The practical nurse (PN) is preparing cefazolin 400 mg IM for a client with a gram-positive infection. The available vial is labeled, "Cefazolin 1 gram," and the instructions for reconstitution state, for IM use, add 2 mL sterile water for injection. Total volume after reconstitution is 2.5 mL. After reconstitution, how many mL should be administered to the client? (Enter numeric value only. If rounding is required, round to the whole number, nearest tenths/hundredth).
The Correct Answer is ["1"]
This is the correct answer because the concentration of cefazolin after reconstitution is 1 gram/2.5 mL, which is equivalent to 400 mg/1 mL. Therefore, to administer 400 mg of cefazolin, the PN should draw up 1 mL of the reconstituted solution. This can be calculated using the formula:
Desired dose / Available dose = Volume to administer
400 mg / 1000 mg = x mL / 2.5 mL
x = (400 x 2.5) / 1000
x = 1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
The statement, "This medication will shorten the duration of my symptoms," is correct. Oseltamivir is an antiviral medication used to treat influenza, and it can reduce the duration of symptoms when taken early in the course of the illness.
Choice B rationale:
The statement, "This medication will prevent me from spreading the virus to others," is incorrect. While oseltamivir can help reduce the severity and duration of symptoms, it does not prevent the spread of the virus to others. Clients with influenza should still take precautions to avoid transmitting the virus to others.
Choice C rationale:
The statement, "This medication will work best if I start taking it within 48 hours of symptom onset," is correct. Oseltamivir is most effective when started within 48 hours of the onset of symptoms.
Choice D rationale:
The statement, "This medication may cause nausea and vomiting as side effects," is correct. Nausea and vomiting are potential side effects of oseltamivir, and clients should be informed about these possible adverse reactions.
Correct Answer is A
No explanation
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