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A nurse is preparing to administer cefaclor 500 mg PO every 12 hours.

If the available cefaclor oral suspension is 250 mg/5 mL, how many mL should the nurse administer per dose?
Answer and Explanation

The Correct Answer is ["10 "]

Step 1: We need to find out how many mL of cefaclor oral suspension the nurse should administer per dose.

Given:

The doctor’s order is 500 mg of cefaclor.

The available cefaclor oral suspension is 250 mg/5 mL.

Step 2: We set up a proportion to find out the volume of the oral suspension that contains 500 mg of cefaclor.

Let’s denote the volume we are looking for as X mL. So, we have:

250 mg : 5 mL = 500 mg : X mL

Step 3: We cross-multiply and solve for X. 250 mg × X mL = 500 mg × 5 mL

Step 4: We divide both sides by 250 mg. X mL = (500 mg × 5 mL) ÷ 250 mg

Step 5: We calculate X.

X = (500 mg × 5 mL) ÷ 250 mg = 10 mL

So, the nurse should administer 10 mL of the cefaclor oral suspension per dose.


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Related Questions

Correct Answer is ["8 "]

Explanation

The nurse should administer 8 mL of phenytoin. Here’s the calculation: Step 1: The total dosage required is 200 mg.

Step 2: Each 5 mL of the oral suspension contains 125 mg of phenytoin.

Step 3: So, the volume to be administered is (200 mg ÷ 125 mg/5mL) = 8 mL.

Correct Answer is ["15 "]

Explanation

Step 1: Convert the client’s weight from pounds to kilograms. 1 kg = 2.2 lb, so 44 lb ÷ 2.2 = 20 kg.

Step 2: Calculate the total daily dose of phenobarbital. The doctor ordered 6 mg/kg/day, so 6 mg/kg/day × 20 kg = 120 mg/day.

Step 3: Divide the total daily dose into two equal doses, as it is to be given every 12 hours. So, 120 mg/day ÷ 2 = 60 mg/dose.

Step 4: Calculate the volume of phenobarbital elixir to administer per dose. The available phenobarbital elixir is 20 mg/5 mL, so (60 mg ÷ 20 mg) × 5 mL = 15 mL. The nurse should administer 15 mL of phenobarbital elixir per dose.

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