A nurse is preparing to administer lorazepam 0.05 mg/kg IM 2 hr prior to surgery to a client who weighs 138 lb. If the available lorazepam injection is 2 mg/mL, how many mL should the nurse administer? .

Answer and Explanation

The Correct Answer is ["1.57 "]

Step 1: Calculate the dose of lorazepam. The doctor ordered 0.05 mg/kg, so 0.05 mg/kg × 62.73 kg (138 lb ÷ 2.2 lb/kg) = 3.14 mg.

Step 2: Calculate the volume of lorazepam injection to administer. The available lorazepam injection is 2 mg/mL, so 3.14 mg ÷ 2 mg/mL = 1.57 mL. The nurse should administer 1.57 mL of lorazepam injection.

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Correct Answer is C

Explanation

Choice A rationale:

The label states to add 3.5 mL of diluent for reconstitution, not 5 mL. So, choice A is incorrect.

Choice B rationale:

After reconstitution, the vial will contain 1 gram of medication, not 500 mg. So, choice B is incorrect.

Choice C rationale:

The label does state to use the solution within 1 hour of reconstitution. So, choice C is correct.

Choice D rationale:

The label states the medication can be used for IM or IV, not only IM. So, choice D is incorrect.

So, the correct answer is C. Administer the medication within 1 hr of reconstitution.

A. The medication should be stored in a well-lit area. B. The medication should be stored in a cool area. C. The total volume in a unit dose container is 100 mL. D. The unit dose container should be gently rolled before administration.

Correct Answer is D

Explanation

Choice A rationale

Storing the medication in a well-lit area is not necessary. Phenytoin oral suspension does not require light for storage.

Choice B rationale

While it’s important to store many medications in a cool area, phenytoin oral suspension does not specifically need to be stored in a cool area.

Choice C rationale

The total volume in a unit dose container is not typically 100 mL for phenytoin oral suspension. The volume can vary depending on the concentration and the specific product.

Choice D rationale

The unit dose container should indeed be gently rolled before administration. This is because phenytoin is an oral suspension, and suspensions consist of small drug particles dispersed throughout a liquid. Rolling the container helps ensure the drug particles are evenly distributed throughout the dose.

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A nurse is preparing to administer lorazepam 0.05 mg/kg IM 2 hr prior to surgery to a client who weighs 138 lb. If the available lorazepam injection is 2 mg/mL, how many mL should the nurse administer? .

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Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

A nurse is planning to instruct a caregiver on the use of phenytoin oral suspension. What information should the nurse include in the instruction?

Correct Answer is D

Explanation

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A nurse is preparing to administer lorazepam 0.05 mg/kg IM 2 hr prior to surgery to a client who weighs 138 lb. If the available lorazepam injection is 2 mg/mL, how many mL should the nurse administer? .