Acute sigmoid volvulus is commonest in the Western world among the elderly and the institutionalised. Given the significant co-morbidity in this population and the perceived risks associated with definitive surgery, many surgeons elect to manage this condition conservatively with colonoscopic decompression alone. Non-operative management of acute sigmoid volvulus potentially obviates surgical morbidity in high-risk elderly and frail patients with distended, unprepared bowel. However, because recurrence rates (55-90%) and mortality rates (40%) are high, conservative treatment should be used predominantly to move patients from emergency surgery status to semi-elective surgery status.1-8 Indeed, following initial resuscitation of patients with acute sigmoid volvulus, including an attempt to detort the volvulus colonoscopically where appropriate, definitive surgery may prevent the significant morbidity and mortality associated with subsequent episodes of volvulus. We reviewed our unit's experience with non-operative and operative management of this condition.
Patients and MethodsThe records of all patients who underwent emergency nonoperative or operative treatment for acute sigmoid volvulus in the Department of Surgery, Mayo General Hospital, during an 11-year period between January 1996 and December 2006, were reviewed retrospectively. The age, gender, co-morbid problems, ASA score, clinical presentation, indication, nonoperative or operative procedures, mortality, morbidity, hospitalisation period, and recurrence rates were considered.Patients were identified from the operating theatre register and admissions office records. PATIENTS AND METHODS We reviewed our unit's experience with non-operative and operative management of this condition. A total of 27 patients were treated for acute sigmoid volvulus between 1996 and 2006. In total, there were 62 separate hospital admissions. RESULTS Eleven patients were managed with colonoscopic decompression alone. The overall mortality rate for non-operative management was 36.4% (4 of 11 patients). Fifteen patients had operative management (five semi-elective following decompression, 10 emergency). There was no mortality in the semi-elective cohort and one in the emergency surgery group. The overall mortality for surgery was 6% (1 of 15). Five of the seven patients managed with colonoscopic decompression alone who survived were subsequently re-admitted with sigmoid volvulus (a 71.4% recurrence rate). The six deaths in our overall series each occurred in patients with established gangrene of the bowel. With early surgical intervention before the onset of gangrene, however, good outcomes may be achieved, even in patients apparently unsuitable for elective surgery. Eight of the 15 operatively managed patients were considered to be ASA (American Society of Anesthesiologists) grade 4. There was no postoperative mortality in this group. CONCLUSIONS Given the high rate of recurrence of sigmoid volvulus after initial successful non-operative management and the attendant risks of mor...