10 Jan 2018. Nursing; Using Formulae to Work Out Drug Dosages; Using Formulae to Work Out Drug Dosages. Maths, statistics, physics & chemistry. Author: Carmen Adams Edition: 1 Psc/Pap Publisher: Mosby Elsevier Binding: Misc. Undertaking drug calculations for oral medicines and suppositories. One way to tackle these types of questions is to set up a simple equation where X is the variable you are trying to find. Maintaining accuracy To minimise the number of errors caused by miscalculating dose, volume or rate of administration nurses must be familiar with and apply a number of mathematical formulae (Trim, 2004). Dosage calculations for nurses – drug math made easy! This is a good book to start with. What an excellent resource you have created for nursing students! Easy to use, plenty of quizzes and handy tips on working out drug calculations. • Remember that a formula often used for working out how many tablets to take or for a drug taken 74 thoughts on “ Dosage calculations the easy way! Student nurses need to get this! ADN 841: Nursing Seminar II Learning Unit 3: Handout Page 1 of 6 Dosage Calculations This unit looks at drug calculations. Nurses are required to demonstrate knowledge and competence in undertaking drug calculations... CPD articles. For the dosage, this refers to the prescribed amount of the drug you plan to take in mg per kg of body weight. We will now look in more detail at the two main ways of calculating dosage: mental arithmetic and using a formula. When using the formula approach you may wish to work out the answer using pen and paper, or you may wish to use a calculator. Outlines Introduction Metric Conversions MG/KG Dose Conversion Flow Infusion Rates 3. In this case, the sum is 3000/500 = 6 tablets, which can be safely given. I certainly wish I could have had this to discover back when I was in nursing school (but we barely knew what computers were, haha). Nurses are often intimidated by the math that occurs in everyday practice. These calculations are mainly used for children, who need just a fraction of the adult dose. When calculating drug doses for solid dosage forms like tablets, multiply the patient's weight in kg by the relative dose (in mg/kg) to get your drug dose. Essential for EVERY Nurse or Midwife! Calculate medication dosages using the formula DH×Q=x 3. The most common system we will use is the metric system. Many a times we have to calculate the drug doses based on the patient’s weight. This page contains NCLEX practice exams in various topics of pharmacology for nurses. CHAPTER 15 Dosage Calculation Using the Formula Method Objectives After reviewing this chapter, you should be able to: 1. www.snap.nhs.uk . Make sure to input your accurate weight! This is more so in a pediatric patient, or calculating doses of infusions used in critical care like Dopamine, Dobutamin, Nitroglycerin, Lidocaine, etc. The volume will still be 500. Nursing competence in drug calculations has been a cause for concern (Duffin, 2000; Coombes, 2000). The following videos are an introduction to basic drug calculations for nursing. It is easy to read and has lots of exercises to work from. Calculating drip rates for drugs ordered as mcg/kg/minute Some I.V. Also it is pack with practice NCLEX question for drug calculation . Answer: 5 mg x … How to Solve Drug Calculations • Identify what type of drug calculation and as a first step, use common sense to estimate a rough answer. Remember, for either of these approaches you must first be sure that the stock dosage (the drug in liquid form) is in the same units as the required dosage (the prescription). Drug Calculations for Nurses A Step by Step Approach, 3rd Edition Robert Lapham Heather Agar Im preparing for my first drug calculation test and am hoping for some input on what others think is the easiest drug calc method/formula. in mcg/kg/minute. Body Weight Calculations (single dose) To work out the dosage based on the weight of the patient use the following formula Dosage required = prescription x body weight Example: Mrs B has been prescribed Ibuprofen 5mg/kg/dose. Stage 1: Using the formula below, calculate the total required dosage based on given the body weight. Patient safety depends on the practitioner's ability to calculate medications correctly and in a timely manner. For example: You are asked to give a patient weighing 50 kg a 1 mg/kg IV injection. By Claire Boyd . Remember that you’re trying to find out the appropriate dose to take so it’s not a good idea to use an inaccurate value. Dosage calculations based on body weight are calculated in two main stages. Drug calculations 1. Dr. Rachel Silva DNP May 9, 2015 at 11:06 am. Stage 2: Apply the x Q formula to calculate the actual amount of medication to be administered. No matter which drug you’re giving, if it is ordered as mcg/kg/minute, you can use the same simplified equa- Calculate how much Ibuprofen you will give her. “What I hear, I forget, What I see, I remember, What I do, I understand.” —KUNG FU TZU… This quiz provides the opportunity to refresh your knowledge on performing Drug Calculations! Features: Calculating doses Units of measure Equivalences Conversions mL/hour DPM IV Rates Thanks Debbie (ED Nurse) for the idea of having it hang up-side-down so it’s the right way up when you look at it! PO Dose: Liquids Doses liquid medications such as Tylenol®, Kayexalate® and lactulose. Calculate the number of tablets or capsules to administer 4. Introduction When calculating how much of a drug is required, working with the formula helps the accuracy of the calculation. This site has nursing calculation quizzes with answers that you can access immediately – no need to download. Citation: Wright K, Shepherd E (2017) How to calculate drug doses and infusion rates accurately. Log in to leave feedback . Some drug calculations may involve working out the volume of solution needed to give the required dose of a drug. 4. 8 Injectable Medication Calculations OBJECTIVES • Calculate and measure intradermal, subcutaneous, and intramuscular doses. Specimen Drug Cupboard.pdf [pdf] 562KB; Specimen NUH medicines management test paper.pdf [pdf] 137KB; Calculators are not permitted, but the IV infusion calculation formula will be available. Dosage calculations made incredibly easy for nursing students using dimensional analysis. drugs (such as dopamine, dobutamine, nitro-prusside, phenylephrine, cisatracurium, and in some cas-es epinephrine) are delivered I.V. Medication Dose Calculators PO Dose: Solids Doses solid forms of medication (e.g., tablets, caplets, capsules, lozenges). Churchill Livingstone. Information. Nursing calculations . • Calculate and combine doses for two medications to be mixed in one syringe to the nearest measurable dose. Reducing medication errors in nursing practice. It’s important to remember any time we do calculations we must have our measures in the same system and in the same sized units. In this tutorial . • For example, if Lidocaine comes 1 g/ 25 mL, and you will mix 1 g in your 500 mL IV bag, first withdraw 25 mL of fluid from your IV bag, then replace it with the 25 mL containing to 1 g of Lidocaine. Each calculator, along with examples and formulas, provides a unique way to review nursing math. Home. Calculate- using the formula. I have always, always, always struggled in math.....so the easier the better for me. Drug calculations for intravenous (IV) medicines and infusions are more complex than those... CPD articles. In many cases, drawing a picture that visually represents the problem is often a helpful strategy. Formula example: Let's now apply the formula to the 500 microgram tablets. This site is free and has a mixture of numeracy and nursing calculation quizzes. Calculate the volume to administer for medications in… Formulae can make your life much easier when working out doses of tablets and pills, IV drip rates and more, as long as you know how they work. This article will provide a simple and concise method for accurate computation using basic calculations (see Quick reference: Universal formulas). After each video, test your knowledge with the interactive activities. Nursing Calculations. Review the formulae below: Volume required = 'Strength Required / Stock Strength x Volume of Stock Solution /1' Tablets = Calculating dose from mg/ kg body weight. Drug Calculations Rami AL-Khateeb 2. the same originally calculated. 11 Oct 2017. 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