Final answer:
To prolong labor in the event of contractions without cervical changes, options include administering magnesium sulfate to relax uterine muscles, prostaglandin analogs to ripen the cervix, and oxytocin to stimulate contractions.
Step-by-step explanation:
In the event of contractions without cervical changes, one option to prolong labor is to administer magnesium sulfate to relax uterine muscles. By relaxing the muscles, contractions can become less frequent and allow labor to progress at a slower pace.
Another option is to administer prostaglandin analogs to ripen the cervix. Prostaglandins help to soften and thin the cervix, making it more receptive to contractions and facilitating labor.
Administering oxytocin can also be done to stimulate contractions and help labor progress. Oxytocin is a hormone that triggers uterine contractions and can be administered to induce or maintain labor.