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The healthcare provider prescribes dobutamine 6 mcg/kg/min IV for a client who weighs 140 pounds. The IV bag contains dobutamine 250 mg in 250 mL dextrose 5% in water (DW). How many mL/hr should the nurse program the infusion pump to deliver? (Enter numeric value only. If rounding is required, round to the nearest tenth.)
Answer and Explanation

The Correct Answer is ["22.9"]

First, let’s convert the client’s weight from pounds to kilograms since the dosage is prescribed in mcg/kg/min. We know that 1 kg is approximately 2.2 lbs. So,

Weight in kg =  140 lbs/2.2  ​≈ 63.64 kg

The prescribed dose is 6 mcg/kg/min. Therefore, the total dose for this client per minute would be:

Dose per minute=6 mcg/kg/min×63.64 kg = 381.84 mcg/min

We need to convert this to mcg/hr since we want the rate in mL/hr and our final concentration is in mcg/mL. There are 60 minutes in an hour, so:

Dose per hour = 381.84 mcg/min×60 = 22910.4 mcg/hr

The IV bag contains 250 mg of dobutamine in 250 mL of solution. This is equivalent to 250,000 mcg in 250 mL, or 1000 mcg/mL.

Finally, we can find the rate in mL/hr by dividing the dose per hour by the concentration:

Rate in mL/hr = 22910.4 mcg/hr  /  1000 mcg/mL ​ = 22.91 mL/hr

If rounding is required to the nearest tenth, the nurse should program the infusion pump to deliver 22.9 mL/hr.


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Related Questions

Correct Answer is ["50"]

Explanation

First, we need to find out how many mL/hr the infusion pump is currently delivering.

Given:

The client is receiving 1,800 units/hour of heparin.

The available medication is 20,000 units/500 mL.

We can set up the proportion as follows:

1,800units/ xmL ​= 20,000units​/500mL

Solving for x gives us the volume in mL that the infusion pump is currently delivering per hour.

Cross-multiplying and solving for x:

X = 1,800units×500mL​/20,000units

After performing the calculation, we find that x equals 45 mL/hr.

Given that the healthcare provider prescribes an increase of 5 mL/hr in the IV rate, the nurse should set the infusion pump to deliver:

Newrate(mL/hr) = Currentrate(mL/hr) + Increase(mL/hr) = 45mL/hr+5mL/hr

After performing the calculation, we find that the new rate equals 50 mL/hr.

So, the nurse should set the infusion pump to deliver 50 mL/hr.

Correct Answer is ["0.4"]

Explanation

here's how to calculate the volume (mL) of ketorolac the nurse should administer:

1. Dose of ketorolac to administer:

Dose = 12 mg (given)

2. Concentration of ketorolac in the vial:

Concentration = 30 mg/mL (given)

3. We need to find the volume (mL) containing the prescribed dose (12 mg) considering the concentration (30 mg/mL) in the vial.

Volume to administer (mL): Dose (mg) / Concentration (mg/mL)

Volume to administer (mL): 12 mg / 30 mg/mL

Volume to administer (mL) = 0.4 mL (round to nearest tenth)

Therefore, the nurse should administer approximately 0.4 mL of ketorolac intravenously.

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