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. .
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2"]
Explanation
Step 1 is to determine the amount of medication in 1 mL after reconstitution. This is calculated by dividing the total available medication (1000 mg) by the total volume after reconstitution (3.4 mL):
1000 mg ÷ 3.4 mL = 294.12 mg/mL
Step 2 is to determine how many mL are needed to obtain 500 mg. This is done by dividing the required dose (500 mg) by the concentration (294.12 mg/mL):
500 mg ÷ 294.12 mg/mL = 1.7 mL
Rounding to the nearest whole number, the correct amount to administer is 2 mL.
Correct Answer is ["2.4"]
Explanation
Calculation:
-
Convert the client’s weight from pounds to kilograms
Weight = 130 ÷ 2.2
≈ 59 kg
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Calculate the ordered dose in units
Ordered Dose = 8 × 59
Ordered Dose = 472 units
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Identify the available concentration
Available Concentration: 200 units/mL
-
Calculate the volume to administer
Volume to administer = Ordered Dose ÷ Concentration
Volume to administer = 472 ÷ 200
Volume to administer = 2.36 mL
-
Round to the nearest tenth
= 2.4 mL
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