Pharmacology Dosage Calculations Quiz

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Questions and Answers

How many milliliters will you need to administer for a dose of 750 mg of vancomycin from a 1 g vial that contains 50 mg/mL?

5 mL

20 mL

10 mL

15 mL (correct)

What is NOT required on a physician’s order for medication administration?

The dosage amount

The drug name

The physician's signature (correct)

The patient's full name

Which type of diluent is typically used for reconstituting medications like Penicillin G?

Dextrose solution

Sterile water for injection (correct)

Normal saline

Lactic acid solution

What is the conversion factor from grams to milligrams?

1 g = 1 000 mg Signup and view all the answers

After withdrawing the dose of medication from a vial, what should NOT be done with the vial?

Store it in the refrigerator Signup and view all the answers

When documenting how a medication was reconstituted, what information is most crucial to include?

The name of the diluent used Signup and view all the answers

Which of the following is NOT a requirement when performing medication calculations?

Calculate only using the formula method, disregarding ratios. Signup and view all the answers

What is the proper rounding method for adult weight in kg during dosage calculations?

Round to the nearest tenth. Signup and view all the answers

How many milliseconds are in one second?

1 000 ms Signup and view all the answers

What is the correct way to write a dosage of 0.5 mL?

0.5 mL Signup and view all the answers

What is the recommended action regarding the administration of scored tablets?

Break scored tablets only when necessary. Signup and view all the answers

What amount of medication does one ounce equate to in milliliters?

30 mL Signup and view all the answers

When rounding pediatric answers, what is the nearest precision to use?

Nearest hundredth Signup and view all the answers

Which format is correct when documenting weights greater than 4 digits?

16 000 Signup and view all the answers

In a dosage calculation, if the desired dose is in milligrams and the available dose is in grams, what must be done?

Convert the available dose to milligrams. Signup and view all the answers

If you are performing a medication dosage calculation and end up with the answer of 5.3 mg, how should this be reported?

Report as 5.3 mg. Signup and view all the answers

What is the correct way to express a tablet count when the tablet is not scored?

2 tablets Signup and view all the answers

Where should a zero be placed when writing a decimal dosage?

Before the decimal Signup and view all the answers

What is the proper way to indicate milliliters without using unnecessary symbols?

0.93 mL Signup and view all the answers

Which of the following is NOT included in the rules for dosage calculations?

Always use fractions Signup and view all the answers

What step should come after cleansing the top of the medication vial when reconstituting medication?

Remove the protective cap off the diluent vial Signup and view all the answers

Study Notes

Pharmacology 3 Course Overview

Course Instructor: Ashley Martin, RN, BSCN
Course Dates: September 2024
Midterm 1 (Med Math): September 9th, 0900. 25% weighting, up to two rewrites allowed
IV Med Testing: September 26th, all day. 10% weighting, up to two re-tests allowed
Discussions (LO5 & LO6): LO5 due October 20th at midnight, LO6 due October 27th at midnight. 20% weighting
Lab Prep Activities (LO1 & LO2): LO1 due September 4th, 0900; LO2 due September 12th, 0900. 5% weighting
Final Exam (Comprehensive): December 17th, 0900. 40% weighting

LO1: reconstitution of powdered meds

Components:
- Med Math (Review Med Dosage Calculations)
- Reconstitution (Single Strength Meds)
- Reconstitution (Multiple Strength Meds)
- Demonstrate Reconstitution

Medication Calculation Review

Dose Conversion: Ensure desired and available doses are in the same units
Calculation Methods: Use formulas, ration and proportion methods
Rounding: Pediatric calculations to the nearest hundredth. Adult answers: nearest tenth. Less than 1 mL to nearest hundredth.
Documentation: Never round during a calculation, only at the end. Always place a zero in front of a decimal. Do not unnecessarily add zeros after a decimal

Dosage Calculations - Conversion Tables

1g = 1,000 mg
1 kg = 1,000 g
1 mg = 1,000 mcg
1 mg = 1,000 µg
1kg = 2.2 lbs
1 L = 1,000 mL
1 oz = 30 mL
1 teaspoon = 5 mL
1 tablespoon = 15 mL

Dosage Calculations: General Rules

Weight: Rounding adult weights to the nearest tenth, pediatric weights to the nearest hundredth.
Adult answers: Rounding adult answers to the nearest tenth (e.g., 2.1 mL, not 2.06 mL).
Pediatric answers: Rounding pediatric answers to nearest hundredth (e.g., 2.06 mL, not 2.1 mL).
Less than 1 mL: Rounding answers less than 1 mL to nearest hundredth (e.g., 0.93 mL, not 0.9 mL). Avoid rounding within a formula, only on the final answer
Use decimals for dosages, not fractions.

Key Rights for Drug Administration

Right Patient
Right Medication
Right Dose
Right Route
Right Time
Right Documentation
Right Reason
Right Prescriber

Reconstitution Single Strength Meds

Topic on reconstitution Single Strength medications.

Reconstitution Multiple Strength Meds

Topic on reconstitution on Multiple Strength medications.

Additional Information

Med Math Exam #1: September 9th at 0900, minimum 80% needed to pass, up to two rewrites permitted.
Documentation: Document reconstitution activities and chosen diluents in nursing notes
Review Lab Prep Activity: Review of lab preparation activities for calculations

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Description

Test your knowledge on pharmacology dosage calculations with this quiz covering various topics such as medication administration, conversions, and reconstitution requirements. Perfect for nursing students or medical professionals looking to refresh their skills in medication management.