanation
Dose of Regular insulin = 6 units.
Dose of NPH insulin = 10 units.
Calculate the total number of units to draw up in the syringe.
Total units = Dose of Regular insulin + Dose of NPH insulin
= 6 units + 10 units
= 16 units.
Order: metoclopramide (Reglan) 20 mg IM stat for postop nausea
On hand: 10 mg/1 ml
How many ml should the nurse administer?
Explanation
Desired dose = 20 mg.
Available concentration = 10 mg/1 mL.
Calculate the volume to administer in milliliters (mL).
Volume (mL) = Desired Dose (mg) / Available Concentration (mg/mL)
= 20 mg / (10 mg / 1 mL)
= 20 mg / 10 mg/mL
= 2 mL.
Order: Pneumovax 23 vaccine IM 0.5 ml
In what IM anatomical site should this vaccine be given by the nurse?
Explanation
For Pneumovax 23 vaccine IM 0.5 mL, the recommended intramuscular injection site for adults is the deltoid muscle of the upper arm. For infants and small children (under 2 years), the anterolateral thigh (vastus lateralis) is used.
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