What is Rigler sign?
Intraperitoneal free gas clearly delineates the bowel wall on both sides.
What is your next step in managing this patient?
The treating clinician needs to be informed of the results urgently along with recommendation for urgent general surgical review +/- CT.
Markedly distended small bowel loops throughout the abdomen with air-fluid levels in keeping with small bowel obstruction. There is evidence of pneumatosis. Rigler sign indicates free intraperitoneal gas.