Hesi rn dosage calculation proctored exam
Calculation
A client receives a prescription for warfarin sodium 2 mg IM daily. The pharmacy delivers a vial labeled, "Warfarin sodium 5 mg/single-use vial. The instructions read, "Reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL. How many mL should the nurse administer? (Enter the numerical value only.)
mL
Explanation & Rationale
Desired dose = 2 mg Available concentration after reconstitution = 2 mg/mL Calculate the volume to administer: Volume to administer (mL) = Desired dose (mg) / Available concentration (mg/mL) = 2 mg / 2 mg/mL = 1 mL
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