A nurse is monitoring a client following a cesarean birth 6 hr ago who received an IV bolus oxytocin immediately after birth but continues to have a boggy fundus. Which of the following should the nurse identify as the priority intervention?

A. Assess for bladder distention: A full bladder can prevent the uterus from contracting effectively, leading to a boggy fundus and increased risk of postpartum hemorrhage. Assessing and addressing bladder distention is the priority because it directly impacts uterine tone and hemorrhage prevention. B. Apply supplemental oxygen via nonrebreather mask: Oxygen may be necessary if the client shows signs of hypoxia or shock, but it does not address the primary cause of a boggy uterus. The priority is to correct the underlying issue affecting uterine contraction. C. Administer intramuscular methylergonovine: Methylergonovine is used to promote uterine contraction, but pharmacologic intervention should follow initial assessment to identify reversible causes such as bladder distention. Administering medication without assessment could overlook a correctable mechanical issue. D. Analyze coagulation studies: Coagulation studies are important if bleeding persists or coagulopathy is suspected, but they are not the immediate priority in a client with a boggy fundus shortly after birth. Immediate interventions to promote uterine contraction take precedence.