A patient with 2-year history of glaucoma enters the emergency department with signs and symptoms consistent with those caused by irreversible cholinesterase inhibitors. The nurse understands that these findings are most likely the result of
a. overdose of echothiophate.
b. a drug-to-drug interaction.
c. poisoning by organophosphates.
d. a severe adverse reaction to the medication.
ANS: A
The limited indication for echothiophate should be no surprise, given its potential for toxicity. This scenario clearly states that a patient with glaucoma is displaying the signs and symptoms of overdose consistent with echothiophate.
There is no indication that the patient has experienced a drug-to-drug interaction.
There is no indication that the patient has been exposed to organophosphates.
The patient has a 2-year history of glaucoma; a severe adverse reaction would have occurred during initial use of the medication.
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