Nelson RL, et al. The precise role for these drugs in the treatment of chronic anal fissure remains to be seen based upon future studies. General anaesthesia, sphincterotomy, and the application of topical glyceryl trinitrate GTN ointment all lower resting anal pressure and simultaneously increase the local tissue perfusion in anal fissure. Anal incontinence can include inability to control gas, mild fecal soiling, or loss of solid stool. N Engl J Med. Surgical operations involve a general anaesthetic and can be painful postoperatively. Bethanacol, a parasympathomimetic drug, has also been shown to lower pressures in the anal canal and by the same token shows similar promise.
What is an anal fissure?An anal fissure is a tear in the lining of the lower rectum (anal canal) that causes pain during bowel movements. Anal fissures don't lead to. Information about anal fissure surgery. Read our content about what happens when you have anal fissure surgery and how to recover afterwards. Anal fissure — Comprehensive overview covers symptoms, causes, treatment of this often painful tear.