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A nurse is preparing to administer phenobarbital 2 mg/kg/day IV divided in 2 equal doses to a client who weighs 165 lb. Available is phenobarbital 65 mg/mL. How many ml should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Explanation

The Correct Answer is ["1.2"]

To calculate the mL of phenobarbital to administer per dose, you can use the following steps:

    Convert the client's weight from pounds to kilograms. There are approximately 2.2 pounds in 1 kilogram.
Weight in kg = 165 lb / 2.2 lb/kg ≈ 75 kg
    
    Calculate the total daily dose based on the client's weight and the prescribed dose per kilogram:
Total daily dose = 2 mg/kg/day × 75 kg ≈ 150 mg/day
    
    Since the dose is divided into two equal doses per day, calculate the dose per dose:
Dose per dose = Total daily dose / 2 = 150 mg / 2 = 75 mg
    
    Now, you need to find out how many mL of phenobarbital 65 mg/mL corresponds to a dose of 75 mg:
Volume (mL) = Dose (mg) / Concentration (mg/mL) = 75 mg / 65 mg/mL ≈ 1.1538 mL
    
Rounded to the nearest tenth, the nurse should administer approximately 1.2 mL of phenobarbital per dose.
 


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Related Questions

Correct Answer is ["167"]

Explanation

To calculate the infusion rate in mL/hr for dextrose 5% in water 1,000 mL over 6 hours, you can use the following formula:

Infusion Rate (mL/hr) = Total Volume (mL) / Total Time (hr)

Infusion Rate = 1,000 mL / 6 hr ≈ 166.67 mL/hr

Rounded to the nearest whole number, the nurse should set the IV pump to deliver approximately 167 mL/hr.

Correct Answer is ["2500"]

Explanation

Since the total volume is 2.5 L and you need to administer it over 24 hours, the total amount to be administered is simply the entire volume.

  • Total volume to administer: 2.5 L
  • Convert to milliliters (mL): 2.5 L = 2,500 mL

So, the nurse should administer 2,500 mL over 24 hours.

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