Medication calculation

Miss.Taghreed hawsawi

BSN- Nursing educator

• 1 mg = 1000 micrograms• 1 gm = 1000 milligrams • 1 Kg = 1000 grams• 1 Kg = 2.2 pounds • 1 L = 1000 milliliter• Drip factor of the infusion dripper 60

drops/ml• Drip factor of the IV set =15 - 20 drops/ml• Drip factor of the solu-set 60 drops/ml

• To convert from a larger unit to a smaller

unit, multiply by 1000 or move the decimal

point three places to the right

• To convert from a smaller unit to a larger

unit, divide by 1000 or move the decimal

point three places to the left

Convert 0.25 mg into micrograms0.25 × 1000 or move decimal point three places

to the RIGHT= 250 micrograms

Convert 600 micrograms to mg600 ÷ 1000 or move the decimal point

three places to the LEFT= 0.6 mg

Maintenance dose witch is giving to the patients without any drugs added and to be given in regular time and frequently through intravenous by using :

1 – Dripper machine .2 – IV set manually

= administered amount

Desired dose X Volume or dilution_____________________________

Stock in hand

What weWANT

Furosemide 250mg/10mL

FurosemideTime

6 am

12 Md

Dose

200mg

Route

IV

Start Date

18.05.07

End

Date

6 pm

12 MN

Other Time

Signature of

Doctor

P.Rescriber

What we have GOT

What it is IN

A patient is prescribed 200mg of Furosemide I.V. The ampoules available contain 250mg in 10mL. What volume containing the drug do you need to administer?

mic X Kg X min X sol ( ml )ml/hr = --------------------------------------

conc ( mg ) X 1000

What weWANT

What we have GOT

What it is IN

Dobutamin Time

6 am

12 Md

Dose

1gm

Route

IV

Start Date

18.05.07

End

Date

6 pm

12 MN

Other Time

Signature of

Doctor

P.Rescriber

20mic/kg/min

20 X 75 X 60 X 500 ml ml/hr = ------------------------------- = 45 ml/hr 1000 mg X 1000

= MIC /KG /min

Infusion (ml) X desired dose X 100

_______________________________________

B.W X Mints X Dilution

Doctor order to start Dopamine 1200mg in NSS to keep total volume 100 ml concentrated to be run by3.75m l/hr patient body weight 75kg

3.75 X 1200 X 1000-------------------------------= 10 mic/kg/min

75 X 60 X 100 ml

mic X min X sol ( ml )ml/hr = ----------------------------------

conc ( mg ) X 1000

What weWANT

What we have GOT

What it is IN

Tridil Time

6 am

12 Md

Dose

50gm

Route

IV

Start Date

18.05.07

End

Date

6 pm

12 MN

Other Time

Signature of

Doctor

P.Rescriber

1-mic/kg/min

10 X 60 X 500 ml ml/hr = --------------------------- = 6 ml/hr

50 mg X 1000

25000 IU = 500cc 1000 X 500Z = ------------------ = 20 ml/hr

1000 IU = Z 25000b) Prepare in concentrated dose, total volume 25ml

Each vial = 25000 IU/5ml 5ml + 20 NSS = 25ml25000 IU = 25 ml 1000 x 25

Z = ---------------- = 1 ml/hr1000 IU = Z 25000

total of sol (ml) ml/hr= ---------------- X drip factor

total time (min)

500 ml

-------------- X 60 = 62.5 ml/hr

480 min

Doctor order to Start Normal saline 500 ml to be infused IV using the dreper TID & infuse it with sulo set . .

total of sol ( ml )

gtt/hr = --------------------- X drip factor

total time ( min )

IV SET MANUALLY

250 ml

-------------- X 20 = 6.9 gtts/hr

720 min

6.9 X 3 = 20.7 ml/hr

Doctor order to Start Dextrose10% 250 ml to be infused IV every 12hr BID

Amount of ordered IVF ------------------------------ = ml/ h

Totaled hour