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. The 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"]
The concentration of cefazolin after reconstitution can be calculated as follows: Concentration = Total amount of drug / Total volume after reconstitution
Since the available vial contains 1 gram (1000 mg) of cefazolin and the total volume after reconstitution is 2.5 mL, we can calculate the concentration:
Concentration = 1000 mg / 2.5 mL = 400 mg/mL
Therefore, after reconstitution, the concentration of cefazolin is 400 mg/mL.
To administer a dose of 400 mg, we divide the desired dose by the concentration: Volume to administer = Desired dose / Concentration
Volume to administer = 400 mg / 400 mg/mL = 1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
This is the action that the PN should implement for a male client who has just been told he has cancer and asks to be left alone. Leaving the room after offering to return later respects the client's autonomy and privacy, while also showing empathy and availability. The client may need some time and space to process the diagnosis and cope with his emotions. The PN should not force the client to talk or stay with him if he does not want to, but should also not abandon him or ignore his needs.
Correct Answer is A
Explanation
A. "Are you planning to obey the voices?" – This question is crucial as it assesses the immediate risk of harm to the client or others. Determining if the client intends to follow commands from hallucinations provides insight into potential danger, ensuring safety is prioritized.
B. "Have you taken any hallucinogens?" – While drug use can contribute to hallucinations, asking about substance use is less urgent than assessing potential harm from the voices. Immediate safety takes precedence over exploring potential causes at this stage.
C. "When did these voices begin?" – Knowing when the symptoms started is relevant for understanding the history of the hallucinations but is secondary to determining if the client intends to act on any commands from the voices, as safety is the first priority.
D. "Do you believe the voices are real?" – This question helps assess the client’s insight into the hallucinations but is not as critical as assessing the immediate risk of harm by determining if the client plans to follow any commands from the voices.
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