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A 9-year-old child who weighs 66 lb is to receive gentamicin sulfate 2 mg/kg/dose every 8 hours for an Escherichia coli urinary tract infection. How many mg per dose should this child receive? (Enter numeric value only.)
Answer and Explanation

The Correct Answer is ["60"]

Here's how to calculate the gentamicin dosage per dose for the child:

Client weight conversion:

Client weight: 66 lbs

We need the weight in kilograms (kg) for the medication dosage.

Conversion factor: 1 kg = 2.205 lbs

Client weight (kg) = 66 lbs / 2.205 lbs/kg = 30 kg (round to nearest whole number)

Gentamicin dosage:

Prescribed dose: 2 mg/kg/dose (given)

Calculate the total gentamicin amount per dose:

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

Total dose (mg/dose) = 2 mg/kg/dose * 30 kg

Total dose (mg/dose) = 60 mg (round to nearest whole number)

Therefore, the child should receive 60 mg of gentamicin sulfate per dose.


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Related Questions

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.

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

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