A patient exhibits ptosis of both eyes and the provider orders edrophonium (Tensilon). The nurse notes immediate improvement of the ptosis.
The nurse understands that this patient most likely has which disorder?

Myasthenia gravis.

Cerebral palsy.

Multiple sclerosis.

Muscle spasm.

Answer and Explanation

The Correct Answer is A

Choice A rationale

Myasthenia gravis is an autoimmune neuromuscular disorder characterized by weakness and fatigue of the skeletal muscles. Improvement of ptosis after administration of edrophonium (Tensilon), a short-acting acetylcholinesterase inhibitor, is a diagnostic indicator of myasthenia gravis.

Choice B rationale

Cerebral palsy is a group of permanent movement disorders that appear in early childhood. It is primarily caused by abnormal development or damage to the brain and does not exhibit rapid improvement with edrophonium.

Choice C rationale

Multiple sclerosis is a chronic illness involving the central nervous system, where the immune system attacks the protective sheath (myelin) that covers nerve fibers. It does not respond to edrophonium as myasthenia gravis does.

Choice D rationale

Muscle spasm refers to an involuntary contraction of a muscle that can be sudden and painful. This condition is not typically diagnosed or treated with edrophonium, which is specific for myasthenia gravis. .

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Correct Answer is A

Explanation

Choice A rationale

Drawing up regular insulin first is recommended to avoid contamination of the vial with other types of insulin.

Choice B rationale

Incorrect, as it is standard practice to draw up regular insulin first to maintain purity and efficacy.

A. Ataxia. B. Dysrhythmias. C. Blurred vision. D. Hypotension.

Correct Answer is D

Explanation

Choice A rationale

Ataxia is less commonly associated with opioids than other adverse effects.

Choice B rationale

Dysrhythmias are not typically associated with opioids.

Choice C rationale

Blurred vision isn't a major adverse effect of opioids.

Choice D rationale

Hypotension is a common adverse effect of opioid use and must be monitored.

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A patient exhibits ptosis of both eyes and the provider orders edrophonium (Tensilon). The nurse notes immediate improvement of the ptosis.The nurse understands that this patient most likely has which disorder?

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Correct Answer is A

Explanation

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Correct Answer is D

Explanation

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A patient exhibits ptosis of both eyes and the provider orders edrophonium (Tensilon). The nurse notes immediate improvement of the ptosis.
The nurse understands that this patient most likely has which disorder?