Hesi pharmacology proctored exam
Calculation
A client with an extrapyramidal reaction receives a prescription for diphenhydramine 35 mg IM. The medication is supplied as 50 mg/mL in a 1 mL prefilled single use syringe. How many mL should the nurse give? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)
mL
Explanation & Rationale
Calculation: Desired dose = 35 mg. Available concentration = 50 mg/mL. Calculate the volume to administer in milliliters (mL). Volume to administer (mL) = Desired dose (mg) / Available concentration (mg/mL) = 35 mg / 50 mg/mL = 0.7 mL.
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