Final answer:
Assisting with the delivery of the placenta is a key nursing action in the 3rd phase of labor, although monitoring the mother's vitals and providing emotional support are also crucial.
Step-by-step explanation:
An important nursing action to undertake in the 3rd phase of labor is assisting with the delivery of the placenta. During this stage, also known as the afterbirth phase, the placenta, which has been nourishing the baby during pregnancy, detaches from the uterine wall and is expelled.
In the third stage of labor, the focus is on ensuring that the placenta is delivered completely and that no parts remain inside the uterus, as this could lead to postpartum complications such as bleeding or infection. Monitoring the mother's vital signs is also essential throughout the entire labor process to ensure her well-being. Most importantly, providing emotional support remains a critical component during all stages of labor, including the third stage.
Administering oxytocin is more commonly associated with inducing labor or enhancing contractions during the first two stages, and if labor is not progressing as expected. However, it may also be used after the delivery of the baby to stimulate uterine contractions to help with the expulsion of the placenta and prevent postpartum hemorrhage.