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The nurse is preparing a client's dose of an IM analgesic in a single syringe. The prescription is hydromorphone 4 mg and hydroxyzine 25 mg. The hydromorphone is available in a 10 mg/mL ampule, and the hydroxyzine is available in a 50 mg/mL vial. How many total mL should the nurse administer? (Enter the numeric value only. If rounding is required, round to the nearest tenth.)
Answer and Explanation

The Correct Answer is ["0.9"]

Here's how to calculate the total volume the nurse should administer for the combined medication:

1. Calculate the volume of hydromorphone:

Dose: 4 mg

Concentration: 10 mg/mL (from ampule label)

Volume (mL) for hydromorphone = Dose (mg) / Concentration (mg/mL)

Volume (mL) for hydromorphone = 4 mg / 10 mg/mL

Volume (mL) for hydromorphone = 0.4 mL

2. Calculate the volume of hydroxyzine:

Dose: 25 mg

Concentration: 50 mg/mL (from vial label)

Volume (mL) for hydroxyzine = Dose (mg) / Concentration (mg/mL)

Volume (mL) for hydroxyzine = 25 mg / 50 mg/mL

Volume (mL) for hydroxyzine = 0.5 mL

3. Add the volumes for each medication to find the total volume:

Total volume = Volume (mL) for hydromorphone + Volume (mL) for hydroxyzine

Total volume = 0.4 mL + 0.5 mL

Total volume = 0.9 mL (round to nearest tenth as requested)

Therefore, the nurse should administer a total of 0.9 mL.


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Related Questions

Correct Answer is ["0.64"]

Explanation

Here's the calculation to determine the volume to administer:

Prescribed dose: 40 mg methylprednisolone

Medication vial concentration: 125 mg per 2 mL (given on the vial label)

We need to find the volume (mL) containing the prescribed dose (40 mg) of methylprednisolone.

Calculation:

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

Since the concentration is given in mg per 2 mL, we need to adjust it to mg/mL for accurate calculation:

Concentration (mg/mL) = Total mg / Volume (mL)

Concentration (mg/mL) = 125 mg / 2 mL

Concentration (mg/mL) = 62.5 mg/m

Now, with the concentration in mg/mL, we can calculate the volume to administer:

Volume to administer (mL) = 40 mg / 62.5 mg/mL

Volume to administer (mL) = 0.64 mL (round to nearest hundredth as requested)

Therefore, the nurse should administer 0.64 mL of methylprednisolone.

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.

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