# Section 2 Solving dosage problems

Save this PDF as:

Size: px
Start display at page:

## Transcription

1 Section 2 Solving dosage problems Whether your organization uses a bulk medication administration system or a unit-dose administration system to prepare to administer pediatric medications, you may find that the dose the physician orders is different from that which is available. You will need to determine how much of the medication on hand should be given to the infant or child. In addition, you are ultimately responsible for verifying the dosage of any medication that you administer before you administer it. Pediatric patients vary widely in weight from small infants to large adolescents. Dosages vary widely, as well. You will not find a standard dose of a drug that is safe for all ages and sizes. Because of this, the doses of medication given to children also vary tremendously. Determining the correct dose for a child usually involves calculating the dose based on either the child s weight or the child s body surface area (BSA).

2 12 Pediatric Medication Administration The most common way to calculate the dose of medicine is based on the child s weight. For example, a drug manufacturer may state its dosage recommendation as: 75 mg/kg/day divided every eight hours. When you know the weight of the child, it is easy to determine the correct dose of the medication for the child. If the child weighs 10 kg, then the child will get 750 mg/day divided every eight hours (that is, 750/3 or 250 mg/dose). Another way to calculate the dose of medication appropriate for a child is using the body surface area (BSA). This method isn t used quite as often as the weight-based calculation. It is frequently used with chemotherapeutic drugs. The BSA accounts for the fact that not all children who weigh the same look the same. For example, a child who weighs 25 pounds may be very tall (45 inches) and slender, while another child weighing 25 pounds may be very short (30 inches) and compact. Although each child has the same weight, each has a different amount of body surface area and a different body composition. The BSA is estimated using a special formula or the West Nomogram, which is a special graph. To calculate the BSA, you must know both the height and weight of the child. Using the formula, the taller child would have a BSA of 0.62 m 2 and the shorter child s would have a BSA of 0.48 m 2. If a drug were prescribed to be given 150 mg/m2/day, then the 1st child (45 inches tall) would receive 90 mg/day, while the 2nd child (30 inches tall) would receive 72 mg/day. If you determined doses on weight alone, they would both receive the same dose.

3 Solving dosage problems 13 Ratio method Basic conversions It is often necessary to be able to convert measurements into metric equivalents as well as to convert dose volumes. This self-study presents one commonly used method the ratio method for solving dosage problems. The ratio method requires that you learn two ratios. The following ratio the simple ratio helps you convert simple measurements: Given proportion: Desired amount Unknown amount (U) Let s look at some examples of conversions. Example 1 How many micrograms are there in 0.5 mg? 1. Set up the equation using the equivalent table (Appendix A). You know that 1 mg is the same as 1000 mcg. This given proportion becomes the left side of the equation. Since 0.5 mg is the desired amount, you will place this known quantity over the unknown (U) quantity on the right side of the equation. 1 mg = 0.5 mg 1000 mcg U mcg 2. Cross multiply as follows: 1 mg 0.5 mg 1000 mcg U mcg 1 x U = 1000 x 0.5 U = 500 mcg Result: There are 500 mcg in 0.5 mg.

4 14 Pediatric Medication Administration Important! When you set up an equation, it is critical that you include the units of measurement with the numbers (for example, mg, ml, kg, minutes). After you set up the equation but before you do the math make sure that the units of measurement on the top left side are the same as the units of measurement on the top right side of the equation. The bottom left and the bottom right also need to be in the same units. If you find that you are working with three or more different units of measurement, you need to break the problem down into two or more steps. You can only deal with two different units of measurement at a time. Example 2: How many kilograms are equal to 44 pounds? 1. Set up the equation using the equivalency table (see Appendix A). You see that 2.2 pounds is the same as 1 kg. This given proportion becomes the left side of the equation. Since 44 pounds is the desired equivalent, you will place this known quantity over the unknown (U) quantity on the right side of the equation. 2.2 lb = 44 lb 1 kg U kg 2. Cross multiply as follows: 2.2 lb 44 lb 1 kg U kg 2.2 x U = 44 x x U 2.2 = U = 20 kg Result: 20 kg = 44 pounds.

5 Solving dosage problems 15 Important! Suppose you said that 1 kg is the same as 2.2 pounds (lb) and set the given proportion as: 1 kg 2.2 lb This would be acceptable because the mathematical statement is still correct. The right side of the equation would need to have the unknown (U) quantity on the top, because you don t know how many kg ( U kg ) equals 44 pounds. Remember that you have to keep your units the same on both the top left side and the top right side of the equation. The same thing goes for the bottom left and bottom right, both sides need to be in the same units. Example 3: How many milliliters (ml) are in 9 ounces (oz)? 1. Set up the equation. 1 kg = U kg 2.2 lb 44 lb Note that when you cross multiply, you get the same equation as before. 1 oz = 9 oz 30 ml U ml 2. Cross multiply as follows: 1 x 44 = 2.2 x U Divide both sides by 2.2 so that you get 1 U on one side = 2.2 x U kg = U Result: 20 kg = 44 pounds 1 oz 9 oz 30 ml U ml

6 16 Pediatric Medication Administration 1 x U = 9 x 30 U = 270 Result: 270 ml = 9 ounces. Complex conversions The ratio method of calculating conversions helps you solve more complex problems, as well. The following ratio the complex ratio helps you solve more complex dosage problems: Tip: The word per usually means division or ratio. 10 mg per 1 ml is written 10 mg/1 ml. Dose on hand = Desired amount Quantity on hand Unknown amount (U) Example 1: The physician has ordered 2 mg of morphine. The vial you have on hand is labeled, Morphine, 10 mg per 1 ml. How many ml of morphine will you draw up to administer to your patient? 1. Write your ratio as follows: 10 mg = 2 mg 1 ml U ml 2. Cross multiply as follows: 10 mg 2 mg 1 ml U ml 10 U = 2 x 1 10 U = 2 U = 2 10 or 0.2 ml Result: You would draw up 0.2 ml of morphine from the vial to obtain a dose of 2 mg for your patient.

7 Solving dosage problems 17 Example 2: The physician has ordered 0.5 gram of cefazolin to be given IV. Cefazolin is packaged in a dry form of 1 gram, and the package directions state to add 2.5 ml sterile water to reconstitute the dry volume to a liquid volume of 3 ml. How many ml will you give to obtain a dose of 0.5 gram? 1. Write your ratio as follows: 1 gram = 0.5 gram 3 ml U ml 2. Cross multiply as follows: 1 gram 0.5 gram 3 ml U ml 1 x U = 0.5 x 3 U = 1.5 ml Result: You will give 1.5 ml of the reconstituted cefazolin to obtain a dose of 0.5 gram. Example 3: The physician has ordered 2 micrograms of a drug per kilogram patient body weight per minute, to be given intravenously. The pharmacy has sent a mixture of 20 mg of the drug in 50 ml IV solution in a syringe. Your patient weighs 44 pounds. How many ml will you give per hour? 1. Begin with basic conversions. Because the drug was ordered on a per kilogram basis, you first need to change the patient s body weight in pounds to kilograms. 2.2 lb = 44 lb 1 kg U kg 2.2 U = 44 U = 20 kg Your 44-pound patient weighs 20 kg.

8 18 Pediatric Medication Administration 2. The second basic conversion you need is to determine the number of micrograms (mcg) that you will administer per kilogram (kg) of your patient s body weight. You now know that your patient weighs 20 kg, so simple multiplication will give you the total dose in micrograms per minute: the order dose was 2 mcg per kg per minute, which is: U = 40 1 kg = 20 kg 2 mcg U mcg 3. The third basic conversion you need is to change micrograms per minute to micrograms per hour. Remember that the question was how many ml to administer per hour, because many IV monitoring systems are only set up to count volume per hour. 1 minute = 60 minutes 40 mcg U mcg 1 x U = 40 x 60 U = 2400 mcg/hr Your patient requires 2400 mcg of the drug per hour. 4. The final basic conversion you need is to change the dose in mcg to the dose in mg. The pharmacy sent a mixture of 20 mg drug in 50 ml IV solution in a syringe. From your conversion table, you know that 1 mg = 1000 mcg, so you can set up your ratio as follows: 1000 mcg = 2400 mcg 1 mg U mg 1000 x U = 2400 x U = 2400 U = U = 2.4 mg You need to administer 2.4 mg of the drug per hour. You also have all the necessary conversions to determine the number of ml per hour to administer of this IV solution.

9 Solving dosage problems Complete your ratio. Remember, you know that you have 20 mg of the drug in 50 ml IV solution in a syringe. You need to calculate how many ml is equivalent to 2.4 mg of the drug. 20 mg = 2.4 mg 50 ml U ml 20 mg 2.4 mg 50 ml U ml 20 x U = 2.4 x U = 120 U = U = 6 ml 6. Finally, you need to determine the IV rate you would set the pump for, in ml/hour. Result: You will need to set the pump to administer 6 ml of the IV solution per hour to obtain the ordered dose of 2 mcg of drug per kg per minute for your 44 pound patient. Tip: For multi-step problems, start by converting pounds to kilograms, micrograms to grams, and minutes to hours. The order is not important. Take care with decimal places, and don t do too much calculating in your head. A misplaced decimal point could result in giving a dose that is 10 times too small or too large.

12 22 Pediatric Medication Administration Check your answers 1. a. 0.6 gm = 600 mg 1 gm = 0.6 gm 1000 mg U mg 1 x U = 1000 x 0.6 U = 600 mg 0.6 gm = 600 mg b. 1 mg = 1000 mcg (by definition) c. 25 kg = 55 lb 1 kg = 25 kg 2.2 lb U lb 1 x U = 25 x 2.2 U = 55 d. 1 tsp = 5 ml (by definition) e. 1 cc = 1 ml (by definition) f. 1 Tbsp = 15 ml (by definition) 2. 2 tablets First change lb to kg: 2.2 lb = 36 lb 1 kg U kg Then cross multiply: 2.2 x U = 36 x 1 36/2.2 = U = kg Next calculate dose: 1 kg = kg 10 mg U mg

13 Solving dosage problems 23 1 x U = 10 x U = Finally, calculate number of tablets per dose: 80 mg = 163 mg 1 tab U tab 80 x U = 163 U = 163/80 U = 2 tablets 3. Give 4.5 ml per dose 250 mg = 225 mg 5 ml U ml 250 x U = 5 x U = 1,125 U = ml per dose 125 mg = 200 mg 5 ml U ml 125 U = 5 x U = 1,000 U = 1000/125 U = 8

14 24 Pediatric Medication Administration ml per hour First change lb to kg: 2.2 lb = 44 lb 1 kg U kg 2.2 x U = 44 x 1, so U = 44/2.2 U = 20 kg Dose = 5 mcg per kg per minute and patient weighs 20 kg 20 kg x 5 mcg = 100 mcg/min Dosage 100 mcg = U mcg 1 min 60 min 1 U = 100 x 60, so U = 6000 mcg Next convert mcg to mg: 1000 mcg = 6000 mcg 1 mg U mg 1000 U = 6000 U = 6 mg Lastly, convert dose in mg to volume in ml 15 mg = 6 mg 60 ml U ml 15 U = 6 x 60, so 15 U = 360 U = 24 ml

15 Solving dosage problems ml ml per hour ml ml ml ml ml per hour ml

### The Center for Nursing Excellence Calculations of Drug Dosages and Solutions

The Center for Nursing Excellence Calculations of Drug Dosages and Solutions Directions: This learning has been compiled to assist nurses who will be taking the Medication and Drug Calculation Test. You

### Metric System Calculations

Metric System Calculations Many of the calculations needed in nursing practice relate to the metric system. Below are two simple ways to remember some of the key calculations GRAMS MILLIGRAMS MICROGRAMS

### IV and Drug Calculations for Busy Paramedics

IV and Drug Calculations for Busy Paramedics By Kent R. Spitler, MSEd, RN, NREMT-P EMS Educator Charlotte, North Carolina Introduction Medication calculations can cause frustration for EMS providers. Math

### Example 3: Dilantin-125 is available as 125 mg/5 ml. Dilantin-125, 0.3 g PO, is ordered. How much should the nurse administer to the patient?

Drug Dosage & IV Rates Calculations Drug Dosage Calculations Drug dosage calculations are required when the amount of medication ordered (or desired) is different from what is available on hand for the

### Prefixes and their values: a. Micro (mc) [write out microgram] 1,000 micrograms = 1 milligram b. Milli (m) 1,000 milligrams = 1 gram g.

1 I. Prefixes and their values: a. Micro (mc) [write out microgram] i. Millionth ii. 1 microgram = 0.000001 gram iii. 1 microgram = 0.001 milligram 1. 1,000 micrograms = 1 milligram = 0.001 gram 2. 500

### Dosage Calculation Review

Dosage Calculation Review Review based on required readings selected from: 1 Pickar, G. (2007). Dosage calculation: A ratio-proportion approach (2nd ed.). Albany, NY: Delmar. ISBN 1-4180-1563-6 Upon completion

### If you have any questions, please do not hesitate to contact us. We look forward to meeting you!

Welcome to Children s Mercy. We are pleased that you will be joining the nursing staff. As the Education Specialists coordinating Nursing Orientation we look forward to meeting you this week. We want to

### LDU Maths, Stats and Numeracy Support. Metric Conversions

Metric Conversions Here are some metric weights arranged in size order, starting with the biggest:- Kg (kilogram) g (gram) mg (milligram) mcg (microgram) Each one is a thousand (1000) times smaller than

### CATEGORIES. Conversions - Weight. Conversions - Weight. Conversions - Weight. Conversions - Weight 3/26/2014. Calculations for Pharmacy Technicians

Calculations for Pharmacy Technicians CATEGORIES Conversions --- weight and volume --- Fahrenheit and Celsius Concentration --- mg/ml, percent and ratio Dosage Calculations --- retail and hospital ---

### PEDIATRIC AND ADULT DOSAGE CALCULATION BASED ON WEIGHT

PEDIATRIC AND ADULT DOSAGE CALCULATION BASED ON WEIGHT DOSAGE CALCULATION BASED ON WEIGHT: OBJECTIVES AFTER REVIEWING THIS CHAPTER, YOU SHOULD BE ABLE TO: 1. CONVERT BODY WEIGHT FROM POUNDS TO KILOGRAMS

### DRUG CALCULATIONS FOR REGISTERED NURSES ADULT SERVICES

Serving the people of north east Essex DRUG CALCULATIONS FOR REGISTERED NURSES ADULT SERVICES A Programmed Approach - It is essential you read this pack & practice the questions prior to your drug calculation

### OAKLAND UNIVERSITY SCHOOL OF NURSING

OAKLAND UNIVERSITY SCHOOL OF NURSING MEDICATION ADMINISTRATION MODULE A Basic (Sophomore Year) and Accelerated 2 nd Degree (1 st Semester) Nursing Programs Faculty: JOANN KAPA, MSN, RN Adjunct Instructor

### Bishop State Community College. Dosage Calculation Review Study Booklet

Bishop State Community College Dosage Calculation Review Study Booklet Table of Contents Page Numbers Conversion Table. 2 Conversions Facts. 3, 4 Conversion Practice Problems 5 Oral and Parenteral Calculations..

### Calculating Drug Dosages

Calculating Drug Dosages Calculating Doses from Prepared Strength Liquids, Tablets, and Capsules Calculating With Proportions 1. Convert to a consistent unit of measure. 2. Set up a proportion: Original

### Nursing 131 Household to Metric Conversion

Nursing 3 Household to Metric Conversion Slide 2 & 3 In the metric system liquid volumes are measured in milliliters or liters. Weight is measured in micrograms, milligrams, grams, or kilograms. liter

### Safe Medication Administration Preparation Guide C.O.R.E Essentials

Safe Medication Administration Preparation Guide C.O.R.E Essentials As a new IU Health employee, a portion of your orientation will focus on Safe Medication Administration practices. You will participate

### Paramedic Pediatric Medical Math Test

Paramedic Pediatric Medical Math Test Name: Date: Problem 1 Your 4 year old pediatric patient weighs 40 pounds. She is febrile. You need to administer acetaminophen (Tylenol) 15mg/kg. How many mg will

### MATH FOR NURSING AND ALLIED HEALTH Math for Science webpages originally created by

1 MATH FOR NURSING AND ALLIED HEALTH Math for Science webpages originally created by Stephanie S. Baiyasi, D.V.M., Instructor, Science Division, Delta College Karen Constan, B.A., Staff Tutor, Teaching/Learning

### Healthcare Math: Converting Measurements & Calculating Dosage per Body Weight

Healthcare Math: Converting Measurements & Calculating Dosage per Body Weight Industry: Healthcare Content Area: Mathematics Core Topics: Using the metric system, converting units of measurement using

### SUFFOLK COUNTY COMMUNITY COLLEGE NURSING DEPARTMENT MEDICATION ADMINISTRATION TEST NR 40 Practice test questions READ INSTRUCTIONS CAREFULLY

NR40 MEDICATION MATH TEST Practice questions page 1 SUFFOLK COUNTY COMMUNITY COLLEGE NURSING DEPARTMENT MEDICATION ADMINISTRATION TEST NR 40 Practice test questions READ INSTRUCTIONS CAREFULLY Students

### Pediatric Dosages CHAPTER 18 ALERT LEARNING OBJECTIVES

CHAPTER 18 Pediatric Dosages LEARNING OBJECTIVES On completion of the materials provided in this chapter, you will be able to perform computations accurately by mastering the following mathematical concepts:

### Bethel College. Upper Level Math/Drug Proficiency Fall Review 1 KEY

Bethel College Upper Level Math/Drug Proficiency Fall Review 1 KEY Calculate the following problems. Unless indicated, all medications involving ml greater than 1 should be rounded to the nearest tenth.

### BOSTON REED. Clinical Medical Assistant Program Math Review Handout. Addition... Page 2. Subtraction... Page 3. Multiplication...

BOSTON REED Clinical Medical Assistant Program Math Review Handout Contents Addition... Page 2 Subtraction... Page 3 Multiplication... Page 4 Decimals... Page 5 Decimal Practice Math... Page 7 Fractions...

### DRUG CALCULATIONS. Mathematical accuracy is a matter of life and death. [Keighley 1984]

DRUG CALCULATIONS Mathematical accuracy is a matter of life and death. [Keighley 1984] At the end of this practice sheet, you will be able to: Perform simple arithmetical tasks. Accurately calculate drug

### How to Solve Drug Dosage Problems

How to Solve Drug Dosage Problems General Information ----------------------------------------- ----- ------------------ page 2 Converting between units -----------------------------------------------------------

### Dosage Calculations Packet

Dosage Calculations Packet Unit I Basic Mathematics Review This unit will review Arabic and Roman numerals, fractions, decimals, percentage, and ratio and proportion. ARABIC AND ROMAN NUMERALS Arabic and

### paediatric nursing: calculation skills

Calculation skills p a e d i a t r i c n u r s i n g : c a l c u l a t i o n s k i l l s Written by: Meriel Hutton RGN, BA, CertEd, PhD, Senior Associate Dean (Undergraduate Studies, Nursing and Midwifery),

### MEASUREMENTS AND CONVERSIONS RATIO AND PROPORTIONS PERCENTAGES DILUTIONS

MEASUREMENTS AND CONVERSIONS RATIO AND PROPORTIONS PERCENTAGES DILUTIONS Hertha Darezzo, CPhT Our Lady of Fatima Hospital CharterCARE Health Partners I have no relevant financial relationships to disclose.

### Dosage Calculations INTRODUCTION. L earning Objectives CHAPTER

CHAPTER 5 Dosage Calculations L earning Objectives After completing this chapter, you should be able to: Solve one-step pharmaceutical dosage calculations. Set up a series of ratios and proportions to

### Ratio and Proportion Method. Calculation Refresher. To solve for x: Word Problems

Ratio and Proportion Method Calculation Refresher Robert H. Hoy, Pharm.D., BCPS Clinical Associate Manager Pharmacy Department Decatur Memorial Hospital Decatur, IL Speaker has nothing to disclose. A ratio

### When calculating how much of a drug is required, working with the formula helps the accuracy of the calculation.

DRUG CALCULATIONS When calculating how much of a drug is required, working with the formula helps the accuracy of the calculation. Always remember this formula: What you want X Quantity it comes in What

### LESSON ASSIGNMENT. After completing this lesson, you should be able to: 2-1. Compute medication dosages by the ratio and proportion method.

LESSON ASSIGNMENT LESSON 2 Pharmacology TEXT ASSIGNMENT Paragraphs 2-1 through 2-34. LESSON OBJECTIVES After completing this lesson, you should be able to: 2-1. Compute medication dosages by the ratio

### Units of Measurement and Conversions

Units of Measurement and Conversions OBJECTIVES/RATIONALE Basic math principles are important in providing quality client care when pharmaceuticals are involved and knowledge of various measurement systems

### Healthcare Math: Using the Metric System

Healthcare Math: Using the Metric System Industry: Healthcare Content Area: Mathematics Core Topics: Using the metric system, converting measurements within and between the metric and US customary systems,

### DRUG DOSE CALCULATIONS

FINDING THE ORDERED DOSE The ordered dose is the most simple dosage calculation for the prehospital care provider. In this type of problem, the paramedic is given an order to administer to a patient. There

### 2. Order: Nipride 500 mg IV in 250 ml D5w at 2 mcg/kg/min for a patient weighing 125 lb. Administer at ml/hr

1 Pharmacology Review Quiz: 1. Order: Xylocaine 1 g IV in 500 ml D5W at 3 mg/min. Set the infusion pump at ml/hr 2. Order: Nipride 500 mg IV in 250 ml D5w at 2 mcg/kg/min for a patient weighing 125 lb.

### Bethel College. Lower Level Math/Drug Proficiency Spring Review 1 KEY

Bethel College Lower Level Math/Drug Proficiency Spring Review 1 KEY Calculate the following problems. Unless indicated, all medications involving ml greater than 1 should be rounded to the nearest tenth.

### DRUG CALCULATION PRESENTATION. By: Donna Hess RN, MS

DRUG CALCULATION PRESENTATION By: Donna Hess RN, MS FIRST RULE: ALWAYS CHECK YOUR ANSWER! Second Rule: DOES YOUR ANSWER MAKE SENSE? Rules to Remember: When writing a whole number as a fraction, place the

### Medication Calculation Practice Problems

1 Medication Calculation Practice Problems Dosage Calculation 1. The order is for 60 mg of furosemide (Lasix) po daily. Available to the nurse is Lasix 40 mg/tablet. The nurse would administer how many

### Illinois Valley Community College Nursing Program Math Questions

Illinois Valley Community College Nursing Program Math Questions 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. How many mg of the antibiotic Penicillin would you prepare for a child who weighs

### Basic Medication Administration Exam LPN/LVN (BMAE-LPN/LVN) Study Guide

Basic Medication Administration Exam LPN/LVN (BMAE-LPN/LVN) Study Guide Review correct procedure and precautions for the following routes of administration: Ear drops Enteral feeding tube Eye drops IM,

### PART I PART I1. PART 111 Reconstituted Medications, 177. PART IV Parenteral Medication Calculations, 233

SECOND EDITION ~~------------------------------_/ PART I Essential Math Review tor Medication Calculations, 1 Essential Math Self-Assessment, 2 1 Essential Math Review, 5 2 Dimensional Analysis Calculations,

### Healthcare Math: Calculating Dosage

Healthcare Math: Calculating Dosage Industry: Healthcare Content Area: Mathematics Core Topics: Applying medical abbreviations to math problems, using formulas, solving algebraic equations Objective: Students

### Drug Dosage Practice Problems

Drug Dosage Practice Problems Topics covered: Metric Conversions ---------------------------------------------------------------- pg 2 General Conversions --------------------------------------------------------------

### BASIC MATH CALCULATIONS

BASIC MATH CALCULATIONS It is highly suggested you complete this packet to assist you in being successful with the basic math competency test. You will be allowed to use a BASIC calculator for all math

### Dosage and Calculation

Dosage and Calculation Module for Level 2: Medical-Surgical Nursing TABLE OF CONTENTS: PAGE I. Abbreviation 2 II. Systems of Measurement 4 III. Methods of Calculations: Dimensional Analysis 8 IV. Reconstitution

### Reconstitution of Solutions

Chapter 12 Reconstitution of Solutions Reconstitution Process of mixing and diluting solutions Some medications supplied in powder form and must be mixed with liquid before administration Parts of Solutions

### Advance IV Therapy Module. Example 1. 3mg. 3mg min = 45

Advance IV Therapy Module Eample A patient is to receive Lidocaine at 3mg/. Supplied is a one liter bag of D 5 W containing Lidocaine 4g. Calculate the infusion rate in ml/. First, identify the doctor

### Maths for Healthcare Professionals

Maths for Healthcare Professionals Mathematics Skills Guide All the information that you require to enable you to pass the mathematics tests within your course is contained within. Contents Fractions Page

### Maths for Nurses: Numeracy: The Essentials

Maths for Nurses: Numeracy: The Essentials This booklet will provide an overview of the basic numeracy skills for Nursing students. If you have any problems in answering the questions within the booklet

### Don t Make Me Think: Essential Pharmacy Math for Pharmacy Technicians Made Easy

J & D Educational Services, Inc. In association and co-sponsorship with Texas Tech University HSC School of Pharmacy Provides continuing education for certified pharmacy technicians. Texas Tech University

### UNIVERSITY OF MOBILE SCHOOL OF NURSING DOSAGE CALCULATION TESTING POLICY

UNIVERSITY OF MOBILE SCHOOL OF NURSING DOSAGE CALCULATION TESTING POLICY PURPOSE: The Dosage Calculation Testing Policy exists to facilitate dosage calculation competence necessary for safe nursing practice.

### Read the following information carefully before attempting the examples and exercises. TABLETS Formula method. = No. of tablets to be given

drug calculations Read the following information carefully before attempting the examples and exercises. TABLETS Required dose No. of tablets to be given Required dose : Required tablet : Stock tablet

### Critical Care Calculations Study Guide

Example #1 Your 65 kg patient has dopamine ordered at 6 mcg/kg/min. The IV has 400 mg of dopamine in 250 ml. What IV rate is correct? 1. Always determine the dose of medication per ml (Drug Concentration)

### MOST COMMON METRIC UNITS USED IN THE MEDICAL FIELD *BASE. deci. King Henry Died (from a) Disease Called Mumps. (k) (h) (da) gram (g) (d) (c) (m)

MOST COMMON METRIC UNITS USED IN THE MEDICAL FIELD Micro (mc) microgram 0 6 One millionth 0.00000 Milli (m) milligram milliliter* millimeter 0 3 One thousandth 0.00 Centi (c) centimeter 0 2 One hundredth

### MATH FOR NURSING MEASUREMENTS. Written by: Joe Witkowski and Eileen Phillips

MATH FOR NURSING MEASUREMENTS Written by: Joe Witkowski and Eileen Phillips Section 1: Introduction Quantities have many units, which can be used to measure them. The following table gives common units

### Nursing Division. PN Dosage Proficiency Exam Study Guide. Effective Fall 2012

Nursing Division PN Dosage Proficiency Exam Study Guide Effective Fall 2012 Page 2 PN Dosage Proficiency Exam (DPE) Study Guide Description This study guide is for Practical Nursing (PN) and Associate

### How Far Away is That? Ratios, Proportions, Maps and Medicine

38 How Far Away is That? Ratios, Proportions, Maps and Medicine Maps A ratio is simply a fraction; it gives us a way of comparing two quantities. A proportion is an equation that has exactly one ratio

### LINCOLN MEMORIAL UNIVERSITY

1 LINCOLN MEMORIAL UNIVERSITY Caylor School of Nursing Dosage Calculations Packet Summer/Fall 2015 Dr. Tammy Dean, DNP, RN, CNE Assistant Dean CSON Associate Professor 2 Unit I Basic Mathematics Review

### Fundamentals of Mathematics for Nursing

Fundamentals of Mathematics for Nursing Cynthia M. McAlister ARNP, MSN, CS Associate Professor Eastern Kentucky University Sandra G. Shapiro ARNP, MSN, CS, MS Associate Professor Eastern Kentucky University

### Safer Prescribing Workbook SECTION 5 CALCULATIONS AND INTRAVENOUS PRESCRIPTIONS

Safer Prescribing Workbook SECTION 5 CALCULATIONS AND INTRAVENOUS PRESCRIPTIONS The objectives of this section are: To understand the rationale behind the rates, dilutions and compatibilities of intravenous

### From the Text. RSPT 2217 Calculating Drug Doses. Key Terms and Definitions. Metric system. Drug amounts for common percentage strengths

RSPT 2217 Gardenhire Chapter 4 From the Text Key Terms and Definitions Page 65 Metric system Table 4-1; page 66 Drug amounts for common percentage strengths Table 4-2; page 73 Self-Assessment Questions

### 168 INTRAVENOUS THERAPY ANSWERS. D/A 125 ml or 31 gtt/min. 1 hr 60 min. x x 1,875 gtt

168 INTRAVENOUS THERAPY 1. Correct answer: C ANSWERS 1 ml : 15 gtt :: 125 ml : x gtt 60 min : 1,875 gtt :: 1 min : x gtt 2. Correct answer: B KEY: = dimensional analysis = ratio and proportion 125 ml 15

### Title: Basic Medical Conversion Formulas

Stackable Cert. Documentation Technology Study / Life skills EL-Civics Career Pathways Police Paramedic Fire Rescue Medical Asst. EKG / Cardio Phlebotomy Practical Nursing Healthcare Admin Pharmacy Tech

### Basic Medication Administration Exam RN (BMAE-RN) Study Guide

Basic Medication Administration Exam RN (BMAE-RN) Study Guide Review correct procedure and precautions for the following routes of administration: Ear drops Enteral feeding tube Eye drops IM, subcut injections

### Pharmaceutical Calculations for Technicians Everyday Applications

Page 1 PHARMACEUTICAL CALCULATIONS FOR TECHNICIANS Every Day Applications Kevin McCarthy, RPh This program has been brought to you by PharmCon PharmCon is accredited by the Accreditation Council for Pharmacy

### Drug Dose Calculations. Calculate This! Organize- 2/8/2012. Finding the ordered dose-the KEY to Calculations! What are you looking for?

Drug Dose Calculations What are you looking for? 1. The desired dose 2. 3. Volume on hand 4. Lbs. to kg 5. Units to administer (What are you looking for?) Calculate This! Doctor orders 2.5 mg of morphine

### 18) 6 3 4 21) 1 1 2 22) 7 1 2 23) 19 1 2 25) 1 1 4. 27) 6 3 qt to cups 30) 5 1 2. 32) 3 5 gal to pints. 33) 24 1 qt to cups

Math 081 Chapter 07 Practice Name SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question. 18) 6 3 4 gal to quarts Convert as indicated. 1) 72 in. to feet 19)

### D( desired ) Q( quantity) X ( amount ) H( have)

Name: 3 (Pickar) Drug Dosage Calculations Chapter 10: Oral Dosage of Drugs Example 1 The physician orders Lasix 40 mg p.o. daily. You have Lasix in 20 mg, 40 mg, and 80 mg tablets. If you use the 20 mg

### The Metric System. The Metric System. RSPT 1317 Calculating Drug Doses. RSPT 2317 Calculating Drug Doses

RSPT 2317 The Metric System The Metric System primary units of measure are length = meter volume = liter mass = gram to change the primary units add Latin prefixes for smaller sizes add Greek prefixes

### Appendix 4: Guidelines for Prescribing and Administering Drugs:

Appendix 4: Guidelines for Prescribing and Administering Drugs: A midwife may prescribe and administer the following substances in accordance with the guidelines approved by the Board. This list indicates

### INFORMATION FOR THE NURSING BASIC MATH EXAM

INFORMATION FOR THE NURSING BASIC MATH EXAM Successful completion of this exam is required of all nursing majors in their first year at Keene State College and transfer students. The exam will be given

### Critical Thinking: Nursing Calculations Part 2

Critical Thinking: Nursing Calculations Part 2 This course has been awarded Two (2.0) contact hours. This course expires on March 31, 2016 Copyright 2004 by RN.com. All Rights Reserved. Reproduction and

Chapter 15 Reconstitution and Dosages Measured in Units 1 Objectives Calculating drug dosage problems that first require reconstitution of a powdered drug into a liquid form Using a proportion to solve

### REVIEW SHEETS INTRODUCTORY PHYSICAL SCIENCE MATH 52

REVIEW SHEETS INTRODUCTORY PHYSICAL SCIENCE MATH 52 A Summary of Concepts Needed to be Successful in Mathematics The following sheets list the key concepts which are taught in the specified math course.

### Children's Tylenol Suspension. (0.8mL) (0.8mL) 1/2 tsp 1/2 tsp

Tylenol If possible use weight to dose; otherwise use age. Use only the dosing device provided. Weight Pediatric Drug Dosages Metric Conversion Table It is extremely important to know how to convert teaspoons

### Objectives. Math Tools Review. Further Reading

Clinical Mathematics Michael P. Dosch CRNA PhD Associate Professor and Chair Nurse Anesthesia, University of Detroit Mercy (www.udmercy.edu/crna/) This page is http://www.udmercy.edu/crna/agm/mathweb09.pdf

### 1 GRAM = HOW MANY MILLIGRAMS?

1 GRAM = HOW MANY MILLIGRAMS? (1) Take the 1-gram expression and place the decimal point in the proper place. 1 gram is the same as 1.0 gram (decimal point in place) (2) Move that decimal point three places

### Dosage Calculation Tutorial

Dosage Calculation Tutorial Kent State University Regional Campuses Karol Burkhart Lindow, RN,C, MSN, CNS Associate Professor, Nursing Reviewers: Denise Ayers, RN, MSN Joan Lappin, RN, MSN Summer 2004

### Pharmacy Technician Web Based Calculations Review

Pharmacy Technician Web Based Calculations Review MODULE 3 3 2009 PRESENTED BY: Jenifer Maki, JENIFER PharmD MAKI, PHARMD BRETT SALEM, PHARMD WITH CONTRIBUTIONS DEREK LOMAS, FROM: PHARMD Brett Salem, PharmD

### Drug Calculations. How to Solve Drug Calculations

S tudent earning entre C Drug Calculations How to Solve Drug Calculations Identify what type of drug calculation and as a first step, use common sense to estimate a rough answer. In many cases, drawing

### PART II MODERN METRIC SYSTEM AND MEDICATION CALCULATIONS

PART II MODERN METRIC SYSTEM AND MEDICATION CALCULATIONS C HAPTER 3 MEASUREMENT UNITS AND CONVERSIONS FOR MEDICATIONS C HAPTER 4 PATIENT RECORDS, MEDICATION ORDERS AND LABELS C HAPTER 5 SOLID AND LIQUID

### Advice, Guidance & Over 400 Online Questions for Extra Revision & Practice

Advice, Guidance & Over 00 Online Questions for Extra Revision & Practice 00_Starkings_Prelims.indd 2/2/20 ::9 PM Chapter Diagnostic assessment NMC Standards for Pre-registration Nursing Education At the

### NUMERACY The Essentials

NUMERACY The Essentials The following guide will provide an overview of the basic numeracy skills required for first year Nursing students. If you experience difficulty in answering the sample questions,

### Intermediate IV Practice Problems

Intermediate IV Practice Problems Practice Problem 1 The doctor orders Rocephin 1g IVPB q 24 hours. On the shelf in the medication room there is Rocephin 1 g in 250ml of D 5 W to be given over 1 hour.

### Mathematics Practice for Nursing and Midwifery Ratio Percentage. 3:2 means that for every 3 items of the first type we have 2 items of the second.

Study Advice Service Student Support Services Author: Lynn Ireland, revised by Dave Longstaff Mathematics Practice for Nursing and Midwifery Ratio Percentage Ratio Ratio describes the relationship between

### The following book is required for purchase prior to the beginning of the semester:

Dear Student: As a faculty member of the Johns Hopkins University School of Nursing, we are pleased to welcome you to the School. In preparation for a key nursing course, Principles and Applications in

### Nursing Drug Calculations Cheat Sheet

Cheat Sheet Free PDF ebook Download: Cheat Sheet Download or Read Online ebook nursing drug calculations cheat sheet in PDF Format From The Best User Guide Database Refresher Sheet Dosage (concentrations):.

### A Brief Overview of Pharmacy Calculations for Pharmacy Technicians

A Brief Overview of Pharmacy Calculations for Pharmacy Technicians Roman Numerals Ratio & Proportion Decimals Rounding Numbers Systems of Measurement IV Calculations Rhomell Calara, PharmD, CPh Kevin McCarthy,

### Critical Thinking: Nursing Calculations Part 2

Critical Thinking: Nursing Calculations Part 2 Presented by: RN.com 12400 High Bluff Dr San Diego, CA 92130 This course has been approved for two (2) contact hours. This course expires on April 20, 2006.

### Good practice for drug calculations

Good practice for drug calculations A step-by-step guide for nurses, doctors and all other healthcare professionals Pharmacyservices 7048 Drug Cal Guide A6 Update_AW.indd 1 22/07/2014 09:55 2 Contents

### Dosage Calculation. Key Terms. Learning Outcomes

6 Dosage Calculation Key Terms Amount to dispense Desired dose Dosage ordered Dosage strength Dosage unit Dose on hand Estimated Days Supply Learning Outcomes When you have successfully completed Chapter

### Dimensional Analysis is a simple method for changing from one unit of measure to another. How many yards are in 49 ft?

HFCC Math Lab NAT 05 Dimensional Analysis Dimensional Analysis is a simple method for changing from one unit of measure to another. Can you answer these questions? How many feet are in 3.5 yards? Revised

### Systems of Measurement

Systems of Measurement Course Principles of Health Science Unit X Vital Signs Essential Question What s math got to do with it? TEKS 130.202 (c)1a, 1B, 1D Prior Student Learning Basic understanding of

### MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

Chem 2A_Ch2_PT MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) When the prefix milli is used in the metric or SI system, a fundamental unit of

### Nursing Mathematics. Drip rate (gtt/min) = Volume to be infused (ml) x Drop factor of tubing (gtt/ml) Time (min)

Nursing Mathematics PO AND IV CALCULATIONS DOSAGE Calculations: Desired Dose (mg) x Volume (ml) = Volume Desired Dose (ml) (mg) Flow Rate (Drip Rate): Infusion Time: Drip rate (gtt/min) = Volume to be

### DOSAGE CALCULATIONS: ADDITIONAL PRACTICE QUESTIONS RECONSTITUTION OF POWDERED DRUGS

RED RIVER COLLEGE NURSING SKILLS LABORATORY DOSAGE CALCULATIONS: ADDITIONAL PRACTICE QUESTIONS RECONSTITUTION OF POWDERED DRUGS Drugs that are unstable in liquid form are manufactured in powder form. These

### Chapter 2 Measurement and Problem Solving

Introductory Chemistry, 3 rd Edition Nivaldo Tro Measurement and Problem Solving Graph of global Temperature rise in 20 th Century. Cover page Opposite page 11. Roy Kennedy Massachusetts Bay Community