A nurse is caring for a client who has status epilepticus. The provider prescribes phenobarbital 400 mg IV bolus stat, then 200 mg IV bolus every 20 min until seizure activity stops, maximum 2 g. Available is phenobarbital injection 130 mg/mL. How many mL should the nurse administer per dose after the initial 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 ["1.5"]

To calculate the amount of phenobarbital injection needed for each dose after the initial dose, we need to divide the prescribed dose (200 mg) by the concentration of the injection (130 mg/mL). This gives us:

200 mg / 130 mg/mL = 1.538 mL

To round this to the nearest tenth, we look at the hundredths place and see that it is 3, which is less than 5, so we round down and drop the rest of the digits. This gives us:

1.5 mL

Therefore, the nurse should administer 1.5 mL of phenobarbital injection per dose after the initial dose.

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Correct Answer is A

Explanation

Choice A rationale: The medication can be used for IV administration or IM administration as indicated in the label. Methylprednisolone is a corticosteroid that can be given intravenously to treat inflammatory conditions such as asthma, allergic reactions, rheumatoid arthritis, and multiple sclerosis. The medication label should indicate the route of administration, the concentration, the expiration date, and the storage conditions.

Choice B rationale: According to the label, the medication should not be used for more than 48 hours after reconstitution, and it should be stored in a refrigerator.

Choice C rationale: The vial contains multiple doses, and each dose should be withdrawn with a sterile syringe.

Choice D rationale: The medication should be reconstituted with bacteriostatic water for injection, not with 0.9% sodium chloride.

Correct Answer is ["375"]

Explanation

To answer this question, you need to use the formula: rate (mL/hr) = volume (mL) / time (hr). Plug in the given values and you get: rate = 750 / 2.

Simplify and you get: rate = 375.

Therefore, the nurse should set the IV pump to deliver 375 mL/hr.

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer methylprednisolone. Which of the following information should the nurse identify as correct according to the medication label?

Correct Answer is A

Explanation

A nurse is preparing to administer 0.9% sodium chloride 750 mL IV to infuse over 2 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["375"]

Explanation

A nurse is preparing to administer vancomycin 1 g in 250 ml 0.9% sodium chloride by intermittent IV bolus over 90 min. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

A nurse is preparing to administer methylprednisolone 30 mg/kg via IV bolus to a client who weighs 184 lb. Available is methylprednisolone 125 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

A nurse is preparing to administer enoxaparin 1 mg/kg subcutaneous to a client who weighs 165 lb. Available is enoxaparin 30 mg/0.3 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.)

A nurse is preparing to administer filgrastim 250 mcg subcutaneous. How many mg should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

A nurse is preparing to administer milrinone 50 mcg/kg IV loading dose to a client who weighs 154 lb. Available is milrinone 1 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)