Which vitamin will reduce the therapeutic effects of levodopa?

Answer and Explanation

The Correct Answer is A

A. B6 (Pyridoxine):

Vitamin B6, also known as pyridoxine, is known to reduce the therapeutic effects of levodopa. It competes with levodopa for absorption in the gastrointestinal tract and can decrease the amount of levodopa that reaches the brain, thereby diminishing its effectiveness in treating Parkinson's disease symptoms.

B. A (Retinol):

Vitamin A, also known as retinol, is not typically associated with reducing the therapeutic effects of levodopa. Vitamin A plays important roles in vision, immune function, and cellular communication, but it does not interact with levodopa in a way that affects its therapeutic efficacy.

C. E (Alpha-Tocopherol):

Vitamin E, also known as alpha-tocopherol, is an antioxidant that plays a role in protecting cells from oxidative damage. While vitamin E supplementation is sometimes used in Parkinson's disease management for its potential neuroprotective effects, it is not known to reduce the therapeutic effects of levodopa.

D. K (Phylloquinone):

Vitamin K, also known as phylloquinone, is primarily involved in blood clotting and bone metabolism. It does not interact with levodopa in a way that reduces its therapeutic effects.

E. C (Ascorbic Acid):

Vitamin C, also known as ascorbic acid, is not known to reduce the therapeutic effects of levodopa. While vitamin C has various roles in the body, including antioxidant activity and immune function support, it does not interfere with levodopa absorption or efficacy.

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Free Nursing Study Resources

Correct Answer is ["10"]

Explanation

To calculate the dose of valproic acid oral solution, the nurse should use the following formula:

Dose (mL) = Ordered dose (mg) / Concentration (mg/mL) x Volume (mL)

Plugging in the values from the question, we get:

Dose (mL) = 500 mg / (250 mg / 5 mL) x 5 mL

Simplifying, we get:

Dose (mL) = 500 mg / 50 mg x 5 mL

Dose (mL) = 10 mL

Therefore, the nurse should administer 10 of valproic acid oral solution to the patient.

A. "Have you had an MMR immunization?" B. "Have you had a recent upper respiratory infection?" C. "Have you traveled overseas recently?" D. "Are you taking a multivitamin?"

Correct Answer is B

Explanation

A. "Have you had an MMR immunization?"

This question is not directly relevant to the assessment of Guillain-Barré syndrome. MMR immunization history may be pertinent to other health assessments, such as immunity to measles, mumps, and rubella.

B. "Have you had a recent upper respiratory infection?"

This is the correct answer. GBS often occurs after a recent upper respiratory or gastrointestinal infection, so asking about recent illnesses can provide valuable information for diagnosis.

C. "Have you traveled overseas recently?"

While travel history may be relevant to certain infectious diseases, it is not typically associated with the development of Guillain-Barré syndrome. Therefore, this question is less pertinent in this context.

D. "Are you taking a multivitamin?"

The use of multivitamins is unlikely to be directly related to the development of Guillain-Barré syndrome. While nutritional status is important for overall health, it is not a primary focus when assessing for GBS.

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Which vitamin will reduce the therapeutic effects of levodopa?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer valproic acid 500 mg PO. Available is valproic acid oral solution 250 mg/5 mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["10"]

Explanation

A nurse is collecting data from a client who has a possible medical diagnosis of Guillain-Barré syndrome (GBS). Which of the following questions should the nurse ask the client?

Correct Answer is B

Explanation

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