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","E"]
Explanation
Correct:
B- Making these changes will also help me avoid other chronic health conditions. This statement indicates an understanding because the client recognizes that the lifestyle changes discussed will not only help prevent or manage diabetes but also have a positive impact on other chronic health conditions such as cardiovascular disease and obesity.
E- If I have symptoms like increased thirst and urination, I should come in and get my blood sugar checked. This statement indicates an understanding because the client acknowledges the importance of monitoring their blood sugar levels if they experience symptoms commonly associated with diabetes, such as increased thirst and urination.
Incorrect choices:
A- If my fasting blood sugar is less than 100 next time, I can go back to my usual eating habits. This statement indicates a misunderstanding. It suggests that as long as the client's fasting blood sugar is below 100, they can resume their previous eating habits, which is not accurate. It's important to emphasize that long-term lifestyle changes are necessary, regardless of individual blood sugar readings.
C- I can never eat sugar again. This statement indicates a misunderstanding. While it's important to minimize the consumption of sugary foods and beverages, it's not necessary to completely eliminate all sugar from the diet. Moderation and mindful consumption are key.
D- If I make the changes we talked about, I will not get type 2 diabetes. This statement indicates a misunderstanding. While making positive lifestyle changes can significantly reduce the risk of developing type 2 diabetes, it does not guarantee complete prevention. Genetic and other factors can still influence an individual's susceptibility to the condition.
Correct Answer is A
Explanation
Collecting fingerstick glucose levels is the most important intervention for the PN to implement for a client who is receiving TPN. TPN is a method of feeding that bypasses the gastrointestinal tract and provides all the nutritional needs of the body through a vein. TPN contains a high concentration of glucose, which can cause hyperglycemia or fluctuations in blood sugar levels. Therefore, it is essential to monitor the client's glucose levels frequently and adjust the infusion rate or insulin administration accordingly.
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