A nurse is caring for a client who has myasthenia gravis which has not responded to medication treatments. Which of the following surgeries can treat myasthenia gravis?
Splenectomy
Thymectomy
Appendectomy
Cholecystectomy
The Correct Answer is B
A. Splenectomy is not a standard treatment for myasthenia gravis. The spleen's role is primarily related to immune function and blood filtration rather than the pathophysiology of MG.
B. Thymectomy is a surgical procedure that involves the removal of the thymus gland. The thymus gland plays a role in the development and regulation of the immune system. In some cases of myasthenia gravis, especially in younger patients or those with thymoma (a tumor of the thymus gland), thymectomy can lead to improvement or remission of symptoms. This procedure is considered in cases where myasthenia gravis is refractory to medication or in cases associated with thymoma.
C. Appendectomy is the surgical removal of the appendix and is not a treatment for myasthenia gravis. The appendix is not implicated in the pathophysiology of MG.
D. Cholecystectomy is the surgical removal of the gallbladder and is performed for conditions related to the gallbladder, such as gallstones or inflammation. It is not indicated for the treatment of myasthenia gravis.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Atrial flutter typically presents with a regular atrial rate (usually around 250-350 beats per minute) and a characteristic "sawtooth" pattern of flutter waves (F-waves) on the ECG. This condition would not present with irregular ventricular rates and is less likely based on the ECG findings described.
B. Atrial fibrillation is identified by an irregularly irregular rhythm and the absence of P-waves on the ECG, which is replaced by erratic activity.
C. Unstable angina presents with chest pain or discomfort due to reduced blood flow to the heart muscles, usually related to atherosclerotic plaque rupture or erosion. It does not cause the ECG findings described (absence of P-waves and irregular ventricular rate).
D. PACs are early atrial depolarizations that can cause palpitations but do not typically result in the absence of P-waves or irregular ventricular rates as described in the scenario.
Correct Answer is C
Explanation
A. This function is typically managed by medications such as beta-blockers or calcium channel blockers, which help reduce heart rate and myocardial oxygen demand. Rosuvastatin does not directly affect heart rate or myocardial oxygen demand.
B. Medications like aspirin or other antiplatelet agents are used to inhibit platelet aggregation and reduce the risk of thrombus formation. Rosuvastatin is not primarily indicated for this purpose.
C. This is the correct rationale for prescribing rosuvastatin in a client with chronic stable angina. High LDL cholesterol levels contribute to the development and progression of atherosclerosis, which narrows coronary arteries and leads to angina. By lowering LDL cholesterol levels, rosuvastatin helps slow down the progression of atherosclerosis and reduces the risk of cardiovascular events, including angina.
D. Acute episodes of angina are typically managed with short-acting nitrates or other medications that dilate coronary arteries to improve blood flow to the heart muscle. Rosuvastatin does not provide immediate relief of angina symptoms.
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