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:
Granulating tissue in a foot ulcer is a positive sign of wound healing, but it may not be directly related to the effectiveness of pregabalin in treating diabetic peripheral neuropathy. The primary goal of pregabalin in this context is to reduce pain and neuropathic symptoms.
Choice B rationale:
A reduced level of pain is the most relevant indicator of the effectiveness of pregabalin in treating diabetic peripheral neuropathy. Pregabalin is an antiepileptic medication used to manage neuropathic pain. A decrease in pain indicates that the medication is effectively managing the client's symptoms.
Choice C rationale:
Improved visual acuity is not directly related to the effectiveness of pregabalin in treating diabetic peripheral neuropathy. Pregabalin primarily targets neuropathic pain and sensory symptoms, not visual function.
Choice D rationale:
A full volume of pedal pulses is a positive sign of adequate circulation in the lower extremities, but it may not be directly related to the effectiveness of pregabalin in treating neuropathy symptoms. The primary goal of pregabalin in this context is pain management.
Correct Answer is A
Explanation
Choice A rationale:
Encouraging the client to face their fear gradually is an appropriate nursing intervention for a client with a phobia. This approach is consistent with exposure therapy, which is a widely recognized and effective treatment for phobias. Exposure therapy involves gradually exposing the client to the feared object or situation in a controlled and supportive environment. By doing so, the client can learn to confront and manage their fear over time. This approach is evidence-based and helps the client build resilience and reduce anxiety.
Choice B rationale:
Administering benzodiazepines as needed for acute anxiety (Choice B) is not the first-line treatment for phobias. While benzodiazepines can provide temporary relief from anxiety symptoms, they do not address the underlying phobia and can lead to dependence and tolerance with prolonged use. Moreover, they are generally reserved for acute anxiety episodes and not considered a primary treatment for phobias.
Choice C rationale:
Providing psychoeducation about the causes and effects of phobias (Choice C) is a valuable component of treatment, but it alone may not be sufficient. Psychoeducation can help clients understand the nature of their phobia and reduce stigma, but it should be combined with evidence-based therapies like exposure therapy for comprehensive care.
Choice D rationale:
Teaching the client relaxation techniques to manage anxiety (Choice D) can be a helpful adjunct to treatment, but it is not the primary intervention for phobias. Relaxation techniques can be part of a broader strategy to reduce anxiety, but the client also needs exposure therapy or cognitive-behavioral therapy to address the phobia directly.
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