A nurse is preparing to administer lidocaine 50 mg IV bolus. Available is lidocaine 200 mg/mL. How many mL should the nurse administer (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.3"]
Calculating the Lidocaine Dose
Problem: Administer 50 mg of lidocaine IV bolus. The available concentration is 200 mg/mL.
Steps:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (50 mg) and the concentration of the medication (200 mg/mL).
Proportion:
x mL / 50 mg = 1 mL / 200 mg
Cross-multiply:
200x = 50
Solve for x:
x = 50 / 200
x = 0.25
Answer: The nurse should administer 0.3 mL of lidocaine per dose(rounded to the nearest tenth).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) The client wears fitted slippers:
Fitted slippers generally provide good support and are less likely to contribute to falls compared to loose or ill-fitting footwear. Therefore, this finding is less likely to be a major contributor to the client’s falls.
B) The client takes alprazolam:
Alprazolam is a benzodiazepine that can cause sedation, dizziness, and impaired coordination. These side effects can significantly increase the risk of falls, especially in older adults. Thus, this medication is a likely contributor to the client's falls.
C) The client has a nonslip bath mat in his shower:
A nonslip bath mat is a safety measure designed to prevent falls in the shower. Its presence suggests a proactive approach to reducing fall risk, so it is less likely to be contributing to the problem.
D) The client uses a raised toilet seat:
A raised toilet seat can be a helpful adaptation for individuals with mobility issues, making it easier to sit down and stand up. It is generally not associated with an increased risk of falls, so this finding is unlikely to be contributing to the client’s falls.
Correct Answer is ["0.3"]
Explanation
Calculating the Lidocaine Dose
Problem: Administer 50 mg of lidocaine IV bolus. The available concentration is 200 mg/mL.
Steps:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (50 mg) and the concentration of the medication (200 mg/mL).
Proportion:
x mL / 50 mg = 1 mL / 200 mg
Cross-multiply:
200x = 50
Solve for x:
x = 50 / 200
x = 0.25
Answer: The nurse should administer 0.3 mL of lidocaine per dose(rounded to the nearest tenth).
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