Acute Colonic Pseudoobstruction (Ogilvie's Syndrome)

Dr. Jeffrey Guy presents a podcast episode of ICU Rounds focusing on acute colonic pseudo-obstruction, also known as Ogilvie's syndrome. He begins with a patient case and then delves into definitions, differentiating it from mechanical obstruction and ileus, and explains the Law of Laplace in relation to colonic tension and potential for ischemia. The podcast covers the etiology, predisposing factors (including medications and post-operative conditions), epidemiology, and symptoms of Ogilvie's, emphasizing that it typically occurs in elderly, debilitated patients and that abdominal tenderness is a late sign. Dr. Guy discusses differential diagnoses like toxic megacolon and ischemic colitis, laboratory tests, and diagnostic imaging, including the use of contrast enemas and colonoscopy. He outlines management strategies, starting with conservative measures and progressing to pharmacotherapy with Neostigmine and colonoscopic decompression, and addresses more invasive surgical options like cecostomy for patients who fail initial treatments. The podcast concludes with a correction to a previous episode regarding the terms allograft and autograft.