Which safety advantage is cited for benzodiazepines over barbiturates?

Which safety advantage is cited for benzodiazepines over barbiturates?

• A. Less respiratory depression
• B. Greater analgesia
• C. No interaction with alcohol
• D. No risk of addiction

Answer: (A)

The safety advantage hinges on how these drugs affect breathing. Barbiturates depress the brainstem’s respiratory centers much more strongly, so overdose can rapidly cause life-threatening respiratory depression. Benzodiazepines, while sedative, produce far less respiratory suppression at typical doses, and any respiratory compromise is usually less severe and more readily managed. In emergencies, benzodiazepine effects can be reversed with an antidote (flumazenil), a option not available for barbiturates, whose overdose is harder to treat. Other choices aren’t accurate: analgesia isn’t a feature of these drugs, they can interact with alcohol to worsen CNS depression, and both classes carry some addiction risk (benzodiazepines less than barbiturates, but not zero).

The safety advantage hinges on how these drugs affect breathing. Barbiturates depress the brainstem’s respiratory centers much more strongly, so overdose can rapidly cause life-threatening respiratory depression. Benzodiazepines, while sedative, produce far less respiratory suppression at typical doses, and any respiratory compromise is usually less severe and more readily managed. In emergencies, benzodiazepine effects can be reversed with an antidote (flumazenil), a option not available for barbiturates, whose overdose is harder to treat.

Other choices aren’t accurate: analgesia isn’t a feature of these drugs, they can interact with alcohol to worsen CNS depression, and both classes carry some addiction risk (benzodiazepines less than barbiturates, but not zero).