Drug Calculation

Drug Calculation mohammed alhabsi indanan, RN

sketch out of my talks ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Conversion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],÷ X 1000 1000

Methods of Calculation ,[object Object],[object Object],[object Object]

Basic Formula ,[object Object],[object Object],[object Object],[object Object],[object Object],X V = Amount to Give

Basic Formula: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],x = = 2ml 5

Ratio & proportion Extremes Means X : D :: V : H Desired Known

Ratio & proportion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],= X

Ratio & proportion: 250X = 1000 1000 250 X = X = 4 capsules X : 1000 :: 1 : 250

Fractional Equation ,[object Object],H V = D X HX = DV = DV H

Fractional Equation ,[object Object],[object Object],[object Object],0.125 1 = 0.25 X 0.125X = 0.25 X = 0.25_ 0.125 X = 2 tablets

Intravenous Flow Rate Calculation ,[object Object],[object Object],[object Object],[object Object],[object Object],= gtts/min Two step One step

Intravenous Flow Rate Calculation ,[object Object],[object Object],[object Object],[object Object],1000 8 = 125ml/hr 125x15 60 = 31 gtts/min Two step

Intravenous Flow Rate Calculation ,[object Object],[object Object],= = 31 gtts/min One step

Continuous Infusion calculation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],= ml/hr = mg/hr

Continuous Infusion calculation mg/min (Lidocaine, Pronestyl) 1mg = 7 cc/hr 2 mg = 15 cc/hr 3 mg = 22 cc/hr 4 mg = 30 cc/hr Lidocaine, Pronestyl 2 gms/250 cc D 5 W Rule of Thumb

Continuous Infusion calculation ,[object Object],[object Object],[object Object],[object Object],[object Object],= cc/hr = mcg/hr

Continuous Infusion calculation mcg/min (Nitroglycerin) 1 cc/hr = 3.3 mcg/min NTG 50 mg/250 cc 1 cc/hr = 6.6 mcg/min NTG 100 mg/250 cc Rule of Thumb

Continuous Infusion calculation ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],X 60min X 86kg X 5mcg/kg/min = 16.1ml/hr

Continuous Infusion calculation ,[object Object],[object Object],[object Object],[object Object],=mcg/kg/min

Continuous Infusion calculation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],= = 2.5mcg/kg/min

Look 1 st for dosage concentration for all drug calculation ,[object Object],[object Object],[object Object],[object Object],[object Object],=1600mcg/ml =26.6mcg/ml/min

How to calculate mcg/kg/min if you know the rate of infusion? ,[object Object],[object Object],[object Object],[object Object]

Common Drug infusion & how they are given 0.05 mg/kg/min Esmolol 2 - 10 mcg/min Epinephrine 1 - 20 mcg/kg/min Dopamine 2 - 20 mcg/kg/min Dobutamine 5 - 15 mg/hr Diltiazem 1 - 2 mg/min Bretylium 0.5 mg/min x 24hrs Amiodarone 5 - 15 mcg/kg/min Amrinone 0.5 - 0.7 mg/kg/hr Aminophylline Dosage Medication

Common Drug infusion & how they are given 1-4 mg/min Procainamide 0.5 - 30 mcg/min Norepinephrine 0.1 - 5 mcg/kg/min Nitroprusside 10 - 20 mcg/min Nitroglycerin 0.5 - 1 g/hr x 24 hrs Magnesium Sulfate 30 - 50 mcg/kg/min or 2 - 4 mg/min Lidocaine 2 - 8 mcg/min Labetalol 2 - 10 mcg/min Isoproterenol

LET’S DO SOME EXCERCISES.. ,[object Object],[object Object]

LET’S DO SOME EXCERCISES.. ,[object Object]

Drug Calculation

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