Anal canal dilation

Anal canal dilatation is used for the surgical treatment of anal fissure. Anal fissure is a small ulcer in the skin layer of the anal canal under the tooth line. Its direction is parallel to the longitudinal axis of the anal canal and is about 0.5 to 1 cm long. It is fusiform or elliptical, often causing severe pain and difficulty in healing. The majority of anal fissures occur in the midline of the anal canal, followed by the anterior middle (more common in women), and the side is extremely rare. If there is an anal fissure on the side, or there are multiple clefts, it should be thought that it may be an early manifestation of intestinal inflammatory diseases (such as Crohn's disease, ulcerative colitis and tuberculosis), especially for Crohn's disease. Acute anal fissure has a short onset period, with reddish color, shallow bottom, fresh cracks and no scar formation. Chronic anal fissure has a long course, repeated attacks, and the bottom is not neat. The upper end often has a hypertrophy nipple, and the lower end often has a sentinel sputum. For the anal fissure "triple sign." In the advanced stage, it can also be complicated by perianal abscess and subcutaneous anal fistula. Treatment of diseases: anal canal, rectum, colon stenosis Indication Anal canal dilatation is applicable to: 1. Simple acute anal fissure, no other comorbidities. 2. Chronic anal fissure is not associated with polyps and outposts. Contraindications It is not advisable to have an anal canal dilatation with acute infection. Preoperative preparation 1. Before the operation, the net is large and urinating. 2. Shave the perianal if necessary. Surgical procedure 1. Disinfect the intestine cavity under anesthesia, apply the lubricant to the finger, first insert the right finger into the anus, and repeat the arc-shaped expansion in a clockwise and counterclockwise direction to make the anal canal have an adaptation process. 2. Use two fingers to insert into the anus, repeatedly expand the anus in a curved shape, loosen the sphincter while expanding, gradually extend into the middle finger, and expand until the anal sphincter has no sense of urgency. The general expansion takes about 5 minutes. 3. After the expansion, the anal canal is filled with analgesic anti-inflammatory cream or anal suppository. complication 1. If the disinfection is not strict, or use the violence to expand the anus, it can also send blood, perianal abscess, sputum prolapse and so on. 2. The recurrence rate can reach 10% to 16%.