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","C","E"]
Explanation
The practical nurse (PN) should provide the following instructions to the unlicensed assistive personnel (UAP) for cleaning the hearing aid of an older adult resident:
A- Keep the battery door closed during storage: his is incorrect because the battery door should be kept open when the hearing aid is not in use. Keeping it open helps prevent moisture buildup inside the device.
B- Remove ear wax from the device's surface: Earwax accumulation can affect the performance of the hearing aid. Instructing the UAP to clean the device's surface and remove any visible ear wax will help maintain optimal functioning.
C- Verify that the device is labeled with the client's identification: Labeling the device with the client's identification is crucial to ensure that it is returned to the correct person. This step helps prevent mix-ups or misplacements of hearing aids among residents.
D- This is not appropriate as it can expose the device to heat and sunlight, which could damage it.
E- Observe and report any ear drainage after removing the device: After removing the hearing aid, the UAP should observe the client's ears for any signs of drainage or abnormal discharge. If ear drainage is noticed, it should be reported to the PN or appropriate healthcare provider for further assessment and management.
Correct Answer is B
Explanation
Hypoglycemia occurs when blood glucose levels drop below normal levels. It is commonly associated with diabetes mellitus and can result from various factors such as excessive insulin or oral hypoglycemic medication, delayed or missed meals, increased physical activity, or alcohol consumption.
Tremors, or shaking hands, are one of the early signs of hypoglycemia. They can occur due to the brain's response to low blood glucose levels. Other early signs of hypoglycemia may include sweating, palpitations, anxiety, hunger, and weakness.
A. Polyuria, or excessive urination, is not typically associated with hypoglycemia. It is more commonly seen in conditions such as hyperglycemia or diabetes insipidus.
C. Bradycardia, or a slow heart rate, is not a characteristic sign of hypoglycemia. It can occur in some cases of severe hypoglycemia, but it is not an early sign.
D. Difficulty swallowing is not directly related to hypoglycemia. It may be caused by other factors such as neurological or muscular conditions, esophageal disorders, or structural abnormalities in the throat or esophagus.
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