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 correct answer because it is the best way to assess for signs of ototoxicity, which is a potential adverse effect of aminoglycosides. Ototoxicity is the damage or injury to the inner ear or auditory nerve caused by certain drugs or chemicals. It can result in hearing loss, tinnitus, vertigo, or balance problems. Aminoglycosides are a class of antibiotics that are effective against gram-negative bacteria, but they can also cause ototoxicity by interfering with the function of the hair cells in the cochlea.
The practical nurse (PN) should monitor the client's hearing by asking about any changes in hearing acuity, ringing in the ears, or difficulty understanding speech. The PN should also perform a hearing test using a tuning fork or an audiometer if available. The PN should report any signs of ototoxicity to the healthcare provider and discontinue the aminoglycoside as ordered.
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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