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","D","E","F"]
Explanation
Choice A rationale:
Increased temperature alone is not a sufficient indication for pain medication in a post-pyloromyotomy infant. Fever can have various causes, and pain should be assessed based on other factors.
Choice B rationale:
Increased pulse rate can be an indication of pain in an infant following surgery like pyloromyotomy. It's important to assess the overall clinical picture and consider pain management if other signs are present.
Choice C rationale:
Increased respiratory rate alone is not a specific indicator of pain in a post-pyloromyotomy infant. Respiratory rate can vary for many reasons, so it should not be the sole criterion for pain management.
Choice D rationale:
Increased pulse rate is a potential sign of pain in a post-pyloromyotomy infant and should be considered when assessing the need for pain medication.
Choice E rationale:
Restlessness is often a sign of discomfort or pain in infants. Restlessness, along with other clinical indicators, can guide the decision to administer pain medication.
Choice F rationale:
Clenched fists can be a sign of discomfort or pain in infants, and it should be considered when assessing the need for pain management.
Correct Answer is A
Explanation
The correct answer is Choice A.
Choice A rationale: In emergencies where immediate surgery is required to save a life, implied consent is assumed if the patient is unresponsive and no family is available. Ethical and legal guidelines allow proceeding without signed consent to avoid delays that could be life-threatening.
Choice B rationale: A close friend typically does not have legal authority to provide informed consent for medical procedures unless they have been designated as a healthcare proxy. Therefore, this action would not be legally appropriate in this situation.
Choice C rationale: Seeking an emergency court order for surgery could cause delays that are detrimental to the patient's health. In life-threatening situations, implied consent is sufficient, and prompt action is necessary to save the patient's life.
Choice D rationale: Continuing to provide life support without proceeding with surgery may not be sufficient to address the life-threatening condition. Immediate surgical intervention is necessary, and implied consent allows this to be done without waiting for a guardian.
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