A nurse is preparing to infuse 1400 units/hr of heparin sodium for a client with pulmonary embolism (PE). The amount available is 25,000 units in a 250 mL bag of 0.9 sodium chloride. How will the nurse set up the flow rate (mL/hr)? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["14"]
Given:
Total units of heparin: 25,000 units
Total volume: 250 mL
Desired infusion rate: 1400 units/hr
Steps to solve:
Determine the infusion time:
If the nurse is infusing 1400 units/hr and has 25,000 units total, the infusion time will be:
25,000 units / 1400 units/hr = 17.86 hours (approximately 18 hours)
Calculate the flow rate in mL/hr:
Total volume of 250 mL needs to be infused over 18 hours.
The flow rate is:
250 mL / 18 hr = 13.89 mL/hr
Round to the nearest whole number:
14 mL/hr.
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Related Questions
Correct Answer is A
Explanation
A) The nurse determines that the prescription is insufficient to achieve the desired effect: Calculating the recommended dosage for a toddler weighing 20 kg, we get a range of 400 to 500 mg/day (20 to 25 mg/kg/day). The prescribed dosage of 100 mg every 8 hours (totaling 300 mg/day) falls below this range.
B) The nurse administers the prescribed dosage: Administering 100 mg every 8 hours (300 mg/day) would not provide the recommended daily dosage of 400 to 500 mg. Therefore, it would not be appropriate to administer the prescribed dosage without adjusting it.
C) The nurse contacts the pharmacist to adjust the prescribed dosage: Contacting the pharmacist is a reasonable step to ensure the prescribed dosage meets the recommended range. However, first recognizing that the current dosage is insufficient is the most immediate and critical action.
D) The nurse determines that the prescription is unsafe as it is above the recommended dosage range: The prescribed dosage of 300 mg/day is below the recommended range of 400 to 500 mg/day.
Correct Answer is ["100"]
Explanation
Given:
Total volume: 200 mL
Time: 2 hours
Steps to solve:
Determine the flow rate:
Set up a proportion to solve for the unknown flow rate (X):
200 mL/2 hr = X mL/1 hr
Cross-multiplying gives us:
200 mL x 1 hr = 2 hr x X mL
Simplifying:
200 = 2X
Solving for X:
X = 200 / 2 = 100 mL/hr
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