Hesi Medical Dosage Calculation Proctored Exam
Calculation
Penicillin G procaine 240,000 units Intramuscularly is prescribed for a 4-year-old child who has a streptococcal respiratory Infection. The medication vial is labeled 1,200,000 units/2 mL. How many ml. should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
mL
Explanation & Rationale
Dosage required: 240,000 units Vial strength: 1,200,000 units in 2 mL Calculate the volume needed: Volume = (Dosage required / Vial strength) × Volume per dose Volume = (240,000 units / 1,200,000 units) × 2 mL Volume ≈ 0.4 mL The nurse should administer approximately 0.4 mL.
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