Fall 2020 Practice Word Problems and Dosage Calc Practice Instructions PDF

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Dosage Calculation Assignment...

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Fall Dosage Calculations Test Instructions Students must pass a computerized Dosage Calculation Test with a grade of at least 90% or they will be withdrawn from the program. There will be 3 attempts to achieve this grade.

There will be 20 calculations worth 5 points each You must make 90% or above to pass the test.) ROUNDING RULES: 

During all problems, carry out (do not round up) all decimal numbers to the thousandths place (3 decimal places). For example, if the answer within the problem (not the final answer) is 26.2546, you would use 26.254 you would NOT round up to 26.255. This applies to problems that require several steps with answers that are needed for the final answer. (This is a Lone Star College System (LSCS) rule and differs slightly from the Pickar textbook. You must use the LSCS rules in order to get the correct answer on the dosage calculations exam.)

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Final answer rounding: Pediatric dosages: final rounding is to the hundredths place (2 decimal places). For example, a final answer of 18.245 would round up to 18.25. (This is a Lone Star College System (LSCS) rule and differs slightly from the Pickar textbook. You must use the LSCS rules in order to get the correct answer on the dosage calculations exam.)

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All adult dosages: final rounding is to the tenth place (1 decimal place). For example, a final answer of 14.268 would round up to 14.3. A number must be 5 or greater to round the previous number up higher. In this case the 6 in the hundredths place is 5 or higher so the 2 in the tenths place rounds up to 3. (This is a Lone Star College System (LSCS) rule and differs slightly from the Pickar textbook. You must use the LSCS rules in order to get the correct answer on the dosage calculations exam.)

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No credit will be given for those problems missed due to rounding errors.

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Remember your final answers must not have “trailing zeros” after the decimal point ie; 16.20 – the correct answer is 16.2. If the answer is less than one, the answer must have a zero before the decimal ie; .16 – the correct answer is 0.16. This rule is necessary to prevent dosage error due to misreading the dose. No credit will be given to answers that have trailing zeros or do not have a zero before a number less than one.

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Scratch paper will be given and you must show every step of your work in order to receive credit for every question on the test, including conversion problems.

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While taking the test on the computer, you will type the numeric value of the answer only. You do not type the descriptor, ie; tablet, mL, oz, etc.

After reviewing Chapters 2 & 3 in your Dosage Calculations Textbook and working these problems and you are still having difficulty understanding the problems, you must go online and schedule a request session date and time with a tutor to help you. Math tutoring is available Sunday – Friday, times vary. You should have these exams, answer keys, and your textbook available for your appointment. You must have an understanding of how to work these dosage calculations before coming to class.

bid = twice a day tid = three times a day qid = four times a day po = by mouth SQ = subcutaneous IM = Intramuscular Practice Questions If you can understand and master each of these questions, you should do well on the exam. 1. Ordered: digoxin 250 mcg po qid. Available: 1 tablet equals 0.25 mg. Administer: __4_______ tablet(s)/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Show your work: 1mcg=0.001 250mcg x 0.001 mg = 0.25 mg 1 tab / 0.25mg= 4 tablets

2. Ordered: naproxen 1,375 mg per day. Available: 1 tablet equals 0.275 g. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). a. Administer: __5______ tablet(s) per day. Show your work:

1 g=1000mg 1375/1000=1.375g/0.275=5tablets How many tablets will be given at each scheduled dose if it is ordered to be given bid? Show your work: 5x2=10 3. Ordered: ketrolac 12 mg. Available: ketrolac 15 mg per 1 mL. Administer: ____0.8______ mL. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Using ratio and proportion to solve the problem: Show your work: 12 mg = 15 mg X mL 1 mL 15 X = 12 X = 0.8 mL Using the Formula Method Show your work: Step A. D (Dosage ordered) X Q (Quantity on hand) H (Dosage on hand Step B. 12mg (Dosage ordered) X (multiplied times) 1 mL (Quantity on Hand) 15mg (Dosage on hand)

Step C. 12/15 = 0.8 Step D. 0.8 X 1 mL = 0.8 mL You may choose to work problems with the Ratio & Proportion Method, Formula Method, or Dimensional Analysis (See Henke’s Med-Math; chapter 4). You just need to show all steps of whichever method you choose to use. However, the Answer Key shows only the calculations using the ratio and proportion method. If you use another method, just be sure that your method comes up with the same answer.

4. Ordered: Heparin Sodium 6,000 units every 6 hours by subcutaneous injection. Available: Heparin Sodium 10,000 USP units/mL. Administer: ___0.6____ mL/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Show your work: 6000u x 1ml/10000u= 0.6ml 400 Administer 26 ml 5. Ordered: 0.4 mL of potassium iodide expectorant. Available: The label reads 325 mg per teaspoon (t). How many milligrams are contained in the 0.4 mL dose? 0.0812mg Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Show your work: 0.4ml x 0.203ml= 0.0812 0.203t x 325mg= 0.0812

6. Ordered: 600 mg of ampicillin given IM every 8 hours. The directions for dilution on the 2 g vial reads: Reconstitute with 4.9 mL of sterile water to obtain a concentration of 400 mg per mL. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Administer: ______ mL/dose. Show your work: 600mg/400mg/ ml =1. 5ml

7. Ordered: 180 mg of phenytoin po every 8 hours. Available: 250 mg per 5 mL. Administer: _4_______ mL/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Show your work: 180mg x 5ml/250mg= 3.6 =4 ml

8. Ordered: amoxicillin 10 mg IM every 6 hours. Available: Amoxicillin 125 mg per 5 mL. Administer: __0.4________ mL/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Show your work: 10mg x 5ml/125mg= 0.4

9. Ordered: cephalexin 0.5 ounces po every 6 hours. Liquid cephalexin is ordered because he is not able to swallow pills. Available: Cephalexin oral suspension 125 mg per 5 mL. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Administer: ____739_____ mg/dose. Administer: ________1__ T. Show your work: 29.574 x 125mg/5ml= 739.35mg 10. Ordered: atropine 0.6 mg IM. Available: atropine 0.3 mg per 0.5 mL. Administer: ___1______ mL/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest tenth (1 decimal place). Show your work: 0.6 x 0.5ml/0.3mg= 1

11. Ordered: ceftazidime 50 mg/kg po TID to a child who weighs 25.5 kg. Available: ceftazidime oral suspension labeled 100 mg/mL. Administer: _12.75_________ mL/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest hundredth (2 decimal places).

Show your work: 50mg x 25.5 kg = 1275mg/100=12.75 12. Ordered: amoxicillin 20 mg/kg po every 8 hours to a two year old, who weighs 30 pounds. Available: amoxicillin 125 mg per 5 mL. Administer: __10.872_______ mL/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest hundredth (2 decimal places). Show your work: 0.453 x 30 lb = 13.59 kg 20 x 13.59 = 271 mg x5ml/125mg= 10.872

13. Ordered: midazolam HCL 0.08 mg/kg IM, 30 minutes before surgery. The child weighs 100 pounds. Available: midazolam 5 mg/mL. Administer: _________ mL. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest hundredth (2 decimal places). Show your work:

14. Ordered: ibuprofen 5 mg/kg po every 4 hours for fever over 102 degrees Farenheit (F). The child weighs 30 pounds and has a fever greater than 102 F. Available: ibuprofen 100 mg/5 mL. Administer: _________ mL/dose Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest hundredth (2 decimal place). Show your work:

15. Ordered: Solumedrol 1.5 mg/kg for a child weighing 74.8 lb. Available: Solumedrol 125 mg/2mL. Administer: _________ mL. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, if necessary, round up to the nearest hundredth (2 decimal places). Show your work:

16. Ordered: 100,000 units of penicillin/kg every day, for a 66 pound child. How many units will you administer per dose, if the medication must be given every 6 hours? Administer _____________ units/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, round up to the nearest hundredth (2 decimal places).

Show your work:

17. Ordered: 1200 mg of guaifenesin every day for a 10 year old child. How many mg will you administer if the medication must be given every 4 hours? Administer ______________ mgs/dose. Enter the numeric value only. If necessary during the problem, carry out to the thousandth place (3 decimal places). For the final answer, round up to the nearest hundredth (2 decimal places). Show your work:...