A patient has been receiving bethanechol (Urecholine) for 1 week. One hour after the dose is administered, he develops sweating, flushing, abdominal cramps, and nausea. What is the rationale for the development of these symptoms?
A) Myasthenic crisis
B) Cholinergic overdose
C) Anaphylactic reaction
D) Pulmonary edema
B
Feedback:
A patient who suffers cholinergic overdose will experience sweating, flushing, abdominal cramps, and nausea. An accurate diagnosis may be determined from timing in relation to medication. Signs and symptoms having an onset within approximately 1 hour after a dose of anticholinesterase drug are likely to be caused by cholinergic crisis. Signs and symptoms beginning 3 hours or more after a drug dose are more likely to be caused by myasthenic crisis. These symptoms are not the result of anaphylaxis or pulmonary edema.
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