A client with history of myasthenia gravis is experiencing prolonged periods of weakness and difficulty breathing. The provider orders an edrophonium [Tensilon] test. Once the dose is administered, the client becomes weaker. The nurse interprets this test result as:

A normal finding.

A myasthenia gravis crisis due to drug undermedication

An allergic reaction.

A cholinergic crisis due to drug overmedication

Answer and Explanation

The Correct Answer is D

A) A normal finding:
A normal finding during an edrophonium (Tensilon) test is an improvement in muscle strength for clients with myasthenia gravis (MG). If the client becomes weaker after the dose, it indicates that the test results are not typical and suggest a different issue, not a normal response. This is not a normal finding.

B) A myasthenia gravis crisis due to drug undermedication:
In a myasthenic crisis, the client experiences severe weakness and respiratory difficulty, typically due to insufficient medication (e.g., pyridostigmine). While a myasthenic crisis could cause weakness and respiratory distress, the edrophonium test would typically show improvement in muscle strength if the crisis is due to undermedication. Since the client became weaker after receiving edrophonium, this is not indicative of a myasthenic crisis.

C) An allergic reaction:
An allergic reaction to the edrophonium test would typically result in symptoms such as rash, swelling, or difficulty breathing due to hypersensitivity, but it does not typically cause weakness as the primary response. The worsening of symptoms after the test is more likely related to drug overmedication rather than an allergic reaction.

D) A cholinergic crisis due to drug overmedication:
A cholinergic crisis occurs when there is an overdose of acetylcholinesterase inhibitors (e.g., pyridostigmine or neostigmine), which can lead to excessive acetylcholine at the neuromuscular junction, resulting in muscle weakness and respiratory failure. The edrophonium test helps differentiate between a myasthenic crisis and a cholinergic crisis. If the client becomes weaker after the administration of edrophonium, it suggests a cholinergic crisis due to drug overmedication.

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Correct Answer is D

Explanation

A) Have the client swish with commercial mouthwash before therapy:
Some commercial mouthwashes contain alcohol, which can be irritating to the mucous membranes, especially in clients undergoing chemotherapy. Chemotherapy can cause mucositis or stomatitis, making the oral cavity more sensitive, so alcohol-based mouthwashes should be avoided

B) Place fresh flowers in the client's room:
Fresh flowers are not recommended in the rooms of clients undergoing chemotherapy because they can introduce bacteria into the environment, which is particularly concerning for clients with weakened immune systems due to chemotherapy. Chemotherapy suppresses the immune system, increasing the risk of infection.

C) Tell the client to expect dark stools following chemotherapy:
Chemotherapy can cause a variety of gastrointestinal side effects, but dark stools are not a typical or expected side effect. Dark stools may indicate gastrointestinal bleeding, which requires immediate attention.

D) Administer an antiemetic prior to the procedure:
Chemotherapy commonly causes nausea and vomiting, and preemptive administration of antiemetic medications can help prevent these symptoms. The nurse should follow the healthcare provider's orders and administer antiemetics as prescribed, which can significantly improve the client's comfort and adherence to the treatment plan.

A. Hypertension B. Indigestion C. Eupnea D. Irregular palpitations

Correct Answer is D

Explanation

A. Hypertension:

Hypertension is not directly related to the rhythm displayed in the image. The rhythm is suggestive of atrial fibrillation (AF), characterized by irregular and chaotic electrical activity, leading to irregular heartbeats. Hypertension can be a risk factor for AF but is not a typical presenting symptom.

B. Indigestion:

Indigestion is a non-specific symptom that may occur in cardiac events like myocardial infarction but is not a hallmark of atrial fibrillation. The rhythm strip does not indicate myocardial ischemia.

C. Eupnea:

Eupnea refers to normal breathing, which is not commonly associated with atrial fibrillation. Clients with AF may experience symptoms such as shortness of breath or fatigue rather than normal, unlabored breathing.

D. Irregular palpitations:

This is the most expected finding. Atrial fibrillation leads to an irregularly irregular pulse, which patients often describe as palpitations. This rhythm strip demonstrates the hallmark chaotic atrial activity and irregular ventricular response seen in AF.

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A client with history of myasthenia gravis is experiencing prolonged periods of weakness and difficulty breathing. The provider orders an edrophonium [Tensilon] test. Once the dose is administered, the client becomes weaker. The nurse interprets this test result as:

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