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A nurse is preparing to reconstitute ampicillin for IM administration to a client who has urethritis.

**Which of the following information should the nurse interpret from the medication label? (Refer to the medication label below.). *This vial contains ampicillin sodium equivalent to 1 gram ampicillin.

For IM use, add 3.5 ml diluent (read accompanying insert). Resulting solution contains 250 mg ampicillin per mL. Use solution within 1 hour.

Usage dosage: Adults-250 to 500 mg IM qóh. READ ACCOMPANYING INSERT.

T tor. detailed indications, IM or IV dosage, and precautions.

Store the dry powder at 20° to 25° C (68° to 77° F) (See USP]). NDC 1234-1234-10. Ampicillin for Injection, UŠP. 1 gram per vial.

For IM or IV Use.

End of label.**

Instill 5 mL of diluent to the vial for reconstitution.

After reconstitution, the vial will contain a total of 500 mg of medication.

Administer the medication within 1 hr of reconstitution.

This medication can only be administered IM. .

Answer and Explanation

The Correct Answer is C

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.

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Correct Answer is ["2 mL"]

Explanation

Step 1 is to find out how many mg are in 1 mL after reconstitution. This is done by dividing the total amount of mg available (1000 mg) by the total volume in mL after reconstitution (3.4 mL). So, 1000 mg ÷ 3.4 mL = 294.12 mg/mL. Step 2 is to find out how many mL are needed to get 500 mg. This is done by dividing the required amount in mg (500 mg) by the concentration in mg/mL (294.12 mg/mL). So, 500 mg ÷ 294.12 mg/mL = 1.7 mL. So the correct answer is 2 mL (rounded to the nearest whole number).

Correct Answer is ["& mL"]

Explanation

Step 1 is to convert the client’s weight from pounds to kilograms since the dosage is ordered in units/kg. There are approximately 2.2 lb/kg, so 130 lb ÷ 2.2 lb/kg = 59.1 kg. The doctor ordered calcitonin at a dosage of & units/kg, so we multiply the client’s weight in kg by the dosage: 59.1 kg × & units/kg = & units. The medication is available at a concentration of 200 units/mL, so we divide the total units needed by the units per mL: & units ÷ 200 units/mL = & mL.

So, the correct answer is & mL.

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Naxlex Comprehensive Predictor Exams

Correct Answer is ["2 mL"]

Explanation

A nurse is preparing to administer calcitonin & units/kg IM to a client who weighs 130 lb. Available is calcitonin 200 units/mL for injection. 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.). mL.

Correct Answer is ["& mL"]

Explanation

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