Читать книгу Emergency Medicine Simulation Workbook - Группа авторов - Страница 54

 Lab tests not diagnostic.

 Imaging:Abdominal radiographs:Distended loops of colon with or without air‐fluid levels“Bent inner tube sign” of distended colon in a U‐shaped pattern and extending from the pelvis toward the right upper quadrant.Paucity of gas in the rectum.Free air under the diaphragm, if perforation has occurred.Abdominal CT:Dilated loops of bowel with evidence of obstruction.“Whirl sign” or twisting of the mesentery.“Bird's beak” sign if rectal contrast has been given.Absence of gas in the rectum.Transition point within the bowel.Late findings that may indicate bowel necrosis or perforation: pneumatosis intestinalis, portal venous gas, loss of bowel wall enhancement.