An elderly man presented with sigmoid volvulus, is successfully detorsed. What is the next step to be done?

(A) Observation for recurrence # Sigmoid volvulus is the most common form of volvulus of the gastrointestinal tract and is responsible for 8% of all intestinal obstructions.> Decompression may be achieved with the introduction of a stiff tube per the rectum, aided by endoscopy or fluoroscopy.> If rectal decompression is instituted, the patient should be observed for persistent abdominal pain and bloodstained stools, signs that may herald ischemia and indicate the need for surgical intervention.> Surgery is reserved for patients in whom tube decompression fails or for those in whom signs of ischemia are suggested.