Ultimate Drug Dosage Calculations Test Bank: 25 MCQs with Expert Rationales Optimized to include the main keyword “Drug Dosage Calculations” close to the front for SEO impact Google for Developers . Kept under 60 characters to maximize click-through ra

1. Weight-Based Dosing (mg/kg)
A patient weighs 70 kg. The prescribed dose of Drug X is
5 mg/kg IV once. How many milligrams should the nurse
administer?
• A. 200 mg
• B. 300 mg
• C. 350 mg
• D. 400 mg
Answer: C. 350 mg
Rationale:
Dose = 5 mg/kg × 70 kg = 350 mg (Weight-based
medication dosing - Medscape).


2. BSA-Based Dosing (mg/m²)
An oncology patient has a BSA of 1.8 m². The
chemotherapy regimen calls for 120 mg/m². What is the
total dose?
• A. 150 mg
• B. 180 mg
• C. 200 mg
• D. 216 mg
Answer: D. 216 mg
Rationale:

, Dose = 120 mg/m² × 1.8 m² = 216 mg (Body Surface Area
Based Dosing - Medscape).


3. IV Infusion Rate (mL/hr)
An IV bag contains 1000 mL D5W. The order is to infuse
over 8 hours. What rate (mL/hr) should be set on the
pump?
• A. 100 mL/hr
• B. 120 mL/hr
• C. 125 mL/hr
• D. 150 mL/hr
Answer: B. 125 mL/hr
Rationale:
Rate = Total volume ÷ Time = 1000 mL ÷ 8 hr = 125 mL/hr
([PDF] Medication calculations).


4. IV Drop Rate (gtt/min)
An infusion set delivers 15 gtt/mL. The order is 250 mL
over 2 hours. What drop rate in gtt/min is required?
• A. 31 gtt/min
• B. 32 gtt/min
• C. 33 gtt/min
• D. 34 gtt/min