The nursing instructor is conducting a class discussion on the various agents used during labor and delivery to assist the client. the instructor determines the class is successful after the students correctly choose which factor as true about the use of systemic analgesia?
a. opioids are more effective if given po.
b. benzodiazepines enhance pain relief attained with opioids and cause sedation.
c. barbiturates are used primarily in active labor and during transition.
d. ataractics are used for pain relief but may cause nausea and vomiting.