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
Explanation
When a client expresses fear and uncertainty about undergoing surgery, it is important for the practical nurse (PN) to communicate this information to the charge nurse or the healthcare provider. By notifying the appropriate person, the PN ensures that the client's concerns are addressed and appropriate interventions can be implemented.
Options a) and c) are not the priority actions because documenting the client's concerns or reminding them about the signed consent does not address their emotional needs or provide support.
Option b) may not be the most appropriate response, as simply encouraging the client to continue with the scheduled surgery without addressing their fears and uncertainties may not be sufficient to alleviate their anxiety.
Therefore, the best course of action is to notify the charge nurse or healthcare provider so that they can assess the client's concerns, provide reassurance, and address any questions or fears the client may have prior to the surgery.
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.
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