The healthcare provider prescribes the standard heparin protocol for a client who weighs 95 kg and is diagnosed with a deep vein thrombosis. The loading dose is an IV bolus of 80 units/kg. Heparin is available in vials of 5,000 units/mL. How many mL of heparin should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["1.5"]
Given:
Ordered loading dose of Heparin: 80 units/kg
Patient weight: 95 kg
Concentration of Heparin: 5,000 units/mL
Step 1: Calculate the total loading dose of Heparin:
Total loading dose (units) = Ordered dose (units/kg) x Patient weight (kg)
Total loading dose (units) = 80 units/kg x 95 kg
Total loading dose (units) = 7600 units
Step 2: Calculate the volume to be administered:
Volume (mL) = Total loading dose (units) / Concentration (units/mL)
Volume (mL) = 7600 units / 5000 units/mL
Volume (mL) = 1.52 mL
Step 3: Round to the nearest tenth:
Volume (mL) ≈ 1.5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["7"]
Explanation
Given:
Ordered dose of Nesiritide: 0.01 mcg/kg/minute
Patient weight: 155.1 pounds
Bag size: 250 mL D5W
Concentration of Nesiritide: 1.5 mg
Step 1: Convert patient weight from pounds to kilograms:
1 pound (lb) = 0.453592 kilograms (kg)
Patient weight in kg = 155.1 lbs x 0.453592 kg/lb = 70.3 kg
Step 2: Calculate the total dose of Nesiritide in mcg/minute:
Total dose (mcg/minute) = Ordered dose (mcg/kg/minute) x Patient weight (kg)
Total dose (mcg/minute) = 0.01 mcg/kg/minute x 70.3 kg
Total dose (mcg/minute) = 0.703 mcg/minute
Step 3: Convert mcg/minute to mg/hour:
Total dose (mg/hour) = Total dose (mcg/minute) x 60 minutes/hour / 1000 mcg/mg
Total dose (mg/hour) = 0.703 mcg/minute x 60 minutes/hour / 1000 mcg/mg
Total dose (mg/hour) = 0.04218 mg/hour
Step 4: Calculate the infusion rate in mL/hour:
Infusion rate (mL/hour) = Total dose (mg/hour) / Concentration (mg/mL)
Infusion rate (mL/hour) = 0.04218 mg/hour / (1.5 mg/250 mL)
Infusion rate (mL/hour) = 0.04218 mg/hour x (250 mL/1.5 mg)
Infusion rate (mL/hour) = 7.03 mL/hour
Step 5: Round to the nearest whole number:
Infusion rate (mL/hour) ≈ 7 mL/hour
Correct Answer is ["0.7"]
Explanation
Given:
Ordered dose of Filgrastim: 410 mcg SUBQ every day
Concentration of Filgrastim: 600 mcg/mL
Step 1: Set up the proportion:
Desired dose (mcg) / Volume to administer (mL) = Concentration (mcg/mL)
Step 2: Substitute the values:
410 mcg / Volume = 600 mcg/mL
Step 3: Solve for the unknown volume:
Volume = 410 mcg / (600 mcg/mL)
Volume = 410 mcg x (1 mL / 600 mcg)
Volume = 0.6833 mL
Step 4: Round to the nearest tenth:
Volume ≈ 0.7 mL
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