HESI RN Dosage Calculation Proctored Exam
Calculation
The healthcare provider prescribes cyanocobalamin injection 100 mcg IM every 3 days for a client with pernicious anemia. The vial is labeled, "1 mg/mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
mL
Explanation & Rationale
Step 1: Identify the dosage. 100 mcg Step 2: Convert mcg to mg. 100 mcg = 0.1 mg Step 3: Identify the concentration. 1 mg/mL Step 4: Calculate the volume to administer. 0.1 ÷ 1 = 0.1 mL
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