After receiving report on an inpatient acute care unit, which client should the nurse assess first?

A. While the presence of greenish fluid in a nasogastric tube can indicate a small bowel obstruction, this finding alone does not necessarily indicate an immediate life-threatening condition. The client should be monitored, but this is not the priority. B. Abdominal rigidity in the context of a volvulus (twisting of the bowel) can indicate bowel ischemia or perforation, which is a surgical emergency. Immediate intervention is needed to prevent further complications such as sepsis or peritonitis. C. A paralytic ileus is a common postoperative complication and often resolves with time. While the absence of bowel sounds is concerning, it is a routine finding in this situation and does not require immediate attention unless there are signs of further complications. D. Abdominal distention in a large bowel obstruction can indicate a need for further assessment and treatment. However, compared to a volvulus with abdominal rigidity, this situation is less urgent and does not represent an immediate life-threatening emergency.