What is the primary nursing responsibility when caring for a client who is experiencing an obstetric hemorrhage associated with uterine atony?
Correct Answer: B
Rationale: Performing fundal massage is the primary nursing responsibility when caring for a client who is experiencing an obstetric hemorrhage associated with uterine atony. Uterine atony is a common cause of postpartum hemorrhage, where the uterus fails to contract and retract after childbirth, leading to excessive bleeding. Fundal massage helps stimulate uterine contractions and assists in controlling the bleeding. Establishing venous access, preparing the woman for surgical intervention, and catheterizing the bladder are important interventions as well, but fundal massage takes priority in managing uterine atony and preventing further blood loss.