A nurse is explaining myasthenia gravis to a family. Which of the following points would be included in the explanation? (Select All that Apply.)
Is it caused by demyelination of the nerve fibers.
Is it thought to be an autoimmune disease.
It is associated with destruction of acetylcholine receptor sites.
Once symptoms present, it has a 5-year survival rate.
It is a chronic and progressive muscular disease.
Is it best treated with antibiotics.
Correct Answer : B,C,E
A) Is it caused by demyelination of the nerve fibers:
Myasthenia gravis is not primarily caused by demyelination of nerve fibers. It is characterized by dysfunction at the neuromuscular junction, specifically involving the acetylcholine receptors.
B) Is it thought to be an autoimmune disease:
This is correct. Myasthenia gravis is considered an autoimmune disorder in which the body's immune system mistakenly targets and attacks its own tissues, particularly the acetylcholine receptors at the neuromuscular junction.
C) It is associated with destruction of acetylcholine receptor sites:
This is correct. In myasthenia gravis, there is a reduction in the number of functional acetylcholine receptors due to autoimmune-mediated destruction or blocking of these receptors.
D) Once symptoms present, it has a 5-year survival rate:
This statement is inaccurate. Myasthenia gravis is a chronic condition, but survival rates are not determined by the onset of symptoms. With appropriate treatment, many individuals with myasthenia gravis can manage their symptoms effectively and have a normal life expectancy.
E) It is a chronic and progressive muscular disease:
This is correct. Myasthenia gravis is a chronic neuromuscular disorder characterized by fluctuating muscle weakness and fatigue. While it is chronic, it is not necessarily progressive in all cases, as symptoms may stabilize or improve with treatment.
F) Is it best treated with antibiotics:
Antibiotics are not the primary treatment for myasthenia gravis. Treatment typically involves medications that enhance neuromuscular transmission, such as acetylcholinesterase inhibitors or immunosuppressive drugs, along with other supportive measures.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) By blocking the effects of histamine in the body:
Antihistamines are pharmacological agents that work by antagonizing the effects of histamine, a chemical mediator released by mast cells and basophils in response to allergens or other triggers. Histamine contributes to various allergic symptoms such as itching, sneezing, nasal congestion, and watery eyes. Antihistamines exert their effects by competitively binding to histamine receptors (specifically H1 receptors) on target cells, thereby preventing histamine from binding and exerting its physiological effects. By blocking histamine receptors, antihistamines inhibit the action of histamine, leading to the alleviation of allergy symptoms.
B) By reducing inflammation in the body:
While some medications, such as corticosteroids, exert anti-inflammatory effects by suppressing the immune response and inhibiting the production of inflammatory mediators, antihistamines primarily target histamine receptors and do not directly reduce inflammation. Although histamine release can contribute to inflammation, antihistamines mitigate allergic symptoms primarily by blocking the action of histamine rather than by directly reducing inflammation.
C) By increasing the production of histamine in the body:
This statement is inaccurate. Antihistamines do not increase the production of histamine; instead, they counteract the effects of histamine by blocking its activity at receptor sites. The primary mechanism of action of antihistamines involves blocking histamine receptors to prevent histamine from exerting its physiological effects.
D) By stimulating the immune system:
Antihistamines do not stimulate the immune system. Instead, they act as antagonists to histamine receptors, thereby inhibiting histamine-induced responses. While histamine is involved in immune responses and allergic reactions, antihistamines do not directly modulate immune function or stimulate immune activity. Their primary role is to alleviate allergy symptoms by blocking the effects of histamine."
Correct Answer is A
Explanation
A) "I will weigh myself daily and report significant changes in weight":
This statement demonstrates an understanding of the nurse's teaching about diuretics. Diuretics are medications that promote diuresis, leading to increased urine output and fluid loss. Monitoring weight daily can help the client identify fluid retention or volume overload, which are common concerns in individuals taking diuretics. Significant changes in weight, such as sudden increases, may indicate fluid retention or worsening heart failure and should be reported to the healthcare provider promptly for further evaluation.
B) "If my leg gets swollen again, I'll be sure to take an additional pill":
This statement indicates a misunderstanding of the nurse's teaching. Taking an additional pill without healthcare provider guidance can lead to medication overdose and potential adverse effects. It's important for clients to follow the prescribed dosage regimen and consult their healthcare provider before making any changes to their medication regimen.
C) "I will take my medication before bedtime":
While taking diuretics before bedtime may be appropriate for some individuals, it is not a universal recommendation. The timing of diuretic administration can vary depending on the specific type of diuretic prescribed, the client's individual needs, and the presence of any coexisting conditions. Therefore, this statement does not necessarily indicate an understanding of the nurse's teaching about diuretics.
D) "I will have to limit my high sugar foods":
This statement does not directly relate to the nurse's teaching about diuretics. While dietary modifications may be necessary for certain health conditions, such as diabetes, they are not specifically related to the mechanism of action or management of diuretic therapy. Therefore, this statement does not demonstrate an understanding of the nurse's teaching about diuretics.
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