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","C","D"]
Explanation
A. "I don't need to go to the hospital if I have another seizure unless it is a very long seizure or if I have several in a row." This statement demonstrates an understanding that certain characteristics of seizures, such as prolonged duration or multiple seizures in succession, may require medical attention and evaluation.
C. "I may never know why I started having seizures." This statement acknowledges the possibility that the underlying cause of the seizures may remain unknown. Seizure etiology can vary, and in some cases, the specific cause cannot be determined despite diagnostic tests.
D. "Having a medic alert bracelet might be a good idea, but it is up to me to decide if I want it or not." This statement recognizes the potential benefits of wearing a medic alert bracelet, which can provide crucial information about the client's condition in case of emergencies. It emphasizes the client's autonomy in making the decision, showing an understanding of the role and significance of the bracelet.
The following statement does not indicate understanding:
"There are really no lifestyle changes that I can do that will affect my risk of having another seizure." This statement is incorrect, as there are lifestyle modifications that can help reduce the risk of seizures, such as getting enough sleep, managing stress, avoiding triggers (if known), and taking prescribed medications as directed.
Regarding the statement "I can stop taking the phenytoin if I go for a while and don't have a seizure," it is not included in the given options.
Correct Answer is C
Explanation
Croup is a viral infection that affects the upper airways, causing inflammation and narrowing of the air passages. In severe cases, it can lead to respiratory distress, including increased work of breathing and decreased oxygen saturation levels. Monitoring the child's oxygen saturation level using a pulse oximeter is an essential intervention to assess the severity of respiratory distress and the need for further interventions.
A. Encouraging the child to drink cool, clear liquids can help soothe the throat and prevent dehydration.
B. Instructing the mother to play with the child for stimulation and distraction can help provide comfort and alleviate anxiety.
D. Administering acetaminophen as needed (PRN) can help reduce fever and discomfort. However, none of these interventions directly address the potential respiratory distress and the need for oxygenation assessment.
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