A patient is admitted with a diagnosis of myasthenia gravis. What symptom should the nurse expect to find during the assessment?

Correct Answer: B

Rationale: The correct answer is B: Muscle weakness. Myasthenia gravis is characterized by muscle weakness due to an autoimmune attack on acetylcholine receptors at the neuromuscular junction. This leads to impaired muscle contraction and weakness, especially in the face, neck, and extremities. Joint pain (A) is not a typical symptom of myasthenia gravis. Loss of sensation (C) is more indicative of a sensory nerve disorder rather than a motor disorder like myasthenia gravis. Severe headache (D) is not a common symptom of myasthenia gravis; it is more likely to be associated with other conditions such as migraines or intracranial pathology.

Correct Answer: D

Rationale: The correct answer is D because stopping warfarin one week before surgery reduces the risk of excessive bleeding during the procedure. Warfarin's anticoagulant effect can persist for several days, so stopping it earlier allows time for its effects to diminish. Choice A is incorrect because continuing warfarin until the day of surgery increases bleeding risk. Choice B is incorrect as stopping warfarin only three days before surgery may not provide enough time for the anticoagulant effect to wear off. Choice C is incorrect as aspirin is not a suitable substitute for warfarin in most cases.

Correct Answer: B

Rationale: The correct answer is B: To reduce nitrogenous waste. In renal failure, the kidneys cannot effectively filter waste products like urea and creatinine, leading to their accumulation in the blood. A low-protein diet reduces the production of these nitrogenous wastes, lessening the burden on the kidneys. A low-protein diet does not directly prevent fluid overload (A), maintain electrolyte balance (C), or prevent hyperglycemia (D) in renal failure. These functions are typically managed through other dietary modifications and treatments specific to each condition.

Correct Answer: B

Rationale: The correct answer is B: Relieve bronchospasm. Short-acting beta2-agonists (SABAs) like albuterol act by stimulating beta2 receptors in the airway smooth muscle, leading to bronchodilation and relieving bronchospasm. This helps to quickly open up the airways during an acute asthma exacerbation. Choice A is incorrect because SABAs do not directly reduce inflammation. Choice C is incorrect as SABAs do not affect respiratory secretions. Choice D is incorrect as SABAs do not suppress cough but rather target bronchospasm.

Correct Answer: B

Rationale: Step 1: Statins can cause muscle pain or weakness as a side effect. Step 2: Prompt reporting of muscle pain or weakness is crucial to address potential myopathy or rhabdomyolysis. Step 3: Nurse should educate patient to report any muscle symptoms promptly for timely intervention and prevention of complications. Summary: Option B is correct as it emphasizes the importance of monitoring and reporting potential side effects of statins. Options A, C, and D are incorrect as taking with food, increasing grapefruit juice intake, and avoiding potassium-rich foods are not relevant considerations for statin therapy.