Begin intravenous infusion of heparin at 15 units/kg/hr using 25,000 units heparin in 250 mL D5W. The patient weighs 75 kg. Determine the initial intravenous rate of heparin in mL/hr.
Do not provide the unit of measurement. Only provide the number. Round to one decimal place (tenths).
The Correct Answer is ["11.3"]
Step 1: Calculate units/hr: 15 units/kg/hr × 75 kg = 1125 units/hr
Step 2: Determine concentration: 25,000 units ÷ 250 mL = 100 units/mL
Step 3: Calculate mL/hr: 1125 units/hr ÷ 100 units/mL = 11.25 → 11.3
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["175"]
Explanation
Step 1: Total volume ordered = 500
Step 2: Time ordered = 4 hr
Step 3: Time elapsed = 2 hr
Step 4: Remaining time = 4 − 2 = 2 hr
Step 5: Remaining volume = 350
Step 6: New flow rate = 350 ÷ 2 = 175
Final Answer: 175
Correct Answer is ["2.5"]
Explanation
Step 1: Available concentration = 1 g/5 mL = 1000 mg/5 mL = 200 mg/mL
Step 2: Ordered dose = 500 mg
Step 3: Volume to administer = 500 ÷ 200 = 2.5
Final Answer: 2.5
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