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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.)

Answer and Explanation

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).

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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.

A. Cardiac output is reduced B. Systolic blood pressure is increased C. Apical heart rate is increased D. Urine output is reduced

Correct Answer is B

Explanation

A) Cardiac output is reduced:
Dopamine is used to improve cardiac output in conditions like left ventricular failure. A reduction in cardiac output would indicate that the medication is not having the desired therapeutic effect.

B) Systolic blood pressure is increased:
Dopamine has positive inotropic and vasoconstrictive effects, which can increase systolic blood pressure. An increase in systolic blood pressure is a good indicator that the medication is having a therapeutic effect by improving cardiac function and perfusion.

C) Apical heart rate is increased:
While dopamine can affect heart rate, an increase in the apical heart rate alone does not necessarily indicate therapeutic efficacy. The primary goal is to improve cardiac output and blood pressure, not just to increase heart rate.

D) Urine output is reduced:
Dopamine is expected to increase urine output by improving renal perfusion. A reduction in urine output would suggest that the medication is not effectively enhancing renal function or cardiac output.

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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.)

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Naxlex Comprehensive Predictor Exams

A home health nurse is assessing an older adult client who reports falling a couple of times over the past week. Which of the following findings should the nurse suspect is contributing to the client's falls?

Correct Answer is B

Explanation

A nurse is assessing a client who is receiving dopamine IV to treat left ventricular failure. Which of the following findings should indicate to the nurse that the medication is having a therapeutic effect?

Correct Answer is B

Explanation

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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.)

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