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 D
Explanation
Choice A rationale: This is a possible sign of TBI but is not necessarily indicative of a life- threatening condition.
Choice B rationale: This is a possible sign of TBI but is not necessarily indicative of a life- threatening condition.
Choice C rationale: This is a possible sign of TBI but is not necessarily indicative of a life- threatening condition.
Choice D rationale: Serosanguineous nasal drainage (a mixture of blood and clear fluid) may suggest a basilar skull fracture, which is a fracture of the base of the skull that can damage vital structures such as the brainstem, cranial nerves, or major blood vessels. This can lead to serious complications such as meningitis, cerebrospinal fluid leak, or hemorrhage.
Correct Answer is ["A","B","C","D","E"]
Explanation
Choice A rationale: This is a condition where the skin of the breast becomes dimpled and resembles an orange peel. It is caused by blockage of the lymphatic vessels by cancer cells or inflammation.
Choice B rationale: This is a condition where the skin of the breast breaks down and forms an open sore. It can be a sign of advanced or inflammatory breast cancer.
Choice C rationale: This is a condition where the nipple becomes inverted or pulled inward. It can be caused by scarring, infection, or cancer in the breast tissue or ducts.
Choice D rationale: These are lymph nodes in the armpit that are enlarged and hard but not painful. They can be a sign of cancer spreading from the breast to the lymphatic system.
Choice E rationale: This is a lump in the breast that can be felt and moved around. It is located at the upper outer quadrant of the right breast, as if looking at a clock face. It can be benign or malignant, depending on its size, shape, consistency, and borders.
Choice F rationale: Dense breast tissue is not an abnormal finding that indicates possible breast cancer. It is a normal variation that makes it harder to detect lumps or
abnormalities on mammograms. Women with dense breasts may need additional screening tests such as ultrasound or MRI.
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