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:
An altered level of consciousness is not a typical finding in Alzheimer's disease. This condition is characterized by cognitive decline and memory impairment, but consciousness itself is not directly affected.
Choice B rationale:
Rapid mood swings can occur in individuals with Alzheimer's disease due to the changes in brain structure and function. These mood swings are a common behavioral symptom. However, the more distinctive hallmark of Alzheimer's disease is the cognitive decline rather than mood swings.
Choice C rationale:
Excessive motor activity is not a prominent feature of Alzheimer's disease. Instead, individuals with Alzheimer's disease often experience a decline in motor skills and coordination as the disease progresses.
Choice D rationale:
Failure to recognize familiar objects is a common symptom of Alzheimer's disease. This is referred to as agnosia, where individuals may struggle to recognize familiar people, objects, or places. It results from the progressive damage to brain regions responsible for memory and sensory processing.
Correct Answer is ["A","B","C","E"]
Explanation
Choice A rationale:
The client’s presentation of a noticeable facial droop and garbled speech are classic symptoms of a stroke. These symptoms indicate that the brain is not receiving enough oxygen, which can lead to permanent damage if not treated immediately. Therefore, this client requires immediate health interventions.
Choice B rationale:
This choice is identical to Choice A. The client’s noticeable facial droop and garbled speech are indicative of a stroke and require immediate attention.
Choice C rationale:
This choice is also identical to Choices A and B. The client’s symptoms are indicative of a stroke, which is a medical emergency that requires immediate intervention.
Choice D rationale:
While the change in the client’s speech after having a few drinks at a restaurant could be due to alcohol consumption, it could also be a symptom of a stroke, especially when combined with a facial droop. However, this choice does not directly indicate the need for immediate health interventions as it lacks the specificity of the symptoms compared to Choices A, B, and C.
Choice E rationale:
The time of arrival and mode of transportation do not directly indicate the need for immediate health interventions. However, the mention of facial drooping and garbled speech upon arrival at the emergency department reinforces the urgency of the situation, as these are classic symptoms of a stroke. In conclusion, Choices A, B, C, and E all highlight data that indicate the client is in need of immediate health interventions due to potential stroke symptoms. It’s important to note that strokes require immediate medical attention to minimize brain damage and potential complications. Normal ranges for lab parameters would not apply in this scenario as it’s based on clinical observations rather than laboratory findings.
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