Which medication is commonly used in the treatment of multiple sclerosis?
Pyridostigmine
Levodopa-carbidopa
Riluzole
Interferon-beta
The Correct Answer is D
A. Pyridostigmine is primarily used in the treatment of myasthenia gravis, a different autoimmune neuromuscular disorder characterized by weakness of voluntary muscles. It works by inhibiting the
enzyme acetylcholinesterase, which increases the levels of acetylcholine at neuromuscular junctions, thereby improving muscle strength. It is not used for treating multiple sclerosis.
B. Levodopa-carbidopa is commonly used to treat Parkinson’s disease. Levodopa is converted to dopamine in the brain, and carbidopa prevents levodopa from being converted into dopamine before it reaches the brain. This combination helps manage the motor symptoms of Parkinson’s disease. It is not used for multiple sclerosis.
C. Riluzole is used primarily for the treatment of amyotrophic lateral sclerosis (ALS), a neurodegenerative disease affecting motor neurons. It works by reducing the release of glutamate, a neurotransmitter that can be toxic to nerve cells. Riluzole is not used for multiple sclerosis.
D. Interferon-beta is a disease-modifying therapy used in the treatment of multiple sclerosis. It works by modulating the immune system to reduce the frequency and severity of MS relapses. Interferon-beta can help slow the progression of disability and reduce the number of new lesions seen on MRI scans.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Peptic ulcers are sores that develop on the lining of the stomach, small intestine, or esophagus due to the erosion caused by stomach acid. A Mallory-Weiss tear is not related to peptic ulcers. Instead, it results from a different type of injury related to forceful vomiting or retching.
B. Chewable aspirin is not a treatment for Mallory-Weiss tears. In fact, aspirin can exacerbate bleeding and is typically avoided in situations where gastrointestinal bleeding is present. Mallory-Weiss tears are generally managed by supportive measures and sometimes endoscopic interventions, not with aspirin.
C. A Mallory-Weiss tear specifically affects the mucosal lining at the junction of the esophagus and the stomach, not the duodenum. The duodenum is part of the small intestine, and tears or bleeding here are not characteristic of Mallory-Weiss syndrome.
D. A Mallory-Weiss tear is a tear or laceration in the mucosal lining at the gastroesophageal junction (where the esophagus meets the stomach). It is typically caused by severe vomiting or retching, which can lead to the tear and subsequent upper gastrointestinal bleeding.
Correct Answer is ["20"]
Explanation
Desired dose / Available dose = Volume to administer 500 mg / (125 mg/5 mL) = Volume to administer Volume to administer = 20 mL
Therefore, the nurse should administer 20 mL of naproxen suspension per dose.
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