MEDICATION MEDICATION CALCULATION CALCULATION TEST REVIEWTEST REVIEW

Makeba Felton, RN, MSN, FNPC, Makeba Felton, RN, MSN, FNPC, WHNPWHNP

Academic CounselorAcademic CounselorFall, 2006Fall, 2006

WHY IS THIS WHY IS THIS IMPORTANT??IMPORTANT??

PATIENT SAFETYPATIENT SAFETY COMPETENCY AS A NURSING COMPETENCY AS A NURSING

STUDENT/ NURSESTUDENT/ NURSE SMALL MISTAKES= BIG SMALL MISTAKES= BIG

PROBLEMSPROBLEMS

What to Review??What to Review??

Handout Handout Abbreviations (front cover of book)Abbreviations (front cover of book) ConversionsConversions Medication dosagesMedication dosages IV flow ratesIV flow rates Heparin infusionsHeparin infusions IV drip ratesIV drip rates

ABBREVIATIONSABBREVIATIONS

acac pcpc hshs ouou odod qq sqsq

STATSTAT tidtid bidbid qidqid mcgmcg gttgtt IMIM

CONVERSIONSCONVERSIONS

1g= 1000 mg1g= 1000 mg 1mg= _____ mcg1mg= _____ mcg 1 L= 1000 mL1 L= 1000 mL 1tsp=5 mL1tsp=5 mL 1T= _____ mL1T= _____ mL

1mL= ____cc1mL= ____cc 1 c = ____mL1 c = ____mL 1gr= _____mg1gr= _____mg 1oz= 30mL1oz= 30mL

MEDICATION DOSAGESMEDICATION DOSAGES

RATIO AND PROPORTION….RATIO AND PROPORTION….

DOSAGE DESIRED DOSAGE DOSAGE DESIRED DOSAGE VOLUMEVOLUME

________________________________ XX _______________ _______________

STOCK WEIGHTSTOCK WEIGHT STOCK VOLUMESTOCK VOLUME

(available)(available)

MEDICATION DOSAGESMEDICATION DOSAGES

1. Order: 35 mg drug for your 1. Order: 35 mg drug for your patientpatient

Available: 40 mg per 2.5mlAvailable: 40 mg per 2.5ml

What amount do you give…..What amount do you give…..

Answer:____________Answer:____________

MEDICATION DOSAGESMEDICATION DOSAGES

2.2. Order: 0.45mg for your patientOrder: 0.45mg for your patient

Available: Tablets labeled 0.3mgAvailable: Tablets labeled 0.3mg

What amount do you give…..What amount do you give…..

Answer:____________Answer:____________

MEDICATION DOSAGESMEDICATION DOSAGES

3.3. Order: 50mg IM of a drugOrder: 50mg IM of a drug

Available: 80 mg per mLAvailable: 80 mg per mL

What amount do you give…..What amount do you give…..

Answer:____________Answer:____________

MEDICATION DOSAGESMEDICATION DOSAGES

4.4. Theophylline elixir 120 mg po Theophylline elixir 120 mg po bid.bid.

You have Theophylline elixir in You have Theophylline elixir in

80 mg/15 mL solution 80 mg/15 mL solution available. How much will you available. How much will you give??give??

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IV FLOW RATESIV FLOW RATES

FORMULA….for drops per minuteFORMULA….for drops per minute

x gttx gtt = = amount of solution x drop amount of solution x drop factorfactor

1min1min time in min time in min

IV FLOW RATESIV FLOW RATES

Formula… volume in minutesFormula… volume in minutes

x gttx gtt = = Amount of solution x drop Amount of solution x drop factorfactor

1 min1 min time in minutes time in minutes

IV FLOW RATESIV FLOW RATES

Formula for volume per hour Formula for volume per hour infusion…infusion…

x mLx mL = = amount of solution (mL)amount of solution (mL)

1 hour1 hour time in hours time in hours

IV FLOW RATESIV FLOW RATES

5.5. You need to administer D5W at You need to administer D5W at 100mL/hr. The tubing drop factor 100mL/hr. The tubing drop factor is is

10 gtt/ min. At what rate in gtt/min 10 gtt/ min. At what rate in gtt/min should the fluid be regulated at??should the fluid be regulated at??

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IV FLOW RATESIV FLOW RATES

6. You need to administer 500 mL of 6. You need to administer 500 mL of D5W over 4 hours. Your drop factor D5W over 4 hours. Your drop factor is 15 gtt/min. Calculate the IV flow is 15 gtt/min. Calculate the IV flow rate in gtt/min.rate in gtt/min.

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IV FLOW RATESIV FLOW RATES

7. How long will it take for 150 mL of 7. How long will it take for 150 mL of solution to infuse at 25 mL/ hr??solution to infuse at 25 mL/ hr??

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IV FLOW RATESIV FLOW RATES

8. A client is receiving 1000mL of 8. A client is receiving 1000mL of D5LR at 100mL/ hr. How many D5LR at 100mL/ hr. How many hours will it take for the IV to hours will it take for the IV to infuse??infuse??

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HEPARIN INJECTIONSHEPARIN INJECTIONS

Formula…Formula…

Units availableUnits available = = Units orderedUnits ordered

in 1 mLin 1 mL x amountx amount

HEPARIN INJECTIONSHEPARIN INJECTIONS

9. You are to administer 2500 units of 9. You are to administer 2500 units of heparin. What you have available is heparin. What you have available is 10,000 units/ mL. How much 10,000 units/ mL. How much heparin do you administer??heparin do you administer??

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HEPARIN INFUSIONSHEPARIN INFUSIONS

Formula…Formula…

Units of heparin in sol’nUnits of heparin in sol’n = = x unitsx units

amount of sol’n hep amount of sol’n hep rate of rate of infusioninfusion

is inis in

HEPARIN INFUSIONHEPARIN INFUSION

10.10. You are to infuse 1200 units of You are to infuse 1200 units of heparin per hour of NS containing heparin per hour of NS containing 20,000 units of heparin. What is 20,000 units of heparin. What is the rate of infusion??the rate of infusion??

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