Which vitamin will reduce the therapeutic effects of levodopa?
B6
A
E
K
C
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Semicomatose:
This term suggests a state between consciousness and coma. A patient who is semicomatose may exhibit some level of responsiveness but is typically unresponsive or only responds to intense stimuli.
B. Somnolent:
Somnolence refers to a state of drowsiness or sleepiness. A somnolent patient may appear sleepy, have difficulty staying awake, and may be slow to respond to stimuli. However, the withdrawal from painful stimuli described in the scenario suggests a higher level of responsiveness than what would typically be expected in a somnolent state.
C. Lethargic:
Lethargy describes a state of reduced alertness or responsiveness. A lethargic patient may appear drowsy, sluggish, and have diminished responses to stimuli. The description of the patient as stuporous (having a decreased level of consciousness) but still reacting by withdrawing from painful stimuli aligns with the characteristics of lethargy.
D. Comatose:
Coma refers to a state of profound unconsciousness where the patient is unresponsive to all stimuli, including painful stimuli. A comatose patient does not demonstrate any purposeful movement or response to stimuli. Since the patient in the scenario exhibits some response to painful stimuli by withdrawing, they do not meet the criteria for being comatose.
Correct Answer is A
Explanation
A. Difficulty initiating speech
This is a characteristic symptom of expressive aphasia. Individuals with expressive aphasia have difficulty initiating speech and may produce speech that is slow, effortful, and lacking in grammatical structure.
B. Difficulty understanding the written and spoken word
This symptom is not typically associated with expressive aphasia. Instead, difficulty understanding language, both written and spoken, is more commonly seen in receptive aphasia, also known as Wernicke's aphasia.
C. Total inability to communicate
While expressive aphasia can severely impair verbal communication, it does not result in a total inability to communicate. Individuals with expressive aphasia may still be able to communicate to some extent using nonverbal means, gestures, or writing.
D. Stuttering and spitting
Stuttering and spitting are not characteristic symptoms of expressive aphasia. Stuttering is a speech disorder characterized by interruptions in the flow of speech, while spitting is not typically associated with aphasia.
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