AACN Exam CCRN-Adult Topic 1 Question 4 Discussion

The clinical presentation of lower left quadrant pain with guarding, abdominal distention, rigidity, and free air in the abdominal cavity on a KUB (kidney, ureter, and bladder) radiograph strongly suggests a perforated bowel. The presence of free air indicates that there is a breach in the gastrointestinal tract, allowing air to escape into the peritoneal cavity. The patient's vital signs, including hypotension (BP 76/40), tachycardia (HR 130), tachypnea (RR 32), and fever (T 101.7F), are consistent with sepsis and shock, which are common complications of bowel perforation. Reference: CCRN Exam Handbook, AACN, page 30, section on Gastrointestinal.