DRUG Calculation

PRESENTED BY:

NAJAH AL-JOHANI

10 Rights Of Medication Administration

1. Right patient2. Right medication

3. Right dose 4. Right time 5. Right route

6. Right education7. Right documentation

8 .Right to refuse9 .Right assessment

10.Right evaluation

Common Unit Conversions:

1 Liter = 1000 Milliliters1 Kilogram = 1000 gram1 Gram = 1000 Milligrams1 Milligram = 1000 Micrograms

Cont..

To convert larger units to smaller the larger is multiplied:

-Kilograms (kg) to grams (g) = kg x 1,000-Grams to milligrams (mg) = g x 1,000-Milligrams to micrograms (mic) = mg x 1,000-Liters (L) to milliliters (ml) = L x 1,000

Cont..

To convert smaller units to larger the smaller is divided:

-Milligrams to grams = mg÷1,000-Micrograms to milligrams = mic÷1,000-Milliliters to liters = ml÷1000

What is the Infusion device!!..

• An electronic device used to control the administration of intravenous fluids and medication in very small amounts and at a carefully regulated rate over long periods.

Types of Infusion

1.Continuous infusion.2.Intermittent infusion.3.Patient-controlled 4.Total parenteral nutrition

Drop Factor..

• It is an formula to calculate the certain amount of liquid ,a time is period and a drop factor to give the necessary IV flow rate per minute . Measurement used when IV is regulated manually.

• There is different type of drop factor according to infusion set that we should use :

10gtts/ml15gtts/ml20gtts/ml60gtts/ml

Cont..gtts/min

Example: : Calculate the IV flow rate for 1200 mL of NS to be infused in 6 hours. The infusion set is calibrated for a drop factor of 15 gtts/mL.Convert 6 hours to minutes.hr→ min ( x by 60 )6 hr x 60 = 360 minX15gtts/ml =50gtts/min

Calculation via infusion pump

* For flow rate:=ml/h

Example: administer 3000ml D5NS/24 hour

Drug calculation via syringe pump

*FOR DOPAMINE &DOBUTAMINE:[According to body weight(kg)]

Example: the order 5 /kg/min(patient 𝝁𝒈wt=70kg)

Cont..

Double strength:1] 400mg(2vial)+40mlD5W/NS50ml=400mg2]concentration=

=2.6ml/hr

Cont..*For LEVOPHED (NORADRENALINE):

Example: the order 5mic/min Double strength :1]1amp=4ml=4mg

6ml+44ml D5W=50ml2]concentration =6mgX1000=6000meg

2.5ml/h

Cont..

*For Amiodarone:

Example : start 1mg/min for 6H??1amp=3ml=150mg6amp=18ml=900mg18+32D5%=50ml

Cont..*For Lasix:1amp=2ml=20mg10ml=20ml=200mg20ml+30mlNS=50ml

=ml/hExample :the order is 4mg /h??

Cont..

*For FENTANYL:=ml/h

Example: start fentanyl 5mic/hr??1amp=2ml=100preparation:500amp(10ml)+40ml=50ml=500mic

Cont..

*For Insulin:Regular insulin 1ml=100unit1ml+49mlNS=50ml1ml=2unit/h

THANK YOU

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الله عليه وسلم:

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