Hesi Med Surg Proctored Exam 1
Calculation
The healthcare provider prescribes penicillin 200,000 units intramuscularly for a patient with pneumonia. The available vial is labeled “Penicillin 500,000 units/mL”. How much penicillin should be administered to the patient? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
mL
Explanation & Rationale
Step 1 is to determine the amount of penicillin in each milliliter (mL) of the available solution. The vial is labeled as “Penicillin 500,000 units/mL”. Step 2 is to divide the prescribed dose by the concentration per mL. So, the calculation is 200,000 units ÷ 500,000 units/mL. The result is 0.4 mL.
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