The Double Gut Point: A Novel Sonographic Sign of Pneumoperitoneum

Abstract

Pneumoperitoneum is a life-threatening condition, caused by hollow organ perforation. The diagnosis is often difficult, and Point-of-care ultrasound can be useful to distinguish from different conditions, and early set the indication of urgent surgery. We report a critically ill patient presented to the Emergency Department with sudden increase in upper abdominal pain and distension with a diagnosis of small bowel obstruction on ultrasound using a curvilinear probe. After repeating the ultrasound using a linear probe, two dynamic points at mesogastrium very similar to the “double lung point” seen in thoracic ultrasound was detected. This “double gut point” due to bowel ischemia and perforation was confirmed on a computed tomography scan. In this case, the finding of an abdominal “double gut point” allowed us to diagnose pneumoperitoneum, being a novel sign not previously described, that could aid to diagnose small amounts of free air in the peritoneal cavity.