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. The 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"]
The concentration of cefazolin after reconstitution can be calculated as follows: Concentration = Total amount of drug / Total volume after reconstitution
Since the available vial contains 1 gram (1000 mg) of cefazolin and the total volume after reconstitution is 2.5 mL, we can calculate the concentration:
Concentration = 1000 mg / 2.5 mL = 400 mg/mL
Therefore, after reconstitution, the concentration of cefazolin is 400 mg/mL.
To administer a dose of 400 mg, we divide the desired dose by the concentration: Volume to administer = Desired dose / Concentration
Volume to administer = 400 mg / 400 mg/mL = 1 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D, C, A, B
Explanation
- A 12-year-old child with a history of asthma is wheezing and complaining of shortness of breath. Wheezing and shortness of breath indicate respiratory distress, which can be a medical emergency for a child with asthma. Prompt intervention and assessment of the child's respiratory status are crucial.
- A 7-year-old child who has type 1 diabetes mellitus is experiencing extreme hunger and shakiness. These symptoms may indicate hypoglycemia, which requires immediate attention to prevent further complications. The PN should assess the child's blood glucose levels and provide appropriate treatment.
- A 10-year-old child with bleeding lacerations on both knees after falling on the playground. While bleeding lacerations require attention, they are not immediately life-threatening or likely to cause severe complications. However, the PN should still address this child's injuries promptly and provide appropriate wound care.
- A 5-year-old child is crying uncontrollably because of an incontinent bowel episode. While the child's distress is significant, it does not indicate an immediate life-threatening condition or urgent medical need. The PN should provide comfort, and reassurance, and assist with appropriate hygiene measures for the child.
Prioritizing care in this order ensures that the most urgent and potentially life-threatening conditions are addressed first, followed by those requiring immediate attention but with a lower risk of complications. Finally, the PN can attend to the client with a condition that, while distressing, is not immediately life-threatening or urgent.
Correct Answer is ["A","B","D"]
Explanation
The correct answer is: a. Paper tape, b. Small gauze pad, and d. Exam gloves.
Choice A: Paper tape
Reason: Paper tape is used to secure the gauze pad over the site after the saline lock is removed. It is gentle on the skin and helps to keep the gauze in place, preventing any bleeding or infection at the site.
Choice B: Small gauze pad
Reason: A small gauze pad is essential to apply pressure to the site after the saline lock is removed. This helps to stop any bleeding and provides a clean, sterile covering for the site.
Choice C: Sterile gloves
Reason: Sterile gloves are not necessary for this procedure. Exam gloves are sufficient to maintain cleanliness and prevent infection during the removal of the saline lock.
Choice D: Exam gloves
Reason: Exam gloves are used to maintain hygiene and prevent infection during the procedure. They provide adequate protection for both the nurse and the patient.
Choice E: Three mL syringe
Reason: A three mL syringe is not required for the removal of a saline lock. Syringes are typically used for flushing the saline lock, not for its removal.
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