Chapter 52 Dosage Calculations

Which of the following is the basic unit to measure volume in the metric system?

liter

The basic unit to measure weight in the metric system is the

gram

Which of the following refers to the amount of space a drug occupies?

volume

Which of the following is the metric equivalent to 0.001 liter?

1 milliliter (mL)

Which of the following is not a an equivalent measure between the metric system and the apothecary system?

30mL = 1 fl oz

Which of the following is a comparison of an apothecary measurement and it's equivalent within the apothecary system?

1 fl oz = 8 fl dr

Which of the following is the apothecary equivalent to 30 mL?

1 fluid ounce

What is the metric equivalent of 1000 mL?

1 liter

The metric equivalent of 1 liter is

1000 milliliters

The metric equivalent of 0.001 gram is

1 milligram

Which of the following is the metric equivalent of 1 g?

1000 mg

What is the apothecary equivalent of 8 fl dr

1 fl oz

Which of the following is a correct equivalent within the household system?

60 drops = 1 teaspoon

I'm the household measurement system, 8 oz is equivalent to

1 c or 1 cup

How many capsules will you give if the physician orders 500 mg of ampicillin, and each capsule contains 250 mg?

2 caps

How many capsules will you give if the doctor orders 30 mg of Adalat, and each capsule contains 10 mg?

3 capsules

How many tablets will you give if the physician orders 120 mg of thyroid and each tablet contains 30 mg?

4 tabs

Which of the following is the apothecary equivalent to 30 mL in the metric system?

1 fluid ounce

Mr. Clark is receiving chemotherapy for lung cancer, and the chemotherapeutic agent is causing severe nausea and vomiting. The physician has ordered 5mg Compazine IM. You have Compazine in a 10 mL multidose vial that provides the drug as 5 mg/mL. How many mL of Compazine will you administer to Mr. Clark?

1 mL

Rosie has a three-year-old child who has a confirmed bacterial pneumonia caused by streptococcus pneumonia, The physician orders Zinacef 50 mg/kg/day IM q6h. Fosi weighs 30 pounds. How many milligrams of the medication or Rosie receive in one dose?

170 mg

Mrs. Eckstein is in the office because her rheumatoid arthritis has been flaring up lately and she in in considerable pain. The physician asks you to administer a 20 mg IM injection of Depo-Medrol. The available medication is a 5 mL multidose vial that provides 40 mg/mL. How much will you inject?

0.5ml

The physician has ordered 30 mg/kg/day for an 8-year-old child who weighs 55 pounds. The child should receive _____ of this medicine per dose.

5 mL

How much amoxicillin is in each 1 mL of this medicine?

50 mg

Physician has ordered 500 mg of amoxicillin three times daily for a 25-year-old woman. How much of the medication should the woman take at each dose?

2 tsp

When a meter is divided by 100, the result is

1 centimeter

If the basic metric unit is divided by _____, the resulting unit prefix is micro-.

1 million

To convert from kilograms to grams, move the decimal point

3 places to the right

Convert 45880 mL to liters

45.88 L

Convert 78450 mg to grams

78.45 g

Convert 8.09 L to milliliters

8090 mL

The abbreviation for drop is

gtt

The abbreviation for tablespoons is

Tbsp

An equivalent measure for 5 mL is ____.

1 tsp

Equivalent measures for 8 gl oz are

1 c and 240 mL

Patient drink one cup of coffee, 1/2 of juice, and three 8-oz glasses of water. What is the metric equivalent, in liters, of the total amount of fluid the patient drank?

1.08

The physician ordered 45 mL of a medication. How many tablespoons of the medication should be given?

3 tbsp

The patient received a pint of medication from the pharmacy. This is equivalent to _____

16 fluid ounces

32 ounces equals

2 pounds

Bella weighs 110 lbs. How many kilograms does she weigh?

50 kg

Sam has a prescription for a medication that says to take 3 fluid ounces. He has a measuring spoon set and will use the tablespoon measure. How many tablespoons of Medication will he need to take the prescribed dose?

6 tablespoons

Taylor's mother is supposed to give him 2 tablespoons of a medication. She only has a teaspoon measure available. How many teaspoons should she give him?

6 teaspoons

Body Surface Area (BSA) is stated in

square meters

The physician has ordered Depakene syrup 15 mg/kg/day divided into 2 doses per day for a child who weighs 33 lbs. you have on hand Depakene syrup 250mg/5mL. How much Depakene will you administer per dose?

2.5 mL

How often should you check to see if the answers to your dosage calculations are reasonable?

Every time you perform a dosage calculation

How much erythromycin is contained in each milliliter of the erythromycin ethylsuccinate according to the package label?

40 mg

The physician has ordered erythropoietin 40 mg/kg/day po q6h for a child who weighs 33 pounds. Refer to the label shown in the figure. How much will you administer per dose?

3.75

Convert 1560 mL to ounces

52 ounces

Convert 10 oz to milliliters

300 mL

Convert 352 lbs

160 kg

Convert 70kg to pounds

154 lbs

The amount of space a drug occupies is its _____

volume

The doctor orders 650 mg of acetaminophen, but the tablets available contain only 325 mg. You will give the patient _____ tablet(s)

Two

You are asked to give a patient Adalat 30 mg but have only 10 mg tablets on hand. You will need to give the patient _____ tablet(s)

Three

Physician ordered 120 mg of a medication to be administered PO. The available medication contains only 30 mg per tablet. You have to give the patient ______ tablets

Four

The dr ordered 0.5 g of ampicillin. Dosage available is 250 mg capsules. You will give _____ capsules.

Two

The physician ordered gabapentin 2400 mg per day to be given every 6 hours. Dosage available is 600 mg tablets. The patient will take ______ tab(s) per dose.

Two

The doctor ordered propranolol 1 mg/kg/day in four divided doses for a 9-year-old child weighing 70.4 pounds. Available is propranolol oral solution that provides 4 mg/mL. The child should receive _____ mL per dose.

Two

The doctor ordered 500 mg ampicillin suspension four times daily. The dosage available is 250 mg per 5 mL. The patient will take _____ mL per dose

Ten

The doctor ordered 350 mg of the drug. You have 100 mg scored tablets. You will have to give _____ tablets for the dose.

3.5

The physician ordered Ceclor 0.374 g PO bid. Dosage available is an oral suspension of 187 mg per 5 mL. You will give _____ mL per dose

Ten

The doctor ordered enoxaparin 30 mg subcutaneously. Solution on hand is 300 mg/3mL. You will administer _____ mL.

0.3

The gram is the basic unit of ____ in the metric system

weight

The basic unit of _____ in the metric system is the liter

volume

The patient is supposed to take 5 mL of medication four times per day for six days. The pharmacist to dispense a total of _____ oz of medication to the patient

.4

Last year, The patient weighed 190 KG. 10 months after the surgery, the patient had lost 176 lbs. the patient now weighs _____ kg.

110

Carson's plan of care is to gain 2 lbs each month for the next 4 months. He now weighs 40 kg. At the end of 4 months, Carson should weigh _____ pounds

96

The patient is ordered to take 3 tsp of medicine three times per day. The patient should take _____ mL per each dose of medication.

15

Mrs. Adamson is to take 2 tbsp of medication every six hours for 10 days. The pharmacy will have to dispense a total of ______ fluid ounces for this prescription.

40

Max is to take 25 mL of a medication. However, he will be using a teaspoon at home. His dose will be _____ tsp.

5

The set of skills used to determine body surface area is called a(n) _____

Nomogram

Whenever you perform a dosage calculation, you should think about your answer and determine if it is _____

Reasonable

The three systems of measurement used in the United States for pharmacology and drug administration are in a metric, __________, and the household systems.

Apothecary

The method of dosage calculation in which you set up equivalent fractions and solve the unknown is the _____ method

Proportion

I'm the _____ method of dosage calculation, you use the basic equation D/H x Q to find the correct dose.

Formula

When very precise medication dosages are required, complex calculations or nomogram are used to calculate the patient's _____

BSA or Body Surface Area