HESI RN Dosage Calculation Proctored Exam
Calculation
The healthcare provider prescribes ganciclovir 375 mg IV every 12 hours to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many drops/minute should the nurse regulate the gravity infusion using a drip chamber that delivers 10 drops/mL? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
drops/minute
Explanation & Rationale
Step 1: Identify the total volume. 150 mL Step 2: Identify the infusion time. 90 minutes Step 3: Calculate the infusion rate. 150 ÷ 90 = 1.6667 mL/minute Step 4: Calculate the drops per minute. 1.6667 × 10 = 16.667 Rounded to the nearest whole number = 17 drops/minute
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