The nurse is caring for a client with a diagnosis of myasthenia gravis who has recently experienced the death of her parents in a car accident. The nurse anticipates the possibility of:
1. Myasthenia crisis.
2. Cholinergic crisis.
3. A negative Tensilon (edrophonium chloride) test.
4. Altered facial expression.
1
Rationale: Myasthenia crisis often follows periods of acute stress, and would be diagnosed by a positive Tensilon test. A cholinergic crisis is usually precipitated by a drug overdosage. Altered facial expression is a manifestation of the diagnosis.
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A student studying biology asks the professor to describe how the ras gene is involved in cancer proliferation. What explanation by the professor is best?
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