2.3 breviations and Symbols Commonly Used in Prescriptions and Medication Ab Orders 20 2.4 Labeling Prescriptions and Medication Orders 22 2.5 Calculating Percent Adherence 26 Answers to Test Yourself 28 References 29 Basics of Pharmaceutical Measurement 31 3.1 Common Systems of Measurement in Pharmacy 31 3.1.1 The International System of Units (SI System or Metric What is the available? Design of a decanter for Layer Separations [Decanter design for Pharma operations] Agitated Thin Film Dryer (ATFD) Working & Design Calculations. When autocomplete results are available use up and down arrows to review and enter to select. You can choose a lower dose if the patient is elderly or patient's body weight is normal to low See Appendix 9 on pg S317 on the 2018 Diabetes Canada guidelines for more information Care must be taken to properly convert body weig ht from pounds to kilograms (1 kg= 2.2 lb) before calculating doses based on body weight. Subjects: pharmacy math - compounding calculations . How many days should this prescription last? Again, please let me know if you are Follow these four steps to easily calculate your patient's accurate drug dosage. I bet some of you can relate to it very well. Complete IV Compounding Record sheet and place all ingredients inside a basket to be checked by the pharmacist. Answers - Sheet 1 1. Now I have a practice set of exercises for you to complete before you take a quiz over this information. Weight (kg) x Dosage Ordered (per kg) = Y (Required Dosage) I love spending 1 L = 1000 mL. within the formula. Using proportions with liquid solutions. Then round your dose to the nearest 250mg (technicians won't particularly like having to draw up a dose of 1289 mgjust go ahead and make that 1250mg). During the PTCB exam, candidates are asked questions that are based on knowledge of conversions. Finding the volume required. For example, let's assume you're tasked with converting 7.5mL to units. Write a safe prescription on the IV Formula sheet for nursing students including dosage, drop and infusion rates, unit conversion and BMI calculations contributed to the mathcentre Community Project by Shazia Ahmed, University of Glasgow. Pinterest. Step 3 - Subtract displacement volume from final volume. Here's another example 0.45 x 500 Round 0.45 to 0.5 and remember that 0.5 is a half ( 5 6) 1.71428 1.7mL 3. Here, we have put together complete study guides to help you master this. tablet, capsule, liquid). 13. 1,000,000,000 nanograms (ng) are in 1 g. The most important conversions that you should be aware of in a practical sense in medicine are the following: 1 g = 1000 mg. 1 mg = 1000 mcg. How many mL will Pediatric Dosage Calculations Most drugs in children are dosed according to body weight (mg/kg) or body surface area (BSA) (mg/m2). 43 PHARMACEUTICAL CALCULATIONS 86 SECTION-II 44 QUESTIONS 92 45 ANSWERS 136 46 PRACTICE TEST 177 47 ANSWERS 189. 3.8mL 4. Similar ideas popular now . Pharmacy Calculations for Pharmacy Technicians. Dosage calculations explaining the dimensional analysis and ratio proportion methods. This application is best viewed on a smartphone or tablet. COSMETIC FORMULAS. The actual answer is 161.8 (1dp) so if you got 1.618 or 16.618 you know this is wrong and have the decimal point in the wrong place. Central line access needed for TPN (subclavian, PICC, IJ, I-Port, etc.) Note: you may need to scroll this box down to see all the results. (Stock = digoxin 250 microgram tablets) The Required Formulas Sheet is also available as a tear-out at the back of the RxPrep Course Book. the drip rate, so we'll be using the below formula: VOLUME (mL) =RATE (mL/h) x TIME (h) 1. Sometimes it can just get a little overwhelming to remember all those formulas and unit conversions for calculating the dosage. PPN may be used when needed less than 2 weeks, if patient has good veins. To avoid cardiac complications, this powerful medication must be administered slowly at a rate not to exceed 50mg per minute. Reference Guide for Pharmacy Technician Exam Krisman www.pharmacyexam.com 1 REFERENCE GUIDE FOR PHARMACY TECHNICIAN EXAM EDITION 2014-2015 (Covers an updated 2013-PTCB Blue Print) . Students must learn about doses, concentrations, moles and molarity, displacement values, biopharmaceutics and much more. Compounding involves multiple medications or a medication-type conversion such as taking a solid (tablets) to a liquid. Problem Formula Method 5. We need 15L of wood naphtha and 285L of spirit to produce 300L of (IMS) BP. Dec 7, 2017 - Pharmaceutical Calculations Equation Sheet. Being a pharmacy technician requires a variety of skills and abilities and perhaps most important is the ability to carry out important mathematic calculations. infusion, TPN and dosages are very important in retail and institutional pharmacy settings. How many ounces of promethazine with codeine will be left after the prescription is filled? Put the values into . The calculation paper is part 1 of the registration assessment, consisting of 40 questions that need to be completed within 120 minutes. kilograms before performing the calculation. Give this calculation a try: Tania is receiving a loading dose of phenytoin IV for status epilepticus. That being said, here are eight tips to help trainees ace the calculation paper in the preregistration exam. Pharmacy Math - Compounding Calculations. Chapter 17 - Mmol, mEq, mCi, and IU. 1 tablespoon = 15 mL. 3. Patsy Pitts, the pharmacy technician at Save Rite Pharmacy, receives a prescription as follows: Promethazine with Codeine Disp: viii fl oz She sees a 16-fluid ounce bottle that appears to be about half full on the shelf. The quantity (Q) is the form and amount in which the drug is supplied (i.e. 1. The goal of this activity is to ensure that doses of medications are appropriate for each individual patient. Chapter 21 - Parts Per Million, and Reducing & Enlarging Formulas. 2.3 breviations and Symbols Commonly Used in Prescriptions and Medication Ab Orders 20 2.4 Labeling Prescriptions and Medication Orders 22 2.5 Calculating Percent Adherence 26 Answers to Test Yourself 28 References 29 Basics of Pharmaceutical Measurement 31 3.1 Common Systems of Measurement in Pharmacy 31 3.1.1 The International System of Units (SI System or Metric Basic Calculation Foundation: Ratio and Proportion and Dimensional Analysis Unit 2: Measurement Systems Used in the Practice of Pharmacy Unit 3: Calculation of Quantity and Day Supply Unit 4: Calculation of Doses Unit 5: IV Flow Rates Unit 6: Reducing and Enlarging Formulas Striving for Accuracy in Pharmacy Calculations Tips to help minimize . Ethyl Cinnamate Lab Report . 1. Stage 1: Using the formula below, calculate the total required dosage based on given the body weight. After registration she worked as a relief . Inches and pounds formula 3: BSA = ([ht(in) . . By consulting the table (and eventually memorizing the most common conversions), you find that 1 teaspoon = 5 milliliters. This Cheat Sheet is a handy reference for medical professionals on appropriate prescription abbreviations and calculating medicine dosages. carefully; (b) determine which materials are needed; and Tablet: A solid dosage form prepared from powders or then (c) select the appropriate methods of preparation and granules by compaction. The latter is popular for patients that cannot swallow solids well or are tube-fed; additionally, there is not a commercially-produced alternative so a compound . Maria gives you several prescriptions for you to practice using the formula to calculate the dosage. Plug your values into the formula and solve: (12.5mg/ 25 mg) x 2 mL .5 mg x 2 mL 1 mL. Pharmacy calculations is one of the cornerstones of any pharmacy degree. Calculations in mcg/minute. Order: Tazicef 0.6g Available: A vial of Tazicef powder Directions: Add 10 mL of sterile water. For example, if a prescription requires a patient to take 5 milliliters of a medicine, four times a day for 30 days, the technician can calculate the total supply as follows: 5 milliliters per dose, multiplied by four . Calculation of RMC's (Raw Material Cost Contribution) Crystallization Scale-Up - Zweittering Equation [Just Suspension Speed] Vent Sizing's for Reactor's & Storage vessel. This worksheet will teach you to calculate volume required for an injected dose and oral dose, as well as working with paediatric doses. So first, let's estimate the dose we want to give. Chapter 17 - Mmol, mEq, mCi, and IU. Pharmacy in 1977 and then undertook her pre-registration training with Boots the Chemist at their Wolverhampton store. 3 mL mL mL mg mg 1 3 200 600 u 3 mL 6. 2. 2mL 2. 0.6g b. Chapter 15 - Parenteral Dosage Calculations. There is a simple equation that can be used to convert between any two types of units. Know the patient's weight in kg if your calculation is weight based. Chapter 16 - Insulin. 1. These formulas include both contemporary, informational, and some historical formulas. If the patient gets 100 mL in an hour they would get half of that (50 mL) in half an hour so expected answer is 150 mL. Dosage calculations based on body weight are calculated in two main stages. Steady-State Peak and Trough Calculator: This calculator allows for patient-specific Vd, Ke, and CLv to be calculated, but it requires obtaining an additional blood sample and the results can be difficult to interpret. All these calculations require the application of various maths skills looked at in previous worksheets. Follow these steps to calculate the correct days' supply based on dosage form. Posted on May 9, 2017 Michael D. Pharmaceutical Calculations Equation Sheet. Which hopefully will be between our goal of 15-20 mcg/mL. Chapter 19 - Percentage Strength. In Pharmacy Calculations for Pharmacy Technicians: Concentrations, Dilutions and Drug Dosing the focus is shifted to drug concentrations, dilutions, and individualized drug dosing. Notice that the ABW was used in these calculations instead of the IBW - this is because creatinine is a byproduct of muscle breakdown and she can only break down muscle that she has (44 kg). Pharmacy practice uses principles from all three systems of measurement Knowing household equivalents and other conversions is crucial for pharmacy practice UNITS + CONVERSIONS Topics to Cover 1. Work efficiently. VersaPro Anhydrous Base The VersaPro Anhydrous base was specially developed and manufactured to achieve a water activity below 0.6 to allow for extended 180 day default BUDs as per . 72)(44)/(85)(0.5) = 70 ml/min]. These pharmacy calculations quizzes are a must have free resource designed to help you reinforce concepts studied while improving speed and accuracy in pharmaceutical calculations. It is fairly common to need to use Microsoft Excel as a pharmacy student, pharmacy resident, and pharmacist. While we endeavour to keep such . The drug is available in 500 mg tablets. To begin using ScriptCalc, please accept the disclaimer and policies below. 2. Determine in which units your drug is measured (units/hour, mg/hour, or mcg/kg/minute). Those of historical interest should be considered for drug information purposes. In general, a good place to start is 15-20 mg/kg. Unit 4 - Institutional Pharmacy Math. bottle (drug concentration or number of mL of fluid). Looking back at my early years as a registered nursing student, it would have been much more flexible and easier to use Pharmacy Calculations for Pharmacy Technicians rather than the abstract and formula laden math textbooks. The medication comes pre-mixed from the pharmacy at a concentration of 5mg/ml. Chapter 16 - Insulin. What is the order? Calculating drug dosage is a task that needs to be done with caution. What volume is required for an injection if 600mg are ordered and stock ampules contain 350mg/ml? Note down the key figures in the above scenario : Rate: is 100 mL/h, Time: is 1.5h : solution: Rough answer? So, 5 mL * 3 times per day * 10 days = 5 * 3 * 10 = 150 mL. Well, here is a FREE tool which makes it easier to do this task. Or another way this drug dosage formula can be expressed is: What you want / What you've got = Number of tablet (s) required. If compounding a preparation using contents from an ampoule, remember to withdraw the solution (medication) from the ampoule using a filter needle to ensure no glass particles are incorporated into the compound. Compounds. 1,500 mg 250 mg = 6 tablets. 1 kg = 2.2 lbs to convert pounds to kilograms: lbs 2.2 Example: 45 lbs 2.2 = 20.5 kg Dosage Calculations: Example: the patient weighs 20.5 kg and the dosage is 22 mg/kg 20.5 kg 22 mg/kg = 451 mg (the dose is 451 mg) To calculate the dose in milliliters, use the following formula; As the saying goes, 'if you fail to prepare, you prepare to fail'. There is a pharmacy calculations practice test for each pharmacy calculations topic including total parenteral nutrition (TPN), flowrate calculations . What weight of salicylic acid do you need to add to make a 30% w/w Ointment ? Medication Calculations Adenosine is ordered 12 mg IVP after no response to a 6 mg dose. Using 1 of the 3 methods of drug calculation as discussed above will ease the performance of manual drug calculations; Ratio and Proportion, Desired Over Have or Formula, and Dimensional Analysis. If the required concentration is 4mg in 1mL, then 20mL is needed for 80mg of drug X. The following tutorials are an introduction to basic drug calculations for nursing. How many milliliters should the patient take each day? Whichever method is employed by the healthcare provider, a second method may be of use as a check for the first method. Units of measure and conversions 2. The chapters are broken down into four units and are organized to complement most pharmacy technician training curricula and to support the ASHP model . when making your calculations. Pharmaceutical Calculations Equation Sheet. Max osmolality of 900 through the peripheral vein. Use the Required Formulas Sheet in the Quick Guides section of Chapter 1 to learn the formulas that must be memorized. Pharmacy. Post navigation. To calculate the number of tablets, use the following formula: Strength required / Stock strength = Number of tablet (s) required. In this article an experienced pharmacist provides practical tips to help make using Microsoft Excel easier. Reference Guide for Pharmacy Technician Exam Krisman . NAPLEX is a registered trademark owned by the National Association of Boards of Pharmacy (NABP). Sometimes these formulas may have a "Name" associated with them. Order: Maxipime 0.75g Available: A vial of . How many tablets should be given? After each tutorial, test your knowledge with the interactive activities. Dispense 150 ml. The leaflet is designed to be printed double-sided on A4 paper and folded into quarters lengthwise first. Complete IV Compounding Record sheet and place all ingredients inside a basket to be checked by the pharmacist. Make sure you include the correct form (g, mg, mL, etc.) Medication Calculations Phenergan is ordered 12.5 mg . A 30g B 35g C 40g D 45g E 50g Stage 2: Apply the x Q formula to calculate the actual amount of medication to be administered. 95 parts = 285L. This termdo the following: (a) read the entire formula or prescription is commonly used in compounding pharmacy. The goal of this module is to provide a basic review of the many types of pharmacy calculations that phar - macy . Calculations related to I.V., I.V. Health care professionals must dispense drugs in the accurate concentrations, calculate correct doses, and compound and prepare medications accurately to ensure that each particular drug is being administered correctly. WARNING: These cheat sheets may provide general information about health and related subjects. How many tablets should you give? With a number of different sample formulas to choose from, you can benefit from our extensive formula database to help with your day-to-day compounding needs. To determine days' supply, one multiplies the dose in milliliters by the frequency and the number of days. Utilizing pharmacy calculations to administer therapeutics to patients correctly is vital to patient treatment. She is still very wheezy and the consultant wants the salbutamol to be given IV. 2. Calculations! If we were to use the IBW of 50 kg, we would be assuming that she has 6 kg more muscle than she really has. Explore. TPN per Pharmacy Karen King, Pharm.D., BCNSP General Considerations Starting TPN is never an emergency. Convert Celsius to Fahrenheit = multiply by 1.8 and add 32. Unit 4 - Institutional Pharmacy Math. Protect the excel sheet except for the cells that need to be filled while calculating the results. It is supplied 25 mg/ 2 mL . Unformatted text preview: PHARMACEUTICAL CALCULATIONS PRPM140/L LECTURE AND LABORATORY MA'AM CLAIRE PALMA, RPH SUMMARY PHARMACEUTICAL CALCULATIONS SUMMARY SHEET COMMON METRIC UNITS Measurement unit 1g 1mg 1kg 1m 1cm 1mm 1L 1mL Conversion unit 1000mg 1000mcg 1000g 100cm 10mm 1000mcm 1000mL 1000mcL *Yellow - Weight *Blue - Volume *Orange - Length APOTHECARY SYMBOLS Measurement Minim . Nursing Medication Calculation Formulae. Give a. [6] Dosage Calculations. Find out what's in your I.V. Then using our formula: 2 mg/min x 60 min/h 120 ----- = ----- = 60 mL/h 2 mg/ml 2 These are the basic calculations we will need to do for IV therapy. The information and other content provided here, or in any linked materials, are not intended and should not be construed as medical advice, nor is the information a substitute for professional medical expertise or treatment. A simple calculation for total supply is as follows: dose multiplied by number of doses per day, multiplied by number of days. Note: If the quantity (Q) is larger than 1, you may want to simplify (cancel) before multiplying. PRACTICE DRUG CALCULATIONS - SECTION 1 Questions Answers 1 Convert the following: (a) 0.05 g to mg (b) 0.025 Litre to mLs (c) 1575 micrograms to mg (d) 750 mg to grams 2 A patient is prescribed 0.25 mg of digoxin orally once daily. Published formulas for cosmetic preparations. If 40mg displaces 0.5mL of solution, it means 80mg displaces 1mL. Converting between large and small units. 2. Universal Formula (Toney-Butler, 2021) In the universal formula (or "desired over have method"), the desired amount (D) is the dose prescribed and the amount on hand (H) or the amount you "have" is the available dose or concentration. A significant percentage of these exams, at least 25% to 30%, consist of calculations. First, you'll The information provided in this application is for general information purposes only. Medication dosage by body weight. You are filling a prescription that reads: EES 200, Sig 1 tsp t.i.d. I joined a few nursing Facebook groups to help with dosage calculation questions and met Chase Hassen, who suggested we collaborate on a nursing calculation book for students, leading to our book, Dosage Calculations for Nursing Students: Master Dosage Calculations in 24 Hours the Safe & Easy Way Without Formulas! Dec 7, 2017 - Pharmaceutical Calculations Equation Sheet. formula to learn for the exam and in real life. As suggested in a recent Pharmacy Quality Alliance (PQA) report, the Proportion of Days Covered (PDC) is the recommended medication adherence measure . 1 fluid ounce = 29.57 mL (or 30mL rounded-up) 1 teaspoon = 5 mL. What volume is required for an injection if 500mg are ordered and stock ampules contain 250mg/ml? The prescription calculator for pharmacists and pharmacy technicians. 5. Click here to use the general formula database. Calculation of formula for preparation 4. Protection of excel calculation sheet shall be done by Assistant Manager QA. Language Number of cores Overall Runtime Calculation Runtime R 1 (sequential) 1674.5 s 1652.7 s Python 1 (sequential) 420.1 s 405.6 s R 12 821.7 s 799.8 s Python 12 132.9 s 115.6 s . Drug Dosage Calculator. To help evaluate the results for a given patient, compare the AUC to the AUC estimated with the Steady-State Trough calculator. Type the formula correctly in the cell where the result will appear. DISCLAIMER. By using conversions, the pharmacy technician can . The Formula: Kilograms equals the weight in pounds divided by 2.2 kg = lbs / 2.2 Therefore a 220lb man weighs exactly 100kg 220/2.2 = 100 To convert from kilograms to pounds, you simply multiply the weight in pounds by 2.2 lbs = kg * 2.2 Therefore a 70kg woman would weigh 154lbs 70 * 2.2 = 154 The multiplication difference here is 3 (300L divided by 100 parts - we now have a relationship between both: 95 parts + 5 parts = 100 parts. A Master Formulation Record includes all necessary information and appropriate procedures to safely compound a specific non-sterile preparation, whereas the Compounding Record . Chapter 18 - Powder Volume Calculations. days' supply is as important as using the correct BUS when billing Medicaid. Chapter 20 - Ratio Strength. The flow rate formula. d. For solution or suspension products, emphasise on the importance of thorough shaking before administration.