NCLEX-RN

Category - Pharmacological

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A client with a diagnosis of myasthenia gravis tells the nurse that she feels more weak than usual. The physician administers edrophonium (Tensilon) to determine whether the client is experiencing myasthenia crisis or cholinergic crisis. The nurse determines that the client is having myasthenia crisis when which of the following signs is observed?

Muscle strength improves temporarily
Weakness is more severe
No improvement
Increased muscle spasticity

Explanation

Answer: A - The client is experiencing myasthenia crisis when muscle strength improves temporarily after the administration of edrophonium. Cholinergic crisis is manifested by worsening muscle weakness.

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