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 A
Explanation
A. The client should maintain systolic BP between 120 and 129 mm Hg.
This is an appropriate recommendation. The American Heart Association (AHA) guidelines recommend maintaining systolic BP below 130 mm Hg to reduce the risk of stroke and other cardiovascular events in individuals with a history of stroke or TIA.
B. The client should maintain systolic BP between 130 and 135 mm Hg.
This is slightly above the recommended range. While systolic BP below 135 mm Hg is generally recommended for individuals with a history of stroke or TIA, a range of 130-135 mm Hg may still be acceptable based on individual patient factors and risk assessments.
C. The client should maintain systolic BP between 136 and 140 mm Hg.
This is above the recommended range. Systolic BP between 136 and 140 mm Hg may be considered elevated and should be managed to lower levels to reduce the risk of recurrent TIA or stroke.
D. The client should maintain systolic BP between 141 and 145 mm Hg.
This is above the recommended range. Systolic BP above 140 mm Hg is generally considered elevated and should be managed to lower levels to reduce the risk of recurrent TIA or stroke.
Correct Answer is B
Explanation
A. Fresh fish
Fresh fish does not contain significant amounts of tyramine. Therefore, there is no need to eliminate fresh fish from the client's diet due to its interaction with selegiline.
B. Cheddar cheese
This is the correct answer. Cheddar cheese is a high-tyramine food and should be eliminated from the client's diet when taking MAOIs. Aged cheeses, such as cheddar, contain high levels of tyramine due to the fermentation process, which can increase the risk of a hypertensive crisis when combined with MAOIs.
C. Cherries
Cherries do not contain significant amounts of tyramine. Therefore, there is no need to eliminate cherries from the client's diet due to their interaction with selegiline.
D. Chicken
Chicken does not contain significant amounts of tyramine. Therefore, there is no need to eliminate chicken from the client's diet due to its interaction with selegiline.
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