In longstanding cases, bowel rupture due to pressure necrosis or gas distension may occur and the prognosis for these horses is grave. The prognosis is good in horses that have undergone surgery early before cardiovascular deterioration has occurred. | In longstanding cases, bowel rupture due to pressure necrosis or gas distension may occur and the prognosis for these horses is grave. The prognosis is good in horses that have undergone surgery early before cardiovascular deterioration has occurred. |