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A nurse is preparing to administer cetirizine 5 mg PO. Available is cetirizine 2.5 mg/5 mL. How many mL 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 ["10"]

To administer 5mg of cetirizine with a concentration of 2.5mg/mL, the nurse should indeed administer 10 mL.

Here's the corrected calculation:

Desired dose: 5 mg

Concentration of available cetirizine: 2.5 mg/mL

We can find the volume to administer by dividing the desired dose by the concentration

Volume to administer = Dose / Concentration

= 5 mg / (2.5 mg/mL)

= 2 mL

However, since each milliliter only contains 2.5mg, we need to administer more than 2mL to reach the desired dose of 5mg.

To get to 5mg, we need to administer twice the amount (2 x 2.5mg = 5mg). This translates to:

Total volume to administer = 2 mL/dose x 2 doses

= 10 mL

Therefore, the nurse should administer 10 mL of the cetirizine solution.

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Correct Answer is C

Explanation

A) ML: This abbreviation stands for milliliters, which is a metric unit of volume used to measure liquids, not weight. It is essential for the newly hired nurse to distinguish between units of volume and weight to ensure accurate documentation in the medical record.

B) OZ: This abbreviation stands for ounces, which is a unit of weight commonly used in the imperial system, not in the metric system. Understanding this difference is crucial for accurate documentation of weights, especially in contexts where metric units are required.

C) mcg: This abbreviation stands for micrograms, which is a metric unit of weight used to measure very small amounts of substances, such as medications. Recognizing this abbreviation is important for precise medication administration and documentation.

D) Lb: This abbreviation stands for pounds, which is a unit of weight commonly used in the imperial system, not typically considered a metric unit of weight. Differentiating between imperial and metric units ensures proper documentation and compliance with healthcare standards.

Correct Answer is ["1"]

Explanation

First, let's convert the client's weight from pounds (lb) to kilograms (kg) since the dosage is prescribed in mg/kg. We know that 1 kg is equal to 2.2 lb. Therefore:

Client's weight in kg = 146.7 lb / 2.2 lb/kg = 66.6 kg (rounded to two decimal places)

Now, we can calculate the total metronidazole dosage for the client using the prescribed dosage of 7.5 mg/kg:

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

= 66.6 kg × 7.5 mg/kg

= 500.25 mg (rounded to two decimal places)

Since the medication is available in 500 mg tablets, we can find the number of tablets needed by dividing the total dosage by the tablet strength:

Number of tablets = Total dosage (mg) / Tablet strength (mg/tablet)

= 500.25 mg / 500 mg/tablet

= 1.0005 (rounded to five decimal places)

Since we need to round the answer to the nearest whole number, and 1.0005 is closer to 1 than 2, the nurse should administer:

1 tablet of metronidazole.

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A nurse is preparing to administer cetirizine 5 mg PO. Available is cetirizine 2.5 mg/5 mL. How many mL 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.)

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is reinforcing teaching with a newly hired nurse about documentation in the medical record. Which of the following abbreviations should the newly hired nurse identify as a metric unit of weight?

Correct Answer is C

Explanation

A nurse is preparing to administer metronidazole 7.5 mg/kg PO to a client who weighs 146.7 lb. Available is metronidazole 500 mg tablets. How many tablets 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.)

Correct Answer is ["1"]

Explanation

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A nurse is preparing to administer cetirizine 5 mg PO. Available is cetirizine 2.5 mg/5 mL. How many mL 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.)