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A nurse is preparing to administer phenytoin 15 mg/kg PO as a loading dose to a client who weighs 264 lb. How many mg should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Answer and Explanation

The Correct Answer is ["1800"]

Convert weight from pounds (lb) to kilograms (kg):

We know 1 kg is equal to 2.2 lb.

Client's weight (kg) = 264 lb / 2.2 lb/kg = 120 kg (rounded to nearest whole number)

Calculate total phenytoin dosage:

Dosage (mg) = Client's weight (kg) × Dosage per kg (mg/kg)

Dosage (mg) = 120 kg × 15 mg/kg

Dosage (mg) = 1800 mg

Round the answer to the nearest whole number:

Rounded dosage = 1800 mg

Therefore, the nurse should administer 1800 mg of phenytoin.


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Related Questions

Correct Answer is ["1"]

Explanation

Let's break down the problem step-by-step:

Step 1: Convert the weight from pounds to kilograms.

  • We know that 1 kg is approximately 2.205 pounds.
  • So, to convert 220 pounds to kilograms, we divide by 2.205: 
    220 lb ÷ 2.205 lb/kg ≈ 100 kg

Step 2: Calculate the total dose of enoxaparin in mg.

  • We need to administer 1 mg of enoxaparin per kilogram of body weight.
  • The client weighs 100 kg, so the total dose is: 
    1 mg/kg × 100 kg = 100 mg

Step 3: Determine the volume to administer.

  • We have enoxaparin 30 mg/0.3 mL available.
  • To find the volume needed for 100 mg, we can set up a proportion: 
    (30 mg / 0.3 mL) = (100 mg / x mL)
  • Cross-multiplying, we get: 
    30x = 30
  • Solving for x: 
    x = 30 / 30 = 1 mL

Therefore, the nurse should administer 1 mL of enoxaparin.

Correct Answer is C

Explanation

A) Pound: This is a unit of weight commonly used in the imperial system, not in the metric system. While pounds are often used in everyday measurements in some countries, they are not the standard metric unit for documenting weight in medical records.

B) Ounce: This is another unit of weight used in the imperial system, typically for smaller weights. Like pounds, ounces are not part of the metric system and should not be used for documentation if metric units are required.

C) Kilogram: This is the standard metric unit of weight and is widely used in medical settings for documenting a client's weight. The metric system is preferred in healthcare because it provides a standardized and universally accepted method of measurement.

D) Pint: This is a unit of volume used in the imperial system, not a unit of weight. It is used for measuring liquids and is not relevant for documenting a client's weight in the medical record.

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