Sigmoid Volvulus Clinical Presentation and Management

Primary Clinical Presentation

The classic triad of symptoms in sigmoid volvulus includes abdominal pain, constipation, and abdominal distension, with vomiting appearing as a late sign, according to the World Journal of Emergency Surgery 1, 2, 3
Abdominal pain is typically progressive and can be severe, often accompanied by constipation and abdominal distension 1, 3
Previous episodes of abdominal distention are reported in 30-41% of cases, indicating a potential history of volvulus 1, 3

Abdominal distension is often pronounced and asymmetric, with diminished bowel sounds due to colonic obstruction 1, 3
An empty rectum on digital examination is a characteristic finding, and asymmetric gaseous abdominal distention with emptiness of the left iliac fossa is considered pathognomonic for sigmoid volvulus 1, 3

Symptom duration typically ranges from a few hours to several days, with patients in Western countries usually presenting 3-4 days after symptom onset 1, 3
In "volvulus belt" countries, presentation may be more acute with peritonitis and shock 1, 3

The classic triad is more common in endemic volvulus (88%) compared to sporadic cases (33%), and typical patient profiles in Western countries include elderly, institutionalized individuals taking psychotropic medications that cause chronic constipation 1, 3
Patients may have a personal history of previous sigmoid volvulus episodes in 30-40% of cases 1, 3

Signs of peritonitis or shock suggest colonic necrosis or perforation, and absence of peritoneal signs does not rule out bowel ischemia 1, 3
Patients may develop renal insufficiency due to vomiting and dehydration 1, 3

History may be unreliable in patients with neuropsychiatric issues, and abdominal examination may be difficult due to massive distension 1, 3

Without definitive surgical management, recurrence rates are extremely high (45-71%), as reported by the World Journal of Emergency Surgery and other sources 1, 3, 4

Chronic constipation with frequent laxative use is a common predisposing factor for sigmoid volvulus, along with anatomic predisposition (dolicho-sigmoid), particularly in elderly males 5, 6
The age and gender demographics of sigmoid volvulus align perfectly, preferentially affecting elderly males (age >70 in Western countries), with a mean age between 56-77 years 5, 7
Cecal volvulus is less likely in middle-aged to elderly males due to its typical presentation in younger females (age ≤60) 5
Chronic constipation and laxative use patterns are more characteristic of sigmoid volvulus than cecal volvulus 5, 6

Dolicho-sigmoid (elongated sigmoid colon on a narrow mesenteric base) is the most commonly cited predisposing factor for sigmoid volvulus 5, 6
The combination of a high and wide meso-sigmoid with a narrow root predisposes to sigmoid volvulus 6
Chronic constipation and frequent laxative use contribute to the development of this anatomic predisposition 5, 6

Plain abdominal radiographs are recommended as first-line imaging, looking for the classic "coffee bean sign" 7
Abdominal CT is the gold standard, revealing dilated colon with air/fluid level and the "whirl sign" representing twisted colon and mesentery 7
Urgent upfront surgery is mandatory if septic shock, bowel ischemia, or perforation is present 7