NCLEX : Dosage
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Example Questions
Example Question #2 : Nclex
The nurse is preparing to administer 250,000 units of medication to a patient. The ampule sent from the pharmacy contains 500,000 units/mL. How many mL should the nurse administer?
1.2 mL
0.5 mL
2.5 mL
0 mL
0.5 mL
The medication dose formula is as follows: Milliliters to be administered = (Dose to be administered)/(Available solution). Thus, the calculation for this problem is (250,000 units)/(500,000 units/mL) = 0.5 mL
Example Question #4 : Nclex
The nurse is preparing to administer 100,000 units of medication to a patient. The ampule sent from the pharmacy contains 600,000 units/mL. How many mL should the nurse administer?
0 mL
2 mL
2.4 mL
1.5 mL
0 mL
The medication dose formula is as follows: Milliliters to be administered = (Dose to be administered)/(Available solution). Thus, the calculation for this problem is (100,000 units)/(600,000 units/mL) = 0 mL mL
Example Question #4 : Pharmacology
The nurse is preparing a bag of heparin sodium solution with a mix of 120,000 units/400 mL intravenously. At what rate should the nurse set the infusion pump if intending to deliver 1800 units/hr?
2.2 mL/hr
1.3 mL/hr
7.8 mL/hr
6.0 mL/hr
6.0 mL/hr
The required rate can be calculated as follows: (Delivered units/hr x mL)/units. Thus, the answer can be calculated as (1800 units/hr x 400 mL)/120,000 units = 6.0 mL/hr
Example Question #2 : Nclex
Hayden is a 9-year-old boy who has been admitted to the emergency room with a fever. He weighs 71lbs. If the dosing guideline for acetaminophen is 
First convert Hayden's weight from pounds to kilograms. This is done by dividing Hayden's weight by 2.2 because 1 pound is 2.2 kilograms.
Next set up the equation as follows:
Solve for 
Example Question #11 : Pharmacology
An infant on his 14th day of life enters the emergency room. He are tachycardic, has poor skin turgor, and is crying without the formation of tears. The nurse knows that this child is showing symptoms of dehydration. The doctor orders fluid replacement of 544ml over 5 hours. What is the drip rate of the infusion?
Use the following formula to calculate drip rate:
Example Question #2 : Dosage
An 11-month-old child weighing 8.6kg enters the emergency room with symptoms of a severe respiratory infection. Her physician suspects bacterial origin and prescribes Ampicillin. The guidelines state that Ampicillin is to be administered as 
The child's weight is already in kilograms. There is no need to change the unit of weight.
Set up the equation as follows
Solve for 
By solving for 
Next, divide the dose by 4 because the dose is to be given every 6 hours.
By calculating this number, we have determined that the child should receive a dose of 107.5mg every six hours. If Ampicillin comes packaged with 250mg in 50mL, we can set up an equation to determine how many milliliters we need to reach 107.5mg.
Solve for 
Example Question #12 : General Concepts
Evelynn is a 3-year-old girl who has been bitten by her family's dog. She has had an incision and drainage (I&D) of her left hand to prevent infection and she has been prescribed cefazolin. The guidelines for cefazolin are 
First convert Evelynn's weight from pounds to kilograms. This is done by dividing Evelynn's weight by 2.2 because 1 pound is 2.2 kilograms.
Set up the equation as follows:
Solve for 
Example Question #12 : Pharmacology
The nurse must administer 1 liter of sodium chloride solution over 8 hours. What is the appropriate rate in milliliters per hour that the nurse must set on the IV pump?
In order to calculate the proper rate in milliliters per hour 
Example Question #5 : Dosage
The nurse prepares to administer naproxen to his patient. The physician has ordered 
The medication label reads 
First, convert the available dose to the dose ordered by the physician.
Divide the prescribed daily dose by the dose in each tablet to get the number of tablets that equal the daily dose.
Example Question #2 : Dosage
The nurse administers 
The drops per minute equation is:
Round to nearest tenth:
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