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. Instruct the client to perform controlled coughing and deep breathing.
This intervention is not appropriate for a client with increased intracranial pressure. Controlled coughing and deep breathing can increase intrathoracic pressure, which can in turn increase intracranial pressure. Therefore, this intervention should be avoided in clients with increased ICP.
B. Provide a brightly lit environment.
This intervention is not appropriate for a client with increased intracranial pressure. Bright lights can stimulate the reticular activating system and increase arousal, potentially exacerbating cerebral metabolic demand and intracranial pressure. Therefore, it is recommended to provide a calm, quiet environment with subdued lighting for clients with increased ICP.
C. Elevate the head of the bed 30°.
This intervention is correct. Elevating the head of the bed to 30 degrees promotes venous drainage from the head and reduces intracranial pressure. It helps prevent venous congestion in the brain and improves cerebral perfusion. This position is commonly used in clients with increased intracranial pressure to optimize cerebral blood flow.
D. Encourage a minimum intake of 2,000 mL/day of clear fluids.
This intervention is not appropriate for a client with increased intracranial pressure. While maintaining hydration is important for overall health, excessive fluid intake can increase intracranial pressure by increasing cerebral blood volume and cerebrospinal fluid production. Therefore, fluid intake should be carefully monitored and adjusted based on the client's condition and fluid balance.
Correct Answer is ["A","B","C","D","E","F"]
Explanation
A. Muscle tremors:
Muscle tremors, particularly resting tremors, are a hallmark feature of Parkinson's disease. These tremors typically occur in the hands, fingers, arms, legs, jaw, or head and may worsen with stress or inactivity.
B. Slow body movement (bradykinesia):
Bradykinesia refers to slowness of movement and is another key symptom of Parkinson's disease. Patients may have difficulty initiating movement, experience a decrease in spontaneous movement (hypokinesia), and demonstrate reduced range of motion.
C. Rigidity:
Rigidity, or stiffness of the muscles, is a common symptom of Parkinson's disease. It often affects the limbs and trunk and can contribute to difficulty with movement and posture.
D. Pill rolling:
Pill rolling refers to a specific type of tremor characterized by rhythmic, rolling movements of the thumb and fingers, resembling the action of rolling a pill between the fingers and thumb. This tremor is commonly seen in Parkinson's disease.
E. Lack of facial expression:
Parkinson's disease can lead to a reduced range of facial expressions, also known as hypomimia or "masked facies." Patients may have a fixed, expressionless facial appearance and reduced blinking.
F. Drooling:
Drooling, or excessive salivation, can occur in Parkinson's disease due to impaired swallowing function (dysphagia) and reduced control over oral and facial muscles.
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