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 ["A","B","C","E"]
Explanation
Choice A rationale:
The nurse should consider the patient's physical abilities and limitations when planning recreational activities because this information is crucial for ensuring the safety and appropriateness of the activities. For example, a patient with limited mobility may benefit from activities that can be done in a seated position, while a patient with greater physical abilities may be able to engage in more active pursuits.
Choice B rationale:
The patient's cognitive abilities and limitations should also be taken into account when planning activities. Some patients may have cognitive impairments that require simpler, more straightforward activities, while others may be able to participate in more complex or intellectually stimulating options. This ensures that the activities are enjoyable and suitable for the individual's cognitive capacity.
Choice C rationale:
Considering the patient's interests and preferences is essential to make the recreational activities meaningful and enjoyable. It is important to involve patients in activities they find interesting and pleasurable, as this can have a positive impact on their emotional and psychological well-being during the rehabilitation process.
Choice E rationale:
The patient's cultural and religious background is an important consideration when planning activities. Some activities may be more or less acceptable to individuals from different cultural or religious backgrounds. It's essential to respect cultural and religious preferences to ensure that the activities do not cause discomfort or offense to the patients.
Choice D rationale:
The patient's age and gender are not the primary factors to consider when selecting appropriate activities for individuals in a rehabilitation and restorative care setting. Age and gender do not necessarily determine a person's interests, physical abilities, or cognitive limitations. Therefore, they are not as relevant as the other factors listed in this context.
Correct Answer is B
Explanation
Choice A rationale:
Increasing the supplemental oxygen to 15 L/min via nasal cannula may seem like a logical step given the client’s low oxygen saturation. However, it’s important to note that oxygen therapy should be titrated carefully. Too much oxygen can lead to oxygen toxicity, which can cause cellular damage and worsen the client’s condition. Therefore, this is not the priority action.
Choice B rationale:
Notifying the health care provider of the client’s condition is the priority action. The client’s oxygen saturation is 88% on room air, which is below the normal range of 95% to 100%. This indicates that the client is not getting enough oxygen, which can lead to hypoxia and other serious complications. The health care provider needs to be informed immediately so that appropriate interventions can be initiated.
Choice C rationale:
Administering ibuprofen as ordered for fever is important, but it’s not the priority in this situation. While fever can indicate an infection, which could be contributing to the client’s low oxygen saturation, addressing the immediate issue of hypoxia is more critical.
Choice D rationale:
Obtaining a sputum culture from the client could provide valuable information about the type of bacteria causing the pneumonia and guide antibiotic therapy. However, this is not an immediate priority compared to addressing the client’s low oxygen saturation. In summary, while all these actions are important in caring for a client with pneumonia, the nurse must prioritize interventions based on their urgency and potential impact on the client’s health status. In this case, notifying the health care provider of the client’s condition is the most critical action.
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