A hospitalized patient who is given one dose of flurazepam continues to show drowsiness the next day. A nursing student asks the nurse the reason for this, because the drug's half-life is only 2 to 3 hours
Which response by the nurse is correct?
a. "Benzodiazepines commonly cause residual effects lasting into the day after the dose is given."
b. "The patient is having a paradoxical reaction to this medication."
c. "This patient must have developed a previous tolerance to benzodiazepines."
d. "When this drug is metabolized, the resulting compound has longer lasting effects."
ANS: D
Flurazepam has a half-life of 2 to 3 hours; however, its metabolite has a long half-life, so giving the drug results in long-lasting effects. Barbiturates, not benzodiazepines, are commonly associated with residual, or hangover, effects. A paradoxical reaction to a sedative would manifest as insomnia, euphoria, and excitation, not drowsiness. Tolerance means that the patient would need increased amounts of a drug to get the desired effects and would not have prolonged effects of the medication.
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