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 ["75"]
Explanation
The prescribed dosage is 15 mL every 12 hours, so the total daily dosage in mL would be:
DailydosageinmL = 2 × Dosageperdose = 2 ×15mL = 30mL
The medication is available in a concentration of 12.5 mg/5 mL. Therefore, the total daily dosage in mg would be:
Dailydosageinmg=DailydosageinmL×Concentrationinmg/mL=30mL×5mL12.5mg=75mg
So, the client receives a total daily dose of 75 mg of diphenhydramine.
Correct Answer is ["0.7"]
Explanation
To find the volume of diphenhydramine the nurse should administer, we can divide the prescribed dose (mg) by the concentration (mg/mL) of the medication, and round to the nearest tenth:
1. Prescribed dose: 35 mg of diphenhydramine
2. Medication concentration: 50 mg/mL (milligrams of diphenhydramine per milliliter of solution)
3. Calculate the volume to administer:
Volume (mL) = Dose (mg) / Concentration (mg/mL)
Volume (mL) = 35 mg / 50 mg/mL
Volume (mL) = 0.7 mL (round to the nearest tenth)
Therefore, the nurse should administer 0.7 mL of diphenhydramine.
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