A client is receiving heparin intravenous (IV) at a rate of 1,800 units/hour. The IV solution is labeled, "Heparin Sodium 20,000 Units in 5% Dextrose Injection 500 mL* After receiving the partial thromboplastin time (PTT) result, the healthcare provider prescribes an Increase of 5 mL/hour in the IV rate. The nurse should set the infusion pump to deliver how many mL/hour? (Enter numeric value only.)
The Correct Answer is ["50"]
First, let’s calculate the current infusion rate in mL/hour.
The IV solution contains 20,000 units of heparin in 500 mL, so the concentration is:
Concentration = Total units/ Total volume = 20,000 units /500 mL = 40 units/mL
The client is currently receiving 1,800 units/hour. At a concentration of 40 units/mL, this dosage is equivalent to:
Current rate = Dose/ Concentration = 1,800 units/hour / 40 units/mL = 45 mL/hour
The healthcare provider prescribed an increase of 5 mL/hour in the IV rate. Therefore, the new rate should be:
New rate = Current rate + Increase = 45 mL/hour + 5 mL/hour = 50 mL/hour
So, the nurse should set the infusion pump to deliver 50 mL/hour. If rounding is required, this is already rounded to the nearest whole number.
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Related Questions
Correct Answer is ["0.6"]
Explanation
Here's the corrected calculation for the volume to be administered:
Dosage: 60 mg
Concentration: 100 mg/mL
Volume to administer:
Volume (mL) = Dosage (mg) / Concentration (mg/mL)
Volume (mL) = 60 mg / 100 mg/mL
Volume (mL) = 0.6 mL
Therefore, the nurse should administer 0.6 mL of enoxaparin sodium injection.
Correct Answer is ["100"]
Explanation
Here's how to calculate the infusion rate (mL/hour) for the cefazolin administration:
1. We know:
Total volume of cefazolin solution (including 0.9% sodium chloride): 50 mL (given)
Amount of cefazolin to administer: 1 gram (convert to mg for calculation) = 1 g * 1000 mg/g = 1000 mg
Infusion time: 30 minutes (given) = 30 minutes / 60 minutes/hour = 0.5 hours
2. We need to find:
Infusion rate (mL/hour)
3. Calculation:
The medication (cefazolin) is diluted in sodium chloride solution, but the total volume (50 mL) includes both. We only need to administer this entire volume over the specified time.
Infusion rate (mL/hour) = Total volume of solution (mL) / Infusion time (hours)
Infusion rate (mL/hour) = 50 mL / 0.5 hours
Infusion rate (mL/hour) = 100 mL/hour
Therefore, the nurse should program the infusion pump to deliver 100 mL/hour.
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