Dosage Calc Flashcards
What is the formula for calculating dosage?
Dosage = (Desired dose / Available dose) x Quantity
True or False: Dosage calculations only involve oral medications.
False
Fill in the blank: To calculate the dosage for a patient, you need to know the __________ and the available concentration.
desired dose
A patient requires 500 mg of a medication. The available tablets are 250 mg each. How many tablets should be administered?
2 tablets
What is the unit of measurement commonly used for liquid medications?
Milliliters (mL)
True or False: You can round dosages to the nearest whole number for all medications.
False
If a medication is ordered as 1.5 g, how many milligrams is this?
1500 mg
What is the formula to convert kilograms to pounds?
Weight in pounds = Weight in kg x 2.2
A nurse needs to administer 0.75 L of IV fluid. How many milliliters is this?
750 mL
If a medication is available in a concentration of 100 mg/mL, how many mL are needed for a 400 mg dose?
4 mL
What does the term ‘therapeutic range’ refer to?
The concentration range in which a drug is effective without being toxic.
Fill in the blank: When calculating dosages, always check the __________ before administration.
patient’s allergies
A doctor prescribes 2.5 mg of a medication, and it is available as 1 mg tablets. How many tablets should be given?
2.5 tablets
What is the purpose of dosage calculation in nursing?
To ensure safe and effective medication administration.
True or False: Dosage calculations are the same for all types of medications.
False
If a patient needs 1.2 g of a medication and the vial contains 300 mg, how many vials are required?
4 vials
What is a common method for calculating pediatric dosages?
Using weight in kg to determine the dose based on mg/kg.
A nurse must give 1500 mL of a solution over 12 hours. What is the rate in mL/hour?
125 mL/hour
Fill in the blank: The __________ method is used to calculate IV flow rates.
gtt/min
A medication is ordered at 5 mg/kg for a patient weighing 70 kg. What is the total dose?
350 mg
True or False: It is important to double-check calculations before administering medications.
True
If a solution contains 500 mg of a drug in 250 mL, what is the concentration in mg/mL?
2 mg/mL
What is the significance of ‘pediatric dosing guidelines’?
They help determine safe dosages for children based on age and weight.
A patient is prescribed 1.5 L of fluid to be infused in 10 hours. What is the infusion rate in mL/hour?
150 mL/hour
