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Dosage Calculation Competency Worksheet with Answers, Exercises of Nursing

Dosage calculation study guide with sample questions and answers in end.

Typology: Exercises

2020/2021

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Study Guide with Sample Questions
Dosage Calculation Competency
Applicants to the LPN-to-Associate Degree "Bridge"Nursing Program must document
competency
in
dosage calculation that is equivalent to the content covered in NUR 135.
The minimum accuracy rate is 78%, and is the same as the minimum pass rate for traditional four-
semester nursing students (those who are not LPNs) who pass NUR 135. The test has 28
questions.
Applicants to the "bridge" program must take the dosage calculation competency test or be
currently enrolled in NUR 135.
Applicants may take the dosage calculation competency exam once in order to demonstrate
competency.
If
an applicant does not attain at least 78% accuracy, he or she must enroll in and
pass NUR 135 before being admitted to the "bridge" program.
In
order to attain an accuracy rate of at least 78%, test-taken must be able to perform the
following:
o
Conversions between and within metric, apothecary and common household units of
measure used in medication administration;
o
Basic dosage calculation;
o
Pediatric dosag calculation based on weight and body surface area (BSA);
o I.V.drip rate calculation;
o
Calculation of infusion times;
o
Continuous heparin infusion calculation; and
o
Critical care cafoulations (using an infusion pump or infusion device) including calculating
the mUhour rate, the dose per minute or per hour, and the dose based on infusion rate.
The dosage calculation competency test is given as a proctored assessment in the college's Testing
Center, located in the Library in Martin Hall.
o
Test-takers may use a basic calculator that does not store data. Students may NOT use the
calculator function on their mobile phones. No other items, such as paper, books, or
electronic devices are permitted in the test room.
o
"Scratch" paper will be provided as needed. All paper provided must be returned whether
or not the paper was used. For example, if three sheets of paper are provided, three sheets
must be returned.
Test-takers must present photo identification , such as a driver's license, before being permitted to
take the test.
Test-takers must complete the entire test in one sitting. In other words, one may not begin the test
and return to finish at a later time. Test-takers should allow at least 90 minutes for completing the
test.
Testing is available in the Martin Hall Test Center from October 1 to October 31 during the test
center's regular hours of operation. The test must be started no later than two hours prior to
closing time.
Test-takers will not need an appointment: however, please note the days and hours available for
testing, and the time parameters for beginning and completing the test.
The deadline for taking the test is October 31.
Lorrie Coe-Meade will grade the test and notify you of test grade results via your college e-mail address.
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Study Guide with Sample Questions

Dosage Calculation Competency

  • Applicants to the LPN-to-Associate Degree "Bridge"Nursing Program must document

competency indosage calculation that is equivalent to the content covered in N UR 135.

  • The minimum accuracy rate is 78%, and is the same as the minimum pass rate for traditional four- semester nursing students (those who are not LPNs) who pass NUR 135. The test has 28 questions.
  • Applicants to the "bridge" program must take the dosage calculation competency test or be currently enrolled in NUR 135.
  • Applicants may take the dosage calculation competency exam once in order to demonstrate competency. Ifan applicant does not attain at least 78% accuracy, he or she must enroll in and pass NUR 135 before being admitted to the "bridge" program.
  • Inorder to attain an accuracy rate of at least 78%, test-taken must be able to perform the following: o Conversions between and within metric, apothecary and common household units of measure used in medication administration; o Basic dosage calculation; o Pediatric dosag calculation based on weight and body surface area (BSA); o I.V.drip rate calculation; o Calculation of infusion times; o Continuous heparin infusion calculation; and o Critical care cafoulations (using an infusion pump or infusion device) including calculating the mUhour rate, the dose per minute or per hour, and the dose based on infusion rate.
  • The dosage calculation competency test is given as a proctored assessment in the college's Testing Center, located in the Library in Martin Hall. o Test-takers may use a basic calculator that does not store data. Students may NOT use the calculator function on their mobile phones. No other items, such as paper, books, or electronic devices are permitted in the test room. o "Scratch" paper will be provided as needed. All paper provided must be returned whether or not the paper was used. For example, if three sheets of paper are provided, three sheets must be returned.
  • Test-takers must present photo identification , such as a driver's license, before being permitted to take the test.
  • Test-takers must complete the entire test in one sitting. In other words, one may not begin the test and return to finish at a later time. Test-takers should allow at least 90 minutes for completing the test.
  • Testing is available in the Martin Hall Test Center from October 1 to October 31 during the test center's regular hours of operation. The test must be started no later than two hours prior to closing time.
  • Test-takers will not need an appointment: however, please note the days and hours available for testing, and the time parameters for beginning and completing the test.
  • The deadline for taking the test is October 31.
  • Lorrie Coe-Meade will grade the test and notify you of test grade results via your college e-mail address.
  • The following pages contain sample test questions and answers.

Instructions to ensure a correct answer

l. Round all answers to medication problems to the nearest tenth. Kilogram weights should be rounded immediately, before proceeding with the problem. Otherwise, don't round until you get to the final answer. Answers that are not correctly rounded to the nearest tenth are graded as incorrect. For example, 3.25 is rounded to 3.3.

  1. I.V. flow problems are rounded to the nearest whole drop. For example, 33.3 is rounded to 33 drops.
  2. If the answer is less than 1 , with no whole number before the decimal point, ALWAYS place a zero in front of the decimal. This is a safety issue. An answer on the test not preceded by a zero as appropriate will be graded as an incorrect notation. For example,. 7 must be written as 0.7 in order to be considered appropriate notation.
  3. If the answer is 1,000 or above indicate the number with a comma.
  4. ALWAYS omit terminal zeros. Answer containing terminal zeros violate patient safety standards, and will be graded as an incorrect notation. For example 12. 50 must be written as 12. 5 in order to be considered appropriate notation.
  5. The answer must be labeled in correct terms. In incorrectly labeled answer is considered a wrong answer. For example, 7 mg is not the same as 7 mL.

7. Metric units of measure are expressed indecimals; apothecary units of measure are expressed in

fractions. For example, 30 mg = Yz gr. Fractions must always be reduced to lowest terms.

8. On the test, circle your ONE final answer. If any answer in the circle in incorrect, the answer is

graded an incorrect. Ifno answer is circled, then the question is determined to be unanswered and

graded as incorrect.

Conversions

  1. 2 lb = 1 kg 1 grain = (^60) mg

1 minim 1 gtt

15 minims = 1 mL

t oz = 30 mL

t dram = 4 mL

1 t = (^) S mL I T lS mL Roman Numerals

1 = I

IO

= v

x

1 mL =^15 gtt

1 mL t ern = I cc l O mm 1 inch = 2 .S cm

Sample Problems for Continuous l.V. Heparin Drip Calculations

  1. The physician writes an order for heparin 900 units/hr. The label on the I.V. bag reads: Heparin 10 , 000 units in 500 mL D 5 W. How many mL/hr will deliver the correct dose? 13._Administer Heparin 1 , 000 units/hr from an l.V. bag mixed 40,000 units in 1 L DsW. How many mL/hr will deliver the correct amount of heparin?
  2. The patient's heparin is infusing at 28 mL/hr on an infusion pwnp. The bag of fluid is mixed 20 , 000 units of heparin in 500 mL D 5 W. What hourly dose of heparin is the patient receiving?
  3. The patient's heparin drip is infusing at 11 mL/hr on an infusion pwnp. The bag of fluid is mixed 25,000 units of heparin in 250 mL DsW. What hourly dose of heparin is the patient receiving? Answers at the end of study guide. Sample Problems for Critical Care Calculations for I.V. Infusions

Calculating the ml /hr Rate

  1. Give Regular insulin by continuous I.V. infusion at 20 units/hr. The solution is 250 mL NS with 100 units of Regular insulin. What rate on the infusion pump will deliver the correct dose?

17. Administer a Tbeophylline drip at 40 mg/hr 1.V. The solution is 250 mL DsW + Theophylline 500

mg. What rate on the infusion pump will deliver the correct dose?

Calculating the pose per Minute or per Hour

18. Give Tridil 15 mcg/minute. Tridil is mixed 50 mg in 500 mL Ds W. What rate on the infusion

pump will deliver the correct dose?

  1. Give propofol 10 mcg/kg/minute. The infusion is mixed propofol 250 mg in 250 mL DsW. The patient weighs 168 pounds. What rate on the infusion pump will deliver the correct dose?

20. Give Nitroprusside 5 mcg/kg/minute via continuous infusion for a patient weighing 205 lbs.

Nitroprusside is available in a solution of 200 mg in 250 mL D 5 W. What rate on the infusion pwnp will deliver the correct dose? Calculating the Dose Based on Infusion Rate

21. Tridil is infusing at 15 mL/hr on an infusion pump. The drug is mixed 50 mg in 500 mL Ds W.

How many mcg/minute is the patient receiving?

  1. A lidocaine drip is infusing at 30 mL/hr on an infusion device. The drug is mixed 2 g in 500 mL DsW. How many mg/minute is the patient receiving?
  2. Aminophylline is infusing at 30 mL/hr. The drug is mixed 250 mg in 500 mL D 5 W. How many mg/hr is the patient receiving? Answers at the end of study guide.