Final answer:
To evaluate the effectiveness of oxytocin (Pitocin), a nurse should check the client's uterine contractions and fundal firmness to ensure that the uterus is contracting properly to prevent postpartum hemorrhage.
Step-by-step explanation:
A nurse caring for a client who is receiving oxytocin (Pitocin) IV following a normal vaginal delivery needs to check the client's uterine contractions and fundal (top of the uterus) firmness to evaluate the effectiveness of the medication. Oxytocin encourages the uterus to contract which helps prevent postpartum hemorrhage by compressing the blood vessels and reducing bleeding. A well-contracted uterus is typically firm and can be palpated at the midline of the abdomen, just below the level of the navel soon after delivery.