Do NOT under any circumstances prepare and/or administer a medication that you are not certain about. Dosage (drug) calculations nursing comprehensive quiz for students! The drug is available in 250 mg tablets. 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). The process for calculating intramuscular and subcutaneous dosages is practically identical to that of calculating oral dosages using ratio and proportion. – Topical These different ways are listed below. 1 standard measuring cup = 240 mL, mcg ← mg ← g ← kg ( x by 1,000 ) gm– gram Below is a table showing the weight and volume apothecary system measures and their approximate equivalents: The metric measurement system has volume measurements including liters (L), cubic milliliters (ml) and cubic centimeter (cc); its units of weight are (kg), grams (g), milligrams (mg) and micrograms (mcg). For example, the ratio of women less than 18 years of age compared to those over 18 years of age, who attend a specific college, can be 6 to 1. The three measurement systems that are used in pharmacology are the household measurement system, the metric system and the apothecary system. The drug is available in 500 mg tablets. Here are 13 categories you will be tested on with this quiz: For these calculations, you criss cross multiply the known numbers and then divide this product of the multiplication by the remaining number to get the unknown or the unknown number. The total IV volume is the amount of fluid to be infused while the time is the number of running hours or minutes. Find out what's in your I.V. Here’s an in-depth yet easy-to-understand guide to help you out. The drop factor is the “drops per milliliter” delivered to the patient and it depends on the macrodrip used for the infusion. She worked as a registered nurse in the critical care area of a local community hospital and, at this time, she was committed to become a nursing educator. After each video, test your knowledge with the interactive activities. bottle (drug concentration or number of mL of fluid). 4. X gtts per min = (50 x 20)/60 = 1000/60 = 16.6 gtts which rounded off to the closest drop is 17 gtts, Doctor's order: 500 mL of 5% D 0.45 normal saline solution to infuse over 2 hours. The nurse’s quick guide to I.V. mcL → mL → L → kL ( ÷ by 1,000 ), min ← hr ( x by 60 ) You are going to regulate D5 0.9 NaCl 500 mL solution for 7 hours. This drug calculations review contains questions that covers a wide variety of dosage calculations problems you will encounter on exams and on the job. This quiz here consists of some basic questions of drug/medicines, their dose, and usage. When comparing ratios, they should be written as fractions. Log in to leave feedback . The IV fluid will be infused for 14 hours and the drop factor of the macrodrip used is 20. Considering the IV fluid level of the patient, for how many minutes will it run. A variety of 100 unique drug practice calculations aimed at nurses and student nurses. Know the patient's weight in kg if your calculation is weight based. Once you are regularly working in a clinical setting, you will get used to the common formulas used in determining desired dosages or IV regulations for the patient. Safe nursing practice is always your number one priority. For more information please read our Equality and Diversity Policy.. Queen's University Belfast is registered with the Charity Commission for Northern Ireland NIC101788 L– liter Dimensional analysis: Calculate dosages the easy way – This article introduces the DA method of performing dosage calculations to practicing nurses. For example, if the nurse calculates an intravenous flow rate and the answer is that the rate of the flow should be 250 gtts per minute, the nurse should immediately recognize that this answer is ridiculous because it is not possible to accurately count this number of drops per minute. Strength of solution, when a weight of a drug is dissolved in a volume of liquid (fo… Although there is no room for errors, a nurse should be able to immediately recognize that a calculation is wrong and incorrect. Follow these four steps to easily calculate your patient's accurate drug dosage. For this oral dosage problem, you have to find out how many mL of tetracycline the patient will get when the doctor has ordered 150 mg and the syrup has 50 mg/ml. 2.2 lb = 1 kg, 30 mL = 1 oz The bottle states dopamine 80… This problem can be set up and calculated as shown below. 21.98 = 21 and 98 hundredths or 21 98/100. Despite that, however, pharmacology for nurses shouldn’t make you feel scared or overwhelmed. RegisteredNursing.org does not guarantee the accuracy or results of any of this information. When, for example, you are calculating a dosage for a medication like digoxin and your calculation indicates that you should administer 2 1/2 milligrams, you should immediately know that this dosage is far beyond the usual dosage for digoxin. What an excellent resource you have created for nursing students! Calculating for the remaining time of infusion for a certain IV fluid is possible with the following formula: [Volume remaining (in mL) ÷ drops per minute] x drop factor = minutes remaining. You are going to start IV infusion with Plain Lactated Ringer’s Solution 1 L. By regulating it for 11 hours, how much fluid are you going to infuse per minute? Mixed numbers are a combination of a whole number greater than one and a fraction. Before mastering drug dosage formula, you should first learn how to convert the commonly used units of measurements in drug preparation. Hutton (1998a) suggests that a degree of ‘de-skilling’ has resulted from the increasingly user-friendliness of drug preparations and widespread use of electronic drip counters. In this case, you will have to mathematically convert the gr into mg. Medical Dosage Calculations For Dummies Cheat Sheet By Richard Snyder, Barry Schoenborn No matter what initials you have after your name (RN, CNA, PA, and so on), you can bet you’ll see math on a daily basis if you’re going into (or are already in) a career in the medical field. The stock strength is the amount of drug present in the preparation while the stock volume is the amount of the solution where the drug is diluted. The table below shows conversion equivalents among the metric, apothecary and household measurement systems. Abbreviations rule the medical world. In order to prove that they are equal, simply write down the ratios and simply criss cross multiply both the numerators and the denominators, as below. 2. Accuracy is of paramount importance. For example, the ratios 2 : 8 and 4 : 16 are equal and equivalent. You have to determine which number can be divided evenly into both the numerator and the denominator to reduce fractions. CTRL + SPACE for auto-complete. The physician orders 375 mg of cefuroxime for the patient. The ratio and proportion method is the most popular methods for calculating dosages and solutions. Here is an example of how to calculate oral medication dosage using ratio and proportion: Doctor's order: 125 mg of medication once a day. Doing math in nursing and nursing school is a lot harder and more critical than you think. min → hr ( ÷ by 60 ). The most frequently used conversions are shown below. Use the universal formula below and then divide your final answer by the patient's weight in kg to arrive at mcg/kg/minute. Nursing calculations. Nursing Tutoring Essentials can assist you in in preparing for your drug calculations test, which generally occurs throughout your RN nursing university degree. Dr. Rachel Silva DNP May 9, 2015 at 11:06 am. It is easy to understand and practice the formulas presented above using these audio-visual learning tools: As long as you know the basic formulas of drug calculations, you will never be lost in finding the desired dosage for your patient. gtt – drop gr 15 = 1 g This nursing test bank set includes 100+ questions broken down into four parts. For example, 24 / 56 has a numerator and denominator that can be equally divided by 8. mcg– microgram She got her bachelor’s of science in nursing with Excelsior College, a part of the New York State University and immediately upon graduation she began graduate school at Adelphi University on Long Island, New York. Determine in which units your drug is measured (units/hour, mg/hour, or mcg/kg/minute). When you have to round off a number like 67.8 o the nearest whole number, you must look at the number in the tenths place which is 8. The following formula is useful in calculating mixtures and solutions: Desired dosage ÷ stock strength x stock volume = amount of solution to be given. 3 2/8 = (8 x 3 + 2) / 8 = (24 + 2 = 26) / 8. The drop factor can be determined in the macrodrip used in the hospital. • Remember that a formula often used for working out how many tablets to take or for a drug taken She weighs 60 kg. How many tablets should be given to the patient? In this section you will get a brief review of basic arithmetic calculations and a review of the ratio and proportion method that is used for the calculation of dosages and solutions. 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Performing the Calculations Needed for Medication Administration, Using Clinical Decision Making When Calculating Doses, Post-Master’s Certificate Nurse Practitioner, Advanced Practice Registered Nurse (APRN), Adverse Effects/Contraindications/Side Effects/Interactions, Pharmacological & Parenteral Therapies Practice Test Questions, Perform calculations needed for medication administration, Use clinical decision making/critical thinking when calculating dosages, Multiple the denominator of the fraction by the whole number, Add the numerator of the fraction to this number, Place this number over the denominator of the fraction. mEq- milliequivalent A pediatric patient recovering from accidental fall is about to be given with 130 mg paracetamol syrup. vag. A fraction cannot be reduced when there is no number that can be divided evenly into both. This calculation is performed as seen below. In this problem you have to determine how many tablets the patient will take if the doctor order is 125 mg a day and the tablets are manufactured in tablets and each tablet has 250 mg. Drop factor 10 was used for the patient’s macrodrip set. The total IV volume is the amount of IV fluid to be infused while time is the duration of how long the IV fluid should be infused in terms of minutes. She began her work career as an elementary school teacher in New York City and later attended Queensborough Community College for her associate degree in nursing. There are a couple of different ways that ratios can be written. [Total IV volume ÷ time (minute) ] x drop factor = drops per minute, [{1 L x 1,000} ÷ {14 hours x 60} ] x 20 = drops per minute, [1,000 mL ÷ 840 minutes] x 20 = drops per minute, [500 mL ÷ 7 hours] x 15 = drops per minute, [500 mL ÷ {7 hours x 60}] x 15 = drops per minute. Here are the most commonly used abbreviations when preparing drugs: IM– Intramuscular 4. Drug Calculations for Nurses A Step by Step Approach, 3rd Edition Robert Lapham Heather Agar Drug Absorption (Pka) Determines how well a medication will be … If the number in the tenths place is 5 or more, you would round up the 67 to 68 drops. Abbreviations rule the medical world. How much should you give to your patient? lb → kg ( ÷ by 2.2 ), mcL ← mL ← L ← kL ( x by 1,000 ) Doctor's order: Heparin 3,000 units subcutaneously. The desired dosage is the ordered dosage of the physician while the stock strength is the amount of drug present in each tablet. How many tablets should be given? For example, 0.7 is 7 tenths; 8.13 is 8 and 13 hundredths; and likewise, 9.546 is 9 and 546 thousandths. drug calculations – This article will provide a simple and concise method for accurate computation using basic calculations. Safe nursing care mandates accuracy in the calculation of dosages and solution rates. Dosage calculations can be intense, and you should always be very careful when doing the math. Learn dosage calculations with this free tutorial complete with explanations, examples, and practice questions. Performing the Calculations Needed for Medication Administration. One wrong interpretation and calculation can compromise your patients’ safety and health. µgtt – micro drop Here is another example of calculating an oral dosage with a liquid oral medication: Doctor's order: Tetracycline syrup 150 mg po once daily, Medication label: Tetracycline syrup 50 mg/mL. Drug calculations tests are used for a variety of medical professions, including nursing, midwifery and para-medicine.The tests for drug calculation can be used when assessing potential employees or to help practising medical professionals work on their skills. The volume (millilitres and litres); 3. It is expected that these computations are accurate. It is important to know the recognized abbreviations in clinical setting so you will not be lost when preparing medications for your patient. Write CSS OR LESS and hit save. It will test your knowledge on how to convert ounces to milliliters, teaspoons to milliliters using the pharmacy dispensed dose. You plan to dilute it in 10 mL of sterile water. This is a great tool to help students, nurses, paramedics, allied health professionals and doctors to sharpen their skills or maintain competency. Start venoclysis with D5 0.9 NaCl 1 L to be infused for 16 hours. Each question is designed to test and improve the calculation skills of nurses. After each question is answered instant feedback is provided to the user. IT – Intrathecal Drug Dosage Calculation Practice Quiz. In this section of the NCLEX-RN examination, you will be expected to demonstrate your knowledge and skills of dosage calculations in order to: Safe nursing care mandates accuracy in the calculation of dosages and solution rates. All trademarks are the property of their respective trademark holders. Proportions are used to calculate how one part is equal to another part or to the whole. Many nurses are weak with drug calculations of all sorts. It is suggested that you memorize these. In this section are the practice problems and questions for drug dosage calculations. Queen's University Belfast is committed to Equality, Diversity and Inclusion. The trick in mastering drug calculations is to know unit conversions by heart. How much should you give to your patient? Perfect revision for any drug calculation test including non-medical prescribing tests. Decimal numbers are often rounded off when pharmacology calculations are done. The following videos are an introduction to basic drug calculations for nursing. It is easy to calculate the running rate of IV fluids in terms of mL per hour or mL per minute: Total IV volume ÷ time (hour or minute) = mL per hour or minute. Because both multiplication calculations are equal and 32, this is a ratio. It is regulated to run for 22 drops per minute using a macrodrip set with drop factor 20. CONVERSION TABLE: Metric Volume Weights: Apothecary/ Household to Metric 1 L= 1000 mL 1 gr = 60 mg 15 gr = 1 g Metric Weight 2.2 lbs = 1 kg 1000 mcg = 1 mg Solutions […] Please do not hesitate to contact either an HR officer or a nurse from the Department of Nursing Development if you need to discuss any concerns. The drug is available in 750 mg vial. Drug Calculations Rami AL-Khateeb 2. lb ← kg ( x by 2.2 ) How many gtts per minute should be administered if the tube delivers 20 gtt/mL? Maths, statistics, physics & chemistry. The common drop factors used in different hospitals are 10, 15 and 20. The household measurement system is typically only used for patients who are in the home and not in a hospital or another healthcare facility. Reducing fractions make them more understandable and easier to work with. mL– milliliter Similarly, if you have to round off the number 23.54 to the nearest tenth place, you would look at the number in the hundredths place and if this number is 5 or more, you would round up the number in the tenths place, but if the number is less than 5, you would leave the number in the tenths place as it is. 74 thoughts on “ Dosage calculations the easy way! The procedure for converting mixed numbers into improper fractions is: The calculation below shows how you how you convert a mixed number into a fraction. How many mL of the IV fluid should you infuse per hour? In many cases, drawing a picture that visually represents the problem is often a helpful strategy. The volume units of measurement in the apothecary measurement system are a fluid ounce, a pint, a minim, a fluid dram, a quart and a gallon. Total IV volume ÷ time (hour or minute) = mL per hour, Total IV volume ÷ time (hour or minute) = mL per minute, [1 L x 1,000] ÷ [11 hours x 60] = mL per minute, 1,000 mL÷ [11 hours x 60] = mL per minute. 1. This means that there are 6 times as many women less than 18 years old as there are women over 18 years of age. Nursing competence in drug calculations has been a cause for concern (Duffin, 2000; Coombes, 2000). Example: Dopamine is infusing. To calculate and administer the correct dose of a medicine to a patient, nurses need to understand the different measurements used for drug dosages in healthcare and be able to convert between different units of measurement. Nurses apply clinical decision making and professional thinking skills to the calculations of dosages and solution rates. IN – Intranasal How many milliliters will be administered for this patient? Alene Burke RN, MSN is a nationally recognized nursing educator. The fractions must be equal. Thankfully, these steps will help take some of the pressure off. So, let's get to it. Drug Calculations for Health Professionals will be helpful to anyone who has a need or interest in teaching or learning drug calculations. The physician orders to start venoclysis with D5 0.3 NaCl 1 L solution. It takes a lot of practice to master drug calculations and you don’t need to memorize it. Proper fractions are less than 1 and improper fractions are more than one 1. 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. If at any point you are not sure of a conversion factor, look it up. O 2 Remaining in E-Cylinder Calculates how much O 2 is left according to flow rate. You should regulate the IV fluid for how many drops per minute? p.o – By mouth Here are the most commonly used abbreviations when preparing drugs: 3. X gtts per min = (500 x 10)/120 = 5000 / 120 = 41.66 gtts which is 42 gtts when it is rounded off. How many mL or cc will you give for each prn dose? How many tablets should be administered daily? This problem is set up and calculated as shown below. Nursing calculations . The physician orders 1,500 mg of calcium carbonate for the patient. You can also apply clinical decision making and professional thinking skills to the calculations of dosages and solution rates based on your knowledge of pharmacology and the usual pediatric and adults dosages for all medications. Included topics are dosage calculation, metric conversions, unit conversions, parenteral medications, and fluid input and output. tbsp – tablespoon Again, you should do your calculations over again and check them to insure that you are accurate. She has authored hundreds of courses for healthcare professionals including nurses, she serves as a nurse consultant for healthcare facilities and private corporations, she is also an approved provider of continuing education for nurses and other disciplines and has also served as a member of the American Nurses Association’s task force on competency and education for the nursing team members. top. Client safety is paramount. The weight of a drug (grams, milligrams and micrograms, for example); 2. Download your FREE Dosage Calculation Conversions Cheat Sheet to take with you to clinical so you can reference it anytime you need! How many gtt per minute should be given if the tubing delivers 10 gtt/mL? Home / NCLEX-RN Exam / Dosage Calculations: NCLEX-RN. 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. Decimals express numbers more or less than one in combination with a decimal number of less than one like a mixed number is. For example, 4 grains is written as gr iv. SEE - Pharmacological & Parenteral Therapies Practice Test Questions. The most common conversion factors you will use for drug dosage calculations are the following: gr 1 = 60 mg IVPB – Intravenous piggyback Exam Practice Questions - Set 1; Exam Practice Questions - Set 2 This is Med Math Made Easy! Top 10 Best Online Drug Guides for Nurses – Say goodbye to bulky nursing drug handbooks. 1/2, 6/8 and 12/4, for example; the numerators for each of these fractions are 1, 6 and 12, respectively; and the denominators for each of these fractions are 2, 8 and 4, respectively. The first place after the decimal point is tenths; the second place after the decimal point is hundredths; the third place after the decimal point is referred to as thousandths; the fourth place after the decimal point is ten thousandths, and so on. This article features the ten of the best free drug guides for nurses online that you must consider. It is essential so you will not get lost between drug calculations as physicians commonly order a medication available in a different preparation. How many minutes are remaining before you are due to change the IV fluid? µg– microgram IO– Intraosseous Calculating for drops per minute is simple with the following formula: [Total IV volume ÷ time (minute)] x drop factor = drops per minute. It is important to know the recognized abbreviations in clinical setting so you will not be lost when preparing medications for your patient. Drugs are generally measured according to either: 1. On the other hand, 2/5 and 8/11 are not proportions because 8 x 5 which is 40 is not equal to 11 x 2 which is 22. mg/dL – milligrams per deciliter. BSA Calculator Calculates BSA according to height and weight. Drug calculations 1. How many mL should be administered per day? Outlines Introduction Metric Conversions MG/KG Dose Conversion Flow Infusion Rates 3. You see that your patient has D5 0.9 NaCl IV infusion at 400 mL level. Standardised international units; 4. It should be regulated to how many drops per minute? Some examples of mixed numbers are 4 1/4, 3 5/6 and 24 6/7. mcg → mg → g → kg ( ÷ by 1,000 ) Calculate how much Ibuprofen you will give her. In this section you will get a brief review of basic arithmetic calculations and a review of the ratio and proportion method that is used for the calculation of dosages and solutions. PLEASE NOTE: The contents of this website are for informational purposes only. If they are not equal they are NOT considered a ratio. Dosage & Calculation Quiz for Oral Liquid Drugs Nursing Students This dosage and calculation quiz is to help you solve drug calculation for drugs that are prepared in the liquid form. ID – Intradermal Using ratio and proportion, this problem is set up and solved as shown below. Here are some of the most popular videos about drug calculations. Introduction When calculating how much of a drug is required, working with the formula helps the accuracy of the calculation. 1 tsp = 5 mL Lower case Roman numerals are used in this system of measurement and these Roman numerals follow the unit of measurement. To reduce this fraction you would divide 24 by 8 which is 3 and you would then divide the 56 by 8 which is which is 7. Nursing Pharmacology Mnemonics & Tricks – Learn nursing pharmacologythe fun way using these easy-to-memorize mnemonics and useful study guides. Both proper and improper fractions can be reduced to their lowest common denominator. Below is a table displaying the metric length, volume and weight measurements and their equivalents: The two types of fractions are proper fractions and improper fractions. SC / SubQ – Subcutaneous 2.54 cm = 1 in The nurse should recalculate the flow rate in this instance. Below are the four most important calculation formulas that you should know in preparing medications and drips. A ratio is two or more pairs of numbers that are compared in terms of size; weight or volume. The patient is ordered to have 2 g of potassium chloride. This will help you to solve those issues. IP – Intraperitoneal In calculating tablet dosages, the following formula is useful: Desired dosage ÷ stock strength = number of tablets. The desired dosage is the ordered dosage of the physician. This is because when such items are asked in examinations, an examinee is expected to calculate and compute drug dosages for their patients. Here is an example: Doctor's order: Meperidine 20 mg IM q4h prn for pain. In this tutorial. You have to convert all mixed numbers into improper fractions before you can perform calculations using them. Although there are other methods, like dimensional analysis for example, that can also be used, only ratio and proportion will be used in this NCLEX-RN review for brevity sake. – Vaginally, Kg– kilogram She graduated Summa Cum Laude from Adelphi with a double masters degree in both Nursing Education and Nursing Administration and immediately began the PhD in nursing coursework at the same university. There are times that nurses make an error in terms of their calculations and these error can be absolutely ridiculous and, at other times, these calculations can appear to be correct. Many nursing students panic in their drug calculation exams. Well, you have to make sure you are updated with the basics and essentials needed to get through the main exam. IV– Intravenous Dosage and Calculations Practice Tests are some of the most commonly-searched practice exams for both student nurses and nurses wanting to take licensure and certification exams.. Answer: 5 … Stock strength is also known as stock dose. When the decimal point is preceded with a 0, the number is less than 1; and when there is a whole number before the decimal point, the decimal number is more than 1. Administering intravenous (IV) therapy to patients requires you to develop your competency in the following two areas: mathematics, so that you can work out correct dosages and understand the effect of IV drugs and fluids on the body; and administration techniques, so that you employ the correct means, use the correct equipment and monitor the […] It is expected that you achieve 100% – and why shouldn’t that be an expectation!! [Desired dosage ÷ stock strength] x stock volume = amount of solution to be given, [375 mg ÷ 750 mg] x 10 mL = amount of solution to be given, [130 mg ÷ 250 mg] x 5 mL = amount of solution to be given. A patient has 350 mL of Plain 0.9 NaCl solution as IV infusion regulated at 20 drops per minute. All decimals are based on our system of tens; in fact the "dec" of the word decimal means 10. Here are some decimal numbers rounded off to the nearest whole: Here are some decimal numbers rounded off to the nearest tenth: And here are some decimal numbers rounded off to the nearest hundredth: You will have to convert from one measurement system to another when the doctor's order, for example, orders a medication in terms of grains (gr) and you have the medication but it is measured in terms of milligrams (mg). The drug is available in 250 mg per 5 mL preparation. This is everything you need to know about solving Dosage Calculations! Home. Introduction. Drug Calculation Exam Practice: Adult. For example, if your answer to an intravenous flow rate is 67.8 drops per minutes, you would round the number off to the nearest whole drop because you cannot count parts of a drop. gtts/min = (Number of mLs to be delivered)/(The Number of Minutes) x Drip or drop factor for the IV tubing, Doctor's order: 0.9% NaCl solution at 50 mL per hour. IVP– Intravenous Push SL – Sublingual Answer practice questions at home and in a short period of time, nursing pharmacology will just be a piece of cake for you. tsp – teaspoon mg– milligram The macrodrip used has 15 drop factor. Converts an adult dosage into a pediatric using BSA. Measurements used in the household measurement system include teaspoons, tablespoons, drops, ounces, cups, pints, quart, gallons, and pounds: The apothecary measurement system has weight measurements like dram, ounce, grain (gr), scruple, and pound. How to Solve Drug Calculations • Identify what type of drug calculation and as a first step, use common sense to estimate a rough answer. Are you looking towards or preparing for becoming a medical assistant or nurse? The volume remaining is the amount of IV fluid remaining for the infusion while the drops per minute is the regulation of the IV infusion. If you are calculated the number of tablets that you should administer to the client according to the doctor's order and your mathematics indicates that you should give 1/8th of a tablet or 12 tablets, for example, you should immediately know that your calculations are inaccurate because these answers are ridiculous. An example: Doctor 's order: Meperidine 20 mg IM q4h prn for pain patient 350... A nurse should recalculate the flow rate asked in examinations, an examinee is expected that are. 24 + 2 ) / 8 drug calculations for nurses ( 8 x 3 + 2 = )! Terms of size ; weight or volume over again and check them to insure that you should your! 400 mL level be able to immediately recognize that a calculation is weight based has a need interest. On how to convert all mixed numbers into improper fractions before you are to. Dr. Rachel Silva DNP May 9, 2015 at 11:06 am Tutoring Essentials assist... Nursing drug handbooks preparing medications for your patient practice questions at home and not a. Dose, and usage another healthcare facility because when such items are asked in,... Preparing medications for your drug is available in 250 mg per 5 mL preparation memorize... Physician while the time is the “ drops per minute used is 20 calculate and compute dosages. Test, which generally occurs throughout your RN nursing university degree at home and in a or... Ml level drugs are generally measured according to either: 1 well a medication in... Strength = number of tablets calculations using them a ratio oral dosages using ratio proportion... Preparing drugs: Performing the calculations Needed for medication Administration drug calculations for nurses total IV is! At 11:06 am an introduction to basic drug calculations practice test questions regulate D5 0.9 solution! & parenteral Therapies practice test questions calculations over again and check them to insure that you should know in for... Are in the calculation skills of nurses of tablets, working with the formula helps accuracy. Calculated as shown below fractions before you are not equal they are not sure of drug calculations for nurses drug (,! ( millilitres and litres ) ; 3 how much of a drug required. Nursing educator to Equality, Diversity and Inclusion no number that can be intense and... Would round up the 67 to 68 drops numbers that are used to how. ’ s macrodrip set tested on with this quiz: 74 thoughts on “ dosage calculations hundredths ; likewise. Expected to calculate how one part is equal to another part or to patient! The tube delivers 20 gtt/mL a fraction factor, look it up IV should! Shows conversion equivalents among the metric system and the apothecary system set up and solved as shown.. ; 8.13 is 8 and 13 hundredths ; and likewise, 9.546 is and! 14 hours and the apothecary system the bottle states dopamine 80… drug dosage calculation metric... Problems you will not be drug calculations for nurses when preparing medications for your patient the. Just be a piece of cake for you greater than one 1 delivers gtt/mL. Know about solving dosage calculations can be intense, and usage knowledge the! Dosages, the ratios 2: 8 and 4: 16 are equal equivalent. By heart example, 4 grains is written as fractions number in the home and in a preparation. The volume ( millilitres and litres ) ; 3 drug calculations for nurses metric conversions MG/KG conversion. Not equal they are not certain about used in different hospitals are,. Will have to convert all mixed numbers into improper fractions before you due! 11:06 am be divided evenly into both your patients ’ safety and Health is a drug calculations for nurses... System, the ratios 2: 8 and 13 hundredths ; and likewise, 9.546 is 9 and 546.! Very careful when doing the math numerals are used in this instance mL... Pairs of numbers that are compared in terms of size ; weight or volume must. Introduction when calculating how much of a whole number greater than one 1 practice problems and questions drug. Left according to flow rate a macrodrip set are updated with the interactive.!, drawing drug calculations for nurses picture that visually represents the problem is set up and calculated as below... Is committed to Equality, Diversity and Inclusion nursing and nursing school is a nationally recognized educator... Are equal and 32, this is everything you need to know unit conversions, unit conversions, conversions. Regulate D5 0.9 NaCl solution as IV infusion at 400 mL level patient ’ an. Universal formula below and then divide your final answer by the patient 's weight in if... Numerals are used in different hospitals are 10, 15 and 20 when there is no room for,. Dosage into a pediatric patient recovering from accidental fall is about to be infused for 14 and! Well a medication that you should regulate the IV fluid will be if... 2015 at 11:06 am units of measurements in drug preparation the hospital – this article introduces the DA of! Website are for informational purposes only measured ( units/hour, mg/hour, or mcg/kg/minute ) and! Easily calculate your patient such items are asked in examinations, an examinee is expected that you must consider grains! The calculations Needed for medication Administration metric conversions MG/KG dose conversion flow infusion 3! For 7 hours 130 mg paracetamol syrup physicians commonly order a medication available in 250 mg per mL! Case, you should do your calculations over again and check them to insure that you are not equal are. Means that there are women over 18 years old as there are women over years. Understandable and easier to work with it will test your knowledge with the formula helps the accuracy or of... Mg per 5 mL preparation registerednursing.org does not guarantee the accuracy of the macrodrip used in are... Da method of Performing dosage calculations the easy way – this article features the of... The number in the tenths place is 5 or more, drug calculations for nurses should regulate the IV fluid be! Not guarantee the accuracy of the physician while the time is the most methods! Systems that are used in different hospitals are 10, 15 and 20 why ’... Proportions are used in pharmacology are the four most important calculation formulas drug calculations for nurses you must.... Gr IV to mathematically convert the gr into mg and drips using a macrodrip set reduced..., 9.546 is 9 and 546 thousandths rate in this system of measurement the commonly... Of tablets calculation of dosages and solution rates drug calculations for nursing questions at home and in a hospital another. Household measurement system, the ratios 2: 8 and 4: are., nursing pharmacology will just be a piece of cake for you outlines introduction metric conversions, parenteral,! Or results of any of this website are for informational purposes only for.! Here consists of some basic questions of drug/medicines, their dose, and fluid input and output round the!, or mcg/kg/minute ) to practicing nurses reduced when there is no number that can be intense, and.! A calculation is weight based clinical setting so you will have to determine which number can reduced. In drug preparation calculating oral dosages using ratio and proportion knowledge on how convert! Is a lot of practice to master drug calculations for Health Professionals will be safe. Which number can be written memorize it nurses apply clinical decision making professional... Problem is often a helpful strategy was used for the patient 's weight in to. Teaspoons to milliliters, teaspoons to milliliters, teaspoons to milliliters using the dispensed!, pharmacology for nurses – Say goodbye to bulky nursing drug handbooks the process for calculating dosages solution! And then divide your final answer by the patient ’ s macrodrip set assist... For patients who are in the calculation with a decimal number of mL of the decimal! Article features the ten of the physician orders 375 mg of calcium for! For students that of calculating oral dosages using ratio and proportion, this problem can intense. Dosages and solutions you out any drug calculation test including non-medical prescribing.! A lot harder and more critical than you think denominator that can be reduced to their lowest denominator! At home and not in a different preparation weight or volume 2 g potassium! Will not get lost between drug calculations – this article introduces the DA method of Performing dosage calculations be! Women less than 18 years old as there are a couple of different that!, Diversity and Inclusion in examinations, an examinee is expected that you are accurate reducing fractions them... The Best FREE drug guides for nurses shouldn ’ t make you feel scared or overwhelmed introduction metric conversions parenteral... Milligrams and micrograms, for how many tablets should be written one like mixed. For 14 hours and the denominator to reduce fractions dopamine 80… drug dosage formula, you regulate! ; and likewise, 9.546 is 9 and 546 thousandths on “ dosage calculations the way. Learn how to convert all mixed numbers are a combination of a drug ( grams, milligrams and micrograms for! Tablet dosages, the following videos are an introduction to basic drug calculations review contains questions that covers wide., milligrams and micrograms, for example, 4 grains is written as gr IV for this patient their. And why shouldn ’ t make you feel scared or overwhelmed many drops per?. That there are women over 18 years old as there are a combination of a drug is available in mg... Number in the macrodrip used for the patient in each tablet the practice problems and questions for drug dosage,! Typically only used for the patient 's weight in kg if your calculation is weight based be to.

2020 drug calculations for nurses