A nurse is preparing to administer lidocaine via continuous IV infusion at 4 mg/min. Available is lidocaine 2 g dextrose 5% in water 500 mL. The nurse should set the IV pump to deliver how many mL/hr?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["60"]
Step 1: Determine the Lidocaine Concentration
- The solution contains 2 grams (2000 mg) of lidocaine in 500 mL.
- To find the amount of lidocaine per mL:
2000 mg ÷ 500 mL = 4 mg/mL
Step 2: Calculate the Total Dose per Hour
- The prescribed infusion rate is 4 mg per minute.
- In 1 hour (60 minutes), the total dose is:
4 mg/min × 60 min = 240 mg/hr
Step 3: Determine the Infusion Rate in mL/hr
- Since each mL contains 4 mg of lidocaine:
240 mg ÷ 4 mg/mL = 60 mL/hr
The nurse should set the IV pump to 60 mL/hr for the continuous IV infusion of lidocaine at a rate of 4 mg/min.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A Reason:
Identify the client using two identifiers is correct. Prior to administering any medication, especially controlled substances, it's crucial to confirm the client's identity using two unique identifiers, such as their name and date of birth or an identification band and verbal confirmation. Ensuring accurate identification helps prevent medication errors and ensures the right medication is given to the right patient.
Choice B Reason:
Compare the amount of medication available to the inventory record is incorrect. This is part of maintaining accurate documentation and inventory control, ensuring that the amount of medication matches the recorded inventory. However, it typically occurs after confirming the client's identity.
Choice C Reason:
Document the administration of the medication is incorrect. Documentation of medication administration is crucial for legal and medical purposes but should occur after the medication has been safely administered to the correct patient.
Choice D Reason:
Remove the medication from the medication dispensing cabinet is incorrect. Retrieving the medication from the dispensing cabinet is an essential step in the administration process, but it should occur after confirming the client's identity to ensure the right medication is administered to the right individual.
Correct Answer is C
Explanation
Choice A Reason:
Levothyroxine 100 mcg PO every morning is incorrect. Indicates the dosage (100 mcg) and the route (by mouth) to be taken every morning.
Choice B Reason:
Simvastatin 40 mg PO at bedtime: Specifies the dosage (40 mg) and the timing (at bedtime) for administration.
Choice C Reason:
Acetaminophen 500 mg every 4 hr RN for fever is correct. The term "RN" in this context might be interpreted as "right now" rather than the intended meaning, which could cause confusion regarding the frequency of acetaminophen administration. The nurse should seek clarification to ensure accurate and safe dosing instructions.
Choice D Reason:
Morphine 4 mg IV every 4 hr PRN for pain: Specifies the dosage (4 mg), the route (intravenous), and the frequency (every 4 hours as needed) for pain management.
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