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Chapter 10 Calculations. Dosage Calculation in Special Populations (Pediatrics & Body Weight). Objectives. To become familiar with the various formulae used to calculate pediatric doses. Identify when to use each of the pediatric dosing equations. Utilize the different dosing equations.

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Chapter 10 Calculations

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Chapter 10 calculations

Chapter 10 Calculations

Dosage Calculation in Special Populations

(Pediatrics & Body Weight)


Objectives

Objectives

  • To become familiar with the various formulae used to calculate pediatric doses.

  • Identify when to use each of the pediatric dosing equations.

  • Utilize the different dosing equations.


The basic concept

The Basic Concept……..

  • Children are not Adults.

  • They are smaller.

  • These equations give us a method of estimating the relative size of the child compared to an adult.

  • NOTE: All of these equations are just an estimate.


Equations

Equations


More equations

More Equations

  • BSA from KG and CM

  • BSA from POUNDS and INCHES


Chapter 10 calculations

AD = Adult Dose


Hierarchy

Hierarchy

BSA Equation > BSA Nomogram > Weight > Age


Let s try some

Let’s Try Some….


Chapter 10 calculations

  • A child weighs 76 lb and the physician orders medication for the child at 10 mg/kg tid. What is the dose of the medication that is to be given?


Chapter 10 calculations

  • A child who weighs 54 lb is to take a medication based on an adult dose of 450 mg per dose. What should be the dose for the child?


Chapter 10 calculations

  • A physician orders a medication for an 8-month-old child. The adult dose is 60 mg tid. What would be the dose for the child?


Chapter 10 calculations

  • A physician orders an antibiotic for a 4-year-old child. The adult dose is 250 mg/dose. What is the dose for the child?


Chapter 10 calculations

  • A physician orders a medication for a child who weighs 48 lb. The appropriate dosage is 5 mg/kg/day in four divided doses.

  • What weight of medication should be given to the child per day?

  • What weight of medication should be given to the child with each dose?

  • If the medication is available as 2 mg/5 mL, what volume of medication should be administered to the child?


Chapter 10 calculations

  • A physician orders a medication for a child who weighs 42 lb. The usual dose of the medication is 5 to 10 mg/kg/day in two divided doses.

  • What is the total strength of medication the child would receive if 5 mg/kg/d is used?

  • What is the amount of medication with each dose?


Chapter 10 calculations

  • FROM PREVIOUS PAGE

  • If the medicine is ordered at 15 mg/kg/d, what would be the total strength of the medication?

  • What would be the strength of a single dose?

  • What would be the dose at 20 mg/kg/d?


Chapter 10 calculations

  • A child is 46 inches tall and weighs 69 lb. The usual adult dose of a medication is 60 mg tid. What is the strength of medication that the child should receive with each dose?


Chapter 10 calculations

  • A 6-month-old child is to receive a medication that has an adult dose of 125 mcg daily. What is the dose for the child?

  • If the medication is available as 0.1215 mg/5 mL, what would be the dose for the child?


Chapter 10 calculations

  • A child who weighs 52 lb is to receive 0.2 mg/kg/d in four divided doses. The available medication is 0.025 mg/mL. What is the dosage for the child for the child for the day?

  • What is the strength of medication for the child with each dose?

  • What is the volume of medication that should be administered to the child


Chapter 10 calculations

  • A child weighs 76 lb and is 125 cm tall. The adult dose of a medication is 1 g.The medication is available as 125 mg/4 mL. What is the dose of the medication for the child?

  • What is the volume of medication that should be administered to the child?

  • What would be the proper utensil for administering this medication by mouth?


Questions

Questions?


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