A nurse suspects a client who has myasthenia gravis is experiencing a myasthenic crisis. Which of the following interventions should the nurse take?

Administer an anticholinesterase medication.

Instruct the client to perform the pursed lip breathing.

Prepare to administer a vasoconstrictor.

Prepare the client for mechanical ventilation.

Answer and Explanation

The Correct Answer is D

Choice A reason:

Administering an anticholinesterase medication is not the primary intervention during a myasthenic crisis. While these medications can improve muscle strength in myasthenia gravis, they are not sufficient in the event of a crisis.

Choice B reason:

Pursed lip breathing is a technique used to manage dyspnea but is not adequate for the acute management of a myasthenic crisis, which can involve respiratory muscle paralysis.

Choice C reason:

Vasoconstrictors are not used in the treatment of myasthenic crisis. This condition is not related to vascular issues but to neuromuscular transmission failure leading to respiratory failure.

Choice D reason:

Mechanical ventilation is the correct intervention as it provides the necessary respiratory support when the patient's respiratory muscles are too weak to maintain adequate ventilation.

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Correct Answer is A

Explanation

Phenytoin is an anticonvulsant medication that is used to prevent and treat seizures. It works by stabilizing the electrical activity of the brain and reducing the spread of abnormal impulses. Phenytoin is usually taken for life or until the seizures are controlled by other means, such as surgery or diet. The client should not stop taking phenytoin without consulting their doctor, as this can cause withdrawal symptoms or increase the risk of seizures.

The other options are correct and indicate that the client understands the discharge teaching because:

"I have made an appointment to see my dentist next week." This statement is correct because phenytoin can cause gingival hyperplasia, which is an overgrowth of gum tissue that can lead to bleeding, infection, or difficulty chewing. The client should practice good oral hygiene and see their dentist regularly to prevent or treat this condition.

"I will notify my doctor before taking any other medications." This statement is correct because phenytoin can interact with many other medications, such as antibiotics, anticoagulants, oral contraceptives, or antacids. These interactions can aﬀect the blood levels and eﬀectiveness of phenytoin or the other medications, causing adverse eﬀects or reduced seizure control. The client should inform their doctor of any other medications they are taking or planning to take, including over-the-counter, herbal, or dietary supplements.
"I know that I cannot switch brands of this medication." This statement is correct because diﬀerent brands of phenytoin may have diﬀerent formulations or bioavailability, which can aﬀect the absorption and metabolism of the drug. Switching brands can cause changes in the blood levels and eﬀectiveness of phenytoin, leading to toxicity or reduced seizure control. The client should always use the same brand of phenytoin and check with their pharmacist if they notice any changes in the appearance or labeling of their medication.

A. "These tests help determine the degree of damage to the heart tissues." B. "These tests will enable the provider to determine the heart structure and mobility of the heart valves." C. "Cardiac enzymes will identify the location of the MI." D. "Cardiac enzymes assist in diagnosing the presence of pulmonary congestion."

Correct Answer is A

Explanation

The nurse should explain that cardiac enzyme studies measure the levels of certain enzymes, such as troponin, creatine kinase, and lactate dehydrogenase, that are released into the bloodstream when the heart muscle is damaged by an MI. These tests help determine the degree of damage to the heart tissues, as well as the timing and severity of the MI.

"These tests will enable the provider to determine the heart structure and mobility of the heart valves." is wrong because cardiac enzyme studies do not provide information about the heart structure and mobility of the heart valves. Other tests, such as echocardiography or cardiac catheterization, may be used for this purpose.

"Cardiac enzymes will identify the location of the MI." is wrong because cardiac enzyme studies do not indicate the specific location of the MI within the heart. Other tests, such as electrocardiography or coronary angiography, may be used for this purpose.

"Cardiac enzymes assist in diagnosing the presence of pulmonary congestion." is wrong because cardiac enzyme studies do not directly assess the presence of pulmonary congestion, which is a complication of heart failure. Other signs and symptoms, such as dyspnea, crackles, and chest x-ray findings, may be used for this purpose.

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A nurse suspects a client who has myasthenia gravis is experiencing a myasthenic crisis. Which of the following interventions should the nurse take?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

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Correct Answer is A

Explanation

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Correct Answer is A

Explanation

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