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This tutorial provides a step-by-step guide for calculating intravenous (IV) drug doses based on patient weight. Using practical examples, it demonstrates how to convert patient weight, determine the required dosage in micrograms or units, and perform the necessary calculations. For instance, learn how to infuse dopamine at 10 mcg/kg/minute for a 22 lbs patient and determine the appropriate amount of regular insulin at 0.05 units/kg/hour for a 64 kg patient. Follow these essential steps to ensure safe and effective medication administration.
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Calculating IV Drug Dose based on Weight ProCalc Nsg 231
Calculating IV Drug Dose based on Weight • Example 1 Your patient’s current weight is 22 lbs. Dopamine is to be infused at 10 mcg/kg/minute. How many mcg of dopamine should you infuse per minute? • To find the mcg per minute: • Step 1 – Write down patient wt & convert if necessary • Step 2 – Write down the IV dosage • Step 3 – Reduce units • Step 4 – Perform the math Step 1 Step 2 Step 4 22 lbs 1 1 kg 2.2 lbs 10 mcg 1 kg/min 22 x 1 x 10 mcg 220 mcg x = = x = 100 mcg min 1 x 2.2 x 1 min 2.2 min Step 3
Calculating IV Drug Dose based on Weight • Example 2 Your patient’s current weight is 64 kg. Regular insulin is to be infused at 0.05 units/kg/hour. How many units of Regular insulin should you infuse per hour? • To find the units per hour: • Step 1 – Write down patient wt & convert if necessary • Step 2 – Write down the IV dosage • Step 3 – Reduce units • Step 4 – Perform the math Step 1 Step 2 Step 4 64 kg 1 0.05 units 1 kg/hour 64 x 0.05 units 3.2 units = = x 1 x 1 hour 1 hour Step 3
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