Final answer:
An episiotomy is a surgical incision made in the posterior vaginal wall and perineum during childbirth to facilitate the delivery process. The purpose of an episiotomy and repair is to prevent tearing of the perineum during delivery.
Step-by-step explanation:
An episiotomy is a surgical incision made in the posterior vaginal wall and perineum during childbirth to facilitate the delivery process. The purpose of an episiotomy and repair is to prevent tearing of the perineum during delivery. By making a controlled incision, the healthcare provider can ensure that the tear is in a straight line and easier to suture, reducing the risk of complications and promoting optimal healing.