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 C
Explanation
This is the action that the PN should take if they believe that a prescription for a child is incorrect because the dosage prescribed is the usual adult dosage. Calling the healthcare provider and clarifying the prescription is the safest and most effective way to prevent medication errors and ensure the child's safety. The PN should not administer the medication until they are sure that it is correct and appropriate for the child.
Correct Answer is C
Explanation
The client is prescribed oxygen at 3 liters per minute, but the flowmeter shows that only 1 liter of oxygen is being delivered. This indicates an inadequate oxygen supply and immediate action is required to adjust the flow rate to meet the prescribed oxygen requirement. Failure to provide the appropriate oxygen flow rate can compromise the client's respiratory status and oxygenation. The PN should promptly increase the flow rate to the prescribed level to ensure the client receives the necessary oxygen therapy.
The other assessment findings mentioned are also important to note and address, but they do not require immediate action:
A. The client lying in a supine position in bed: While it is generally recommended for clients receiving oxygen therapy to be in an upright or semi-upright position, this finding does not require immediate action unless there are specific indications or contraindications related to the client's condition.
B. The cannula pressed snugly against the client's cheeks: The cannula should fit comfortably and securely on the client's face without causing discomfort or pressure areas. While this finding may require adjustment to ensure proper fit and comfort, it does not require immediate action unless it is causing harm or compromising oxygen delivery.
D. There is no humidifier attached to the delivery system: While a humidifier may be recommended to add moisture to the oxygen, its absence does not pose an immediate threat to the client's safety or require immediate action. The need for humidification depends on the client's condition and comfort level, and it can be addressed by attaching a humidifier if necessary.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today