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Nitroglycerin 125 mg diluted in 500 mL DSW (dextrose 5% in water) is infusing at a rate of 42 mcg/minute for a patient with chest pain. What rate (in mL/hr) should the nurse program into the IV pump to deliver this dose? Round your answer to the nearest tenth

A.

6.5 mL/hr

B.

9.6 mL/hr

C.

10.1 mL/hr

D.

14.8 mL/hr

Answer and Explanation

The Correct Answer is C

To calculate the rate in mL/hr for the nitroglycerin infusion, you can use the following formula:

Rate (mL/hr) = (Dose (mcg/min) / Concentration (mcg/mL)) × 60 (min/hr)

Let's plug in the values:

  • Dose (mcg/min) = 42 mcg/min
  • Concentration (mcg/mL) = 125 mg in 500 mL = (125,000 mcg in 500 mL) = 250 mcg/mL

Now, calculate the rate:

Rate (mL/hr) = (42 mcg/min / 250 mcg/mL) × 60 min/hr

Rate (mL/hr) = (0.168 mL/min) × 60 min/hr

Rate (mL/hr) = 10.08 mL/hr

Rounded to the nearest tenth, the nurse should program the IV pump to deliver the nitroglycerin at a rate of 10.1 mL/hr.


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Related Questions

Correct Answer is D

Explanation

To determine the number of milliliters (mL) per dose that the nurse should administer to the patient, you need to convert the prescribed dose (0.5 grams) to milligrams and then use the provided concentration (125 mg/5 mL) to find the mL per dose.

Convert 0.5 grams to milligrams (1 gram = 1000 milligrams): 0.5 grams = 0.5 * 1000 mg = 500 mg


Use the concentration to find the mL per dose:
Concentration: 125 mg/5 mL
Set up a proportion: (125 mg / 5 mL) = (500 mg / x mL)
Solve for x (the mL per dose): 125 mg / 5 mL = 500 mg / x mL
Cross-multiply: 125 mg * x mL = 5 mL * 500 mg
Now, divide both sides by 125 mg to isolate x: x mL = (5 mL * 500 mg) / 125 mg
x mL = 2500 mL / 125 mg
x mL = 20 mL

The nurse should administer 20 mL per dose to the patient.

Correct Answer is A

Explanation

To calculate the total amount of heparin received by the patient, you need to consider the infusion rates and the duration of the infusion.

From 9:00 am to 11:00 am, the infusion rate is 12 mL/hr, and the duration is 2 hours (from 9:00 am to 11:00 am).

12 mL/hr * 2 hours = 24 mL

From 11:00 am to 2:00 pm, the infusion rate is 10 mL/hr, and the duration is 3 hours (from 11:00 am to 2:00 pm).

10 mL/hr * 3 hours = 30 mL

Now, you know the total volume infused during each time period. To calculate the total amount of heparin received, you need to convert milliliters to units based on the concentration of heparin in the solution.

The concentration is 25,000 units in 250 mL. So, 1 mL contains 100 units of heparin.

Now, calculate the total amount of heparin received:

From 9:00 am to 11:00 am: 24 mL * 100 units/mL = 2400 units

From 11:00 am to 2:00 pm: 30 mL * 100 units/mL = 3000 units

Now, add these amounts together:

2400 units + 3000 units = 5400 units

The patient received a total of 5400 units of heparin from 9:00 am to 2:00 pm.

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