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
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","E"]
Explanation
A) Stop taking ordered corticosteroid once symptoms resolve:
Corticosteroids, such as prednisone, are commonly prescribed to reduce inflammation in Bell’s Palsy, especially during the acute phase. However, it is important to complete the full course of corticosteroids as prescribed, even if symptoms improve. Abruptly stopping corticosteroids can lead to rebound inflammation and potentially worsen the condition.
B) Apply warm compresses to the affected area several times a day:
Warm compresses can help to reduce pain and inflammation in the affected side of the face. Applying them several times a day can also help improve circulation and ease the discomfort associated with Bell's Palsy. This is a recommended self-care strategy that can help provide relief and improve overall comfort for the client during recovery.
C) Cover the affected eye with an eye protective shield or patch at night:
Bell's Palsy can lead to paralysis of the facial muscles, which may make it difficult for the client to fully close the eyelid on the affected side, leaving the eye vulnerable to dryness and injury. Covering the eye with a protective shield or patch at night helps prevent corneal damage and protects the eye from exposure during sleep. This is an essential part of eye care for a client with Bell’s Palsy to prevent complications.
D) Chew food only on the affected side:
There is no medical recommendation to limit chewing to the unaffected side. In fact, clients should be encouraged to use both sides of their mouth for chewing to prevent muscle atrophy and maintain function. There is no evidence to support that chewing food only on the affected side provides any benefit.
E) Place artificial tears or lubricant to help decrease dryness in the eyes:
Since Bell's Palsy can impair the ability to close the eyelid fully, this can lead to dryness and potential corneal damage on the affected side. Artificial tears or lubricating eye drops should be used regularly to moisturize the eye and prevent complications such as corneal ulcers or abrasions.
Correct Answer is A
Explanation
A) Women should start yearly mammograms at age 40:
Mammography is a key screening tool for breast cancer detection. According to guidelines from the American Cancer Society (ACS) and other leading health organizations, women should begin annual mammograms at age 40. This recommendation applies to average-risk women who are not showing any symptoms of breast cancer. Mammograms are effective in detecting early-stage breast cancer, which is crucial for better treatment outcomes.
B) Women should have a yearly clinical breast examination starting at age 50:
The clinical breast examination (CBE) is a physical exam performed by a healthcare provider to check for breast cancer. However, the recommendation is to have a clinical breast examination every 1-3 years for women in their 20s and 30s and annually for women 40 and older, not just beginning at age 50. It is not necessary to wait until age 50 to start yearly CBEs.
C) Clients should have fecal occult blood test every other year:
The fecal occult blood test (FOBT) is used to detect hidden blood in the stool, which may be a sign of colon cancer. However, this test is not typically performed every other year for all clients. The recommended schedule for colorectal cancer screening depends on risk factors. The American Cancer Society recommends annual FOBT or fecal immunochemical test (FIT) for clients over the age of 45 who are at average risk for colon cancer. More invasive tests, such as colonoscopy, are generally recommended for people at higher risk or after positive results from non-invasive tests like FOBT.
D) Clients should have a colonoscopy at age 40 and every 10 years thereafter:
The recommended age for the first colonoscopy is age 45 for individuals at average risk of colorectal cancer, not 40. Colonoscopies are typically performed every 10 years after the initial screening unless there are risk factors (e.g., family history, genetic conditions) that require earlier or more frequent screenings.
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