Final answer:
During labor, a nurse performs vaginal examinations to assess the progress of the woman. This involves checking the cervix for dilation and effacement. Devin's intact mucus plug and undilated cervix indicate that she is not yet in active labor.
Step-by-step explanation:
During labor, vaginal examinations are performed by a nurse to assess the progress of the woman. The nurse checks the cervix to determine its dilation and effacement. This is done by inserting two gloved fingers into the vagina and feeling the cervix. The nurse will measure the cervical dilation in centimeters, with 10 cm being fully dilated. The nurse will also assess the cervix for effacement, which refers to the thinning of the cervix.
Based on the scenario provided, Devin is experiencing mild contractions, but her cervix has not yet begun to dilate. This indicates that she is still in the early stages of labor and not yet ready to give birth. As a result, she is advised to return home until her contractions become stronger and her cervix begins to dilate.