. A patient with myasthenia gravis is admitted to the hospital with signs of a myasthenic crisis. Which of the following symptoms should the nurses expect to observe?
Increased pulse, respirations and blood pressure with dysphagia and respiratory distress
Hypotension, diarrhea and increased salivation
Bradycardia and hypothermia
Tachypnea and hyperactive deep tendon reflexes
The Correct Answer is A
A. Increased pulse, respirations and blood pressure with dysphagia and respiratory distress. A myasthenic crisis is characterized by severe muscle weakness that can lead to respiratory failure, dysphagia, and increased vital signs due to the stress of respiratory distress.
B. Hypotension, diarrhea, and increased salivation. These symptoms are more indicative of a cholinergic crisis, which is due to excess acetylcholine.
C. Bradycardia and hypothermia. Bradycardia and hypothermia are not characteristic signs of a myasthenic crisis.
D. Tachypnea and hyperactive deep tendon reflexes. While tachypnea can occur in respiratory distress, hyperactive reflexes are not typical in myasthenic crisis, as it involves neuromuscular weakness.
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Correct Answer is B
Explanation
A. Inflammation of the motor cortex leads to decreased coordination and balance. Parkinson’s disease is not caused by inflammation in the motor cortex; it primarily involves the loss of dopamine-producing neurons.
B. Degeneration of dopamine-producing neurons in the substantia nigra of the brain leads to motor dysfunction. Parkinson’s disease is caused by the degeneration of dopamine-producing neurons in the substantia nigra, leading to motor symptoms such as tremors, rigidity, and bradykinesia.
C. A loss of acetylcholine in the brain leads to memory problems and cognitive decline. While a loss of acetylcholine is associated with Alzheimer’s disease, it is not the primary issue in Parkinson’s disease.
D. Excess production of dopamine in the basal ganglia leads to tremors and muscle rigidity. In Parkinson’s disease, there is a decrease, not an excess, in dopamine production, which contributes to motor symptoms.
Correct Answer is A
Explanation
A. Reduction of inflammation and suppression of immune responses. Methylprednisolone is a corticosteroid that reduces inflammation and suppresses immune responses, which can help manage the acute exacerbations of MS.
B. Stimulation of nerve regeneration. Methylprednisolone does not stimulate nerve regeneration; it focuses on reducing inflammation.
C. Improvement in cognitive function. Cognitive improvement is not a primary goal of methylprednisolone in MS management, though reducing inflammation may indirectly benefit cognition.
D. Increase in muscle strength and coordination. While reducing inflammation can improve symptoms, methylprednisolone itself does not directly increase muscle strength or coordination.