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A client with HIV begins active labor at 38 weeks gestation and receives a prescription for zidovudine 2 mg/kg IV, to be administered over 1 hour. The client weighs 185 lb. Based on the client's weight, how many mg should the nurse prepare to administer? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
Answer and Explanation

The Correct Answer is ["168"]

here's how to calculate the total zidovudine dosage the nurse should prepare for the client:

Client weight conversion:

Client weight: 185 lbs

Medication dosage is based on weight per kilogram (kg). Therefore, we need to convert the weight to kg for accurate calculation.

Conversion factor: 1 kg = 2.205 lbs

Client weight (kg) = 185 lbs / 2.205 lbs/kg

Client weight (kg) = 84.0 kg (round to nearest tenth)

Prescribed zidovudine dose per kilogram:

Dose per kg: 2 mg/kg (given)

Calculate the total zidovudine dosage (mg) for the client:

Total dose (mg) = Dose per kg (mg/kg) x Client weight (kg)

Total dose (mg) = 2 mg/kg * 84.0 kg

Total dose (mg) = 168 mg (round to nearest whole number)

Therefore, the nurse should prepare approximately 168 mg of zidovudine for the client.


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Related Questions

Correct Answer is ["0.7"]

Explanation

The nurse should administer 0.7 mL of diphenhydramine.

Here's the calculation:

Medication dosage: 35 mg (diphenhydramine)

Medication concentration: 50 mg/mL (given on the syringe label)

We need to find the volume (mL) containing the prescribed dose (35 mg) of diphenhydramine.

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

Volume to administer (mL) = 35 mg / 50 mg/mL

Volume to administer (mL) = 0.7 mL (round to nearest tenth)

Therefore, the nurse should administer 0.7 mL of diphenhydramine

Correct Answer is ["120"]

Explanation

Here's how to calculate the rate (mL/hour) for the infusion pump to deliver lidocaine 4 mg/minute:

1. Lidocaine concentration:

The medication bag contains 1 gram of lidocaine in 500 mL of dextrose 5% in water.

Convert grams to milligrams: 1 gram = 1000 milligrams

Lidocaine concentration (mg/mL) = Total lidocaine (mg) / Volume (mL)

Lidocaine concentration (mg/mL) = 1000 mg / 500 mL

Lidocaine concentration (mg/mL) = 2 mg/mL (round to nearest whole number)

2. Prescribed lidocaine dose: 4 mg/minute (given)

3. We need to find the volume delivered per hour (mL/hour) to achieve the prescribed lidocaine dose (4 mg/minute) considering the concentration (2 mg/mL) in the bag.

Infusion rate (mL/hour) = Dose (mg/minute) x Minutes per hour / Concentration (mg/mL)

However, there's a mismatch in units between dose (mg/minute) and concentration (mg/mL).

To address this, we can convert the infusion duration (minutes) to hours to match the concentration units (mg/mL).

Conversion factor: 60 minutes/hour

Infusion rate (mL/hour) = Dose (mg/minute) x (60 minutes/hour) / Concentration (mg/mL)

Infusion rate (mL/hour) = 4 mg/minute * 60 minutes/hour / 2 mg/mL

Infusion rate (mL/hour) = 120 mL/hour (round to nearest whole number)

Therefore, the nurse should program the infusion pump to deliver approximately 120 mL/hour.

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