Ogilvie syndrome, or acute colonic pseudo-obstruction (ACPO), is a condition where the large intestine (colon) becomes suddenly and severely dilated (swollen) without any physical blockage (like a tumor or scar tissue), mimicking a bowel obstruction. It's caused by a disruption in the nerves and muscles controlling colon movement, leading to paralysis and buildup of gas and fluid, causing symptoms like bloating, pain, nausea, and constipation, and it often occurs after surgery, trauma, or in critically ill patients, with risks of perforation if untreated.
The use of certain medications has also been associated with the development of Ogilvie syndrome including neuroleptic medications, anticholinergics, amphetamines, steroids and narcotics. Ogilvie syndrome most likely results from abnormalities affecting the autonomic nervous system's control of colonic motor function.
A blockage in your digestive system can be: in the small intestine or the large intestine. partial (meaning your bowel is partly blocked and some faeces (poo) can still get through) or complete (meaning it is fully blocked and not even gas can get through)
It usually resolves on its own in a few days. Ogilvie syndrome affects your colon, specifically — usually right at the start of it (your cecum).
Nausea and vomiting, constipation, diarrhea, and pain are all more common in Ogilvie syndrome than in adynamic ileus. The diagnosis is made by the clinical findings, including high-pitched bowel sounds, and radiographic findings of marked distention of the proximal colon with distal cutoff of colonic gas.
The four cardinal symptoms of bowel obstruction are pain, vomiting, obstipation/absolute constipation, and distention. Obstipation, change in bowel habits, complete constipation, and abdominal distention are the predominant symptoms in LBO.
The 3-6-9 rule is a guideline for interpreting abdominal X-rays to detect bowel obstruction, stating normal upper limits are 3 cm for the small bowel, 6 cm for the large bowel (colon), and 9 cm for the cecum; diameters exceeding these suggest dilation, a key sign of obstruction, with larger measurements increasing the risk of rupture (e.g., >6cm small bowel, >9cm cecum).
Ogilvie syndrome is a relatively uncommon incidence, only composing of 0.1% (100/100,000) of all inpatient admissions annually [3]. Patients with Ogilvie syndrome present symptoms of bowel obstruction, nausea, vomiting, abdominal distension, and obstipation with bowel obstruction on CT imaging or x-ray [4-5].
Patients with Ogilvie syndrome may experience abdominal pain, bloating, nausea, vomiting, and an inability to pass gas or stool. Commonly identified risk factors include trauma, various medical illnesses, and cardiovascular disease.
As the obstruction gets worse, your symptoms may happen more often and become more severe. You may have frequent vomiting, extreme bloating, and intense abdominal pain. These are signs of a complete obstruction, in which stool and gas are mostly or totally blocked from leaving the body.
Gray or Clay-Colored Stool
The stool can be gray or clay-colored if it contains little or no bile. The pale color may signify a condition (biliary obstruction) where the flow of bile to the intestine is obstructed, such as obstruction of the bile duct from a tumor or gallstone in the duct or nearby pancreas.
Laxatives: You can drink a polyethylene glycol (PEG) solution or use an over-the counter (OTC) laxative to cleanse your colon. Surgery: If you have severe fecal impaction, your healthcare provider will perform surgery, especially to target symptoms of bleeding due to a tear in your bowel (bowel perforation).
SBO presents with hallmark symptoms of abdominal pain, vomiting, distension, and obstipation. The pathophysiology includes bowel distension, impaired venous return, mucosal ischemia, bacterial translocation, and, in severe cases, necrosis, perforation, and peritonitis.
An obstruction typically feels like severe cramping pain in your abdomen. The pain from a small bowel obstruction is more likely to come in short intermittent waves, occurring every few minutes or so. The pain is more likely to feel concentrated in one place.
How is Ogilvie Syndrome diagnosed? Diagnosis of Olgivie Syndrome is by radiography and CT scan. If the caecal diameter is greater than 10m on radiograph this is indicative of a significant risk of impending perforation and a CT scan is required to confirm diagnosis.
Without any fluids (either as sips, ice chips or intravenously) people with a complete bowel obstruction most often survive a week or two. Sometimes it's only a few days, sometimes as long as three weeks. With fluids, survival time may be extended by a few weeks or even a month or two.
Diagnosis of Ogilvie's syndrome is based on clinical and radiologic grounds, and can be treated conservatively or with interventions such as acetylcholinesterase inhibitors (such as neostigmine), decompressive procedures including colonoscopy, and even surgery.
In Hirschsprung's disease, the nerves that control this movement are missing from a section at the end of the bowel, which means poo can build up and form a blockage. This can cause severe constipation and sometimes lead to a serious bowel infection called enterocolitis.
Common symptoms include: Abdominal cramping and bloating. Leakage of liquid or sudden episodes of watery diarrhea in someone who has chronic (long-term) constipation. Rectal bleeding.
In most cases, these signs and symptoms subside with use of a regimen such as prune juice, warm fluids, stool softeners, oral laxatives, suppositories, enemas, and mobilization.
Symptoms of bowel obstruction include:
The upper limit of normal diameter of the bowel is generally accepted as 3cm for the small bowel, 6cm for the colon and 9cm for the caecum (3/6/9 rule).
Multidetector CT has a sensitivity and specificity of 95% for the diagnosis of high-grade SBO and is less accurate in partial obstruction (4,6–8). As with radiography, the hallmark is dilated (> 2.5 cm) proximal small bowel with decompressed distal small bowel and colon (Table 2, Fig 7) (15).
Pseudo-obstruction
A bowel obstruction can begin suddenly or may progress gradually over several weeks or days. 2 Before a complete bowel obstruction develops, you may experience some warning signs caused by a partial bowel obstruction. Symptoms that often precede a partial or complete bowel obstruction include: Decreased appetite.