A client with deep vein thrombosis (DVT) is receiving a continuous intravenous (IV) infusion of heparin sodium 20,000 units in 5% dextrose injection, 500 mL. The infusion rate is 15 mL/hour. How many units of heparin should the client receive in 12 hours?
(Enter numerical value only.)
The Correct Answer is ["7200"]
To calculate the amount of heparin received, we need to use the formula:
Amount (units) = Infusion rate (mL/h) x Time (h) x Concentration (units/mL)
First, we need to calculate the concentration of heparin in the solution by dividing the total units by the total volume. In this case, it is 20,000 units / 500 mL.
Plugging in the given values, we get:
Amount (units) = 15 mL/h x 12 h x 20,000 units / 500 mL
Simplifying, we get:
Amount (units) = 7,200 units
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["7672.32"]
Explanation
To calculate the amount of heparin, we need to use the formula:
Amount (units) = Dose (units/kg) x Weight (kg)
First, we need to convert the weight from pounds to kilograms by multiplying by 0.454. In this case, 211.2 pounds is equivalent to 95.904 kg.
Plugging inthe given values, we get:
Amount (units) = 80 units/kg x 95.904 kg
Simplifying, we get:
Amount (units) = 7,672.32 units
Correct Answer is ["80"]
Explanation
First, we need to convert the patient’s weight from pounds to kilograms, since the dose is in mcg/kg/min. To do this, we use the metric equivalent that 1 kg = 2.2 lbs. So, we divide 132 by 2.2 and get 60 kg.
Next, we need to calculate the dose of dopamine in mcg/min for this patient. To do this, we multiply the ordered dose (2 mcg/kg/min) by the patient’s weight (60 kg). So, we get 2 x 60 = 120 mcg/min.
Then, we need to convert the dose of dopamine from mcg/min to mg/hour, since the IV bag contains dopamine in mg. To do this, we use the fact that 1 mg = 1000 mcg and 1 hour = 60 minutes. So, we divide 120 by 1000 and multiply by 60. So, we get 120 / 1000 x 60 = 7.2 mg/hour.
Finally, we need to calculate the infusion rate in mL/hour for this IV bag. To do this, we use the ratio of dopamine in mg to D5W in mL, which is 45 mg / 500 mL. So, we set up a proportion as follows:
45/500=7.2/x
To solve for x, we cross-multiply and get 45 x = 3600. Then, we divide both sides by 45 and get x = 80. So, the infusion rate is 80 mL/hour.
Therefore, the nurse should program the infusion pump to deliver 80 mL/hour. (If rounding is required, round to the nearest whole number.)
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