Lpn nsg122 dosage calculation proctored exam
Calculation
A nurse is preparing to administer penicillin G benzathine 6 million units IM now. The amount available is penicillin G benzathine 400,000 units/mL Ha should the nurse administer? Round to the nearest whole number. Enter numeric value only (numbers and decimal points only, no commas or labels)
mL
Explanation & Rationale
Identify the given information: Prescribed dose: 6 million units of penicillin G benzathine Available concentration: 400,000 units/mL Determine the volume to be administered: We can set up a proportion to solve for the unknown volume (X): 400,000 units/mL = 6,000,000 units/X mL Cross-multiplying gives us: 400,000 units x X mL = 6,000,000 units x 1 mL Simplifying: 400,000X = 6,000,000 Solving for X: X = 6,000,000 / 400,000 = 15 mL
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