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 B
Explanation
This is the finding that the PN should document as evidence that the amount of insulin is inadequate for the client with type 1 diabetes mellitus. Consecutive evening serum glucose greater than 260 mg/dL indicates hyperglycemia, which means that the client's blood sugar is too high and not well controlled by the insulin dose. The PN should report this finding to the healthcare provider and expect a possible adjustment in the insulin regimen.
Correct Answer is D
Explanation
- A playpen is a portable enclosure that provides a confined space for a child to play in. It can be useful for keeping a child safe and supervised when the caregiver is busy or needs a break, but it should not be used as a substitute for active play or interaction with the caregiver or others.
- A 2-year-old child is in the developmental stage of toddlerhood, which is characterized by rapid physical, cognitive, social, and emotional growth. Toddlers are curious and eager to learn about the world around them, and they need opportunities to explore, experiment, and manipulate objects and materials. They also need stimulation, guidance, and feedback from their caregivers and peers to develop their language, problem-solving, and social skills.
- Keeping a 2-year-old child in a playpen for long periods of time or to prevent them from getting dirty can have negative effects on their development and well-being. It can limit their physical activity, creativity, and independence, and it can cause boredom, frustration, or resentment . It can also interfere with their attachment and bonding with their caregiver, as well as their self-esteem and self-image.
- Therefore, the practical nurse (PN) should use the statement "Children need time to actively explore their environment" in responding to this concern about using a playpen. This statement reflects the developmental needs and rights of the child, and it encourages the caregiver to provide a more stimulating and supportive environment for the child. It also implies that getting dirty is not a problem, but rather a natural and healthy part of play and learning.
- Therefore, option D is the correct answer, while options A, B, and C are incorrect. Option A is incorrect because it is judgmental and may offend or discourage the caregiver.
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