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 D
Explanation
Choice A rationale:
Providing information about the client's healthcare power of attorney is not the most critical piece of information to report in this situation. The immediate concern is the client's change in mental status and potential medical emergency.
Choice B rationale:
While the reason for the client's admission is important background information, it is not the most urgent information to report in this situation. The priority is addressing the client's acute change in mental status.
Choice C rationale:
The nurse should be aware of the client's currently prescribed medications, but this information does not take precedence over the client's sudden onset of confusion and agitation. Immediate action is needed to address the client's altered mental status.
Choice D rationale:
Increasing confusion and agitation in a client who recently underwent ORIF of the right femur is a significant change in condition and may indicate a medical emergency such as infection, delirium, or other complications. This information should be provided first to alert the healthcare provider to the client's immediate needs.
Correct Answer is D
Explanation
Choice A rationale:
Concerns about parenting. While concerns about parenting are important to address during prenatal care, the initial visit focuses on gathering essential information and providing education related to pregnancy and childbirth. Knowledge about labor and delivery is crucial for the client to understand the process and make informed decisions.
Choice B rationale:
Cultural practices related to childbearing. Cultural practices related to childbearing are also essential topics to discuss during prenatal care, but they may not be the highest priority at the initial visit. Understanding the client's cultural background and beliefs is important, but providing information about pregnancy and childbirth should take precedence during the first prenatal visit.
Choice C rationale:
Complications associated with childbirth. Discussing complications associated with childbirth is important, but it may be overwhelming for a client during the initial prenatal visit. The primary focus should be on providing basic information and addressing immediate questions and concerns, with more in-depth discussions about complications occurring in subsequent visits.
Choice D rationale:
Knowledge about labor and delivery. This is the correct choice because the initial prenatal visit should include education about pregnancy, labor, and delivery. Providing the client with essential knowledge about what to expect during labor and delivery empowers her to make informed decisions and plan for her childbirth experience.
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