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 A
Explanation
A. Washing the hair and skin daily with mild soap and warm water helps remove excess oil, dirt, and bacteria that can contribute to acne formation. Gentle cleansing is an appropriate first-line recommendation for adolescents with mild acne.
B. Eliminating specific foods such as chocolate or fried foods is not consistently supported by evidence as a primary treatment for acne. Diet may influence some individuals, but routine restriction of these foods is not a standard initial recommendation.
C. Squeezing or expressing blackheads can traumatize the skin, increase inflammation, and lead to scarring or infection. Harsh exfoliation may further irritate the skin and worsen acne.
D. Referral to a dermatologist may be necessary for severe or persistent acne. However, initial management for mild acne typically includes proper skin hygiene and over-the-counter measures before pursuing long-term prescription therapy.
Correct Answer is B
Explanation
The patient experienced a sudden guard while being assisted to the bathroom, which led to their hospitalization. The most appropriate action for the practical nurse (PN) in this situation is to prioritize the patient's safety and well-being. Returning the patient to bed and maintaining bed rest allows for stability and minimizes the risk of further complications or injury. By providing a safe and controlled environment, the PN can monitor the patient's condition and collaborate with the healthcare team to determine the appropriate course of action moving forward.
Options a), c), and d) are not relevant or appropriate in this context.
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