Jane, a 20-year old college student is admitted to the hospital with a tentative diagnosis of myasthenia gravis. She is scheduled to have a series of diagnostic studies for myasthenia gravis, including a Tensilon test. In preparing her for this procedure, the nurse explains that her response to the medication will confirm the diagnosis if Tensilon produces:
The client shows a marked improvement of muscle strength.
The client has muscles become weakened due to the impaired ability to respond to nerve signals
There is reduced amplitude of electrical stimulation in the muscle.
The anti-acetylcholine receptor antibodies are present.
The Correct Answer is A
Choice A rationale: The Tensilon test involves injecting edrophonium, and in myasthenia gravis, temporary improvement in muscle strength confirms the diagnosis by demonstrating increased acetylcholine activity at the neuromuscular junction.
Choice B rationale: This describes the pathophysiology of myasthenia gravis but doesn’t directly confirm the diagnosis via the Tensilon test.
Choice C rationale: While this may be seen in myasthenia gravis, the Tensilon test specifically aims to observe improved muscle strength after administration.
Choice D rationale: While the presence of these antibodies is a characteristic of myasthenia gravis, the Tensilon test is used to assess the immediate response to the medication for diagnostic confirmation.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A rationale: Cri du chat syndrome involves a high-pitched cry in infants and other distinct physical and developmental features, but it doesn't present with the described symptoms.
Choice B rationale: Klinefelter syndrome, characterized by an extra X chromosome (XXY) in males, typically presents with small testicles, gynecomastia (enlarged breast tissues), sexual dysfunction, and altered body proportions, such as long legs and a shorter trunk, aligning with the client's symptoms.
Choice C rationale: Patau syndrome (Trisomy 13) manifests with severe developmental issues, facial abnormalities, and other physical malformations, but the described symptoms are not typically associated with this syndrome.
Choice D rationale: Turner syndrome involves females with a missing or partially missing X chromosome (45, X), resulting in specific physical features and medical problems not consistent with the described symptoms in a male client.
Correct Answer is A
Explanation
Choice A rationale: Plantar fasciitis typically presents with severe pain in the arch of the foot, especially during the first steps in the morning or after prolonged periods of rest.
Choice B rationale: Multiple toe deformities are not typically associated with plantar fasciitis.
Choice C rationale: Redness and severe swelling are not typical findings in plantar fasciitis.
Choice D rationale: Numbness and paresthesia are not common findings in plantar fasciitis.
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