Final answer:
The most common complication of oxytocin augmentation or induction of labor is postpartum hemorrhage.
Step-by-step explanation:
Oxytocin augmentation or induction of labor can lead to various complications, but the most common one is postpartum hemorrhage. Postpartum hemorrhage refers to excessive bleeding after childbirth and can occur due to factors such as uterine atony, tearing of blood vessels, or retained placental fragments. It is important for healthcare providers to closely monitor and manage postpartum hemorrhage to ensure the well-being of the mother.