Anal atresia
Introduction
Introduction to anal membrane atresia Anal membrane atresia, also known as anal membranous atresia, is due to the unruptured anal membrane, the anus and rectum are completely separated by a film, and can not defecate congenital malformations. Due to late developmental disorders in the embryo, the anal membrane of the primitive anus and rectum is abnormally absorbed. The clinical manifestations of this disease are no meconium discharge after birth, crying, vomiting, abdominal distension and so on. Surgical treatment should be performed early after diagnosis. Avoid serious complications. Anal membrane atresia is a low-level malformation, which is a common type, due to late developmental disorders of the embryo, and abnormal absorption of the anal membrane at the end of the primitive anus and rectum. Sometimes it can be combined with the subcutaneous sacral canal that goes to the anus. The anorectal rectum is basically normal, and generally does not incorporate other malformations. After the child was born, there was no meconium discharge, crying, vomiting, and bloating. There is a significant depression in the normal anal position, and the anal canal is covered by a layer of septum. The diaphragm is sometimes thin enough to see deep blue meconium remaining in the anorectal rectum. When the sick child is crying, the diaphragm is obviously bulging outward, and the finger touches with a significant impact, which stimulates the sphincter contraction of the perianal. basic knowledge The proportion of illness: 0.02% Susceptible people: seen in newborns Mode of infection: non-infectious Complications: intestinal obstruction
Cause
Cause of anal membrane atresia
Anal anal inflammation (45%):
Chronic inflammation or ulcer adhesion scar formation contracture is a common cause of anal normal contraction if there is inflammation or wound contraction is more tight and easy to cause stenosis.
Local damage to the anal canal (35%):
Suffering from trauma, burns, burns, drug corrosion, perineal laceration during labor, anal surgery (such as excessive skin removal during internal and external hemorrhoidectomy or injection and ligation of internal hemorrhoids and anal fistula surgery) A scar is formed to form an anal stenosis.
Prevention
Anal membrane atresia prevention
Treatment should be done early after diagnosis to avoid serious complications.
Complication
Anal membrane atresia Complications, intestinal obstruction
1. Intestinal obstruction.
2. Intestinal inflammation.
Symptom
Anal membrane atresia common symptoms abdominal swelling in the amniotic fluid meconium
It belongs to congenital malformation. The child has no meconium excretion after birth, crying, vomiting, abdominal distension, obvious depression in the normal anus position, the anal canal is covered by a membrane, the diaphragm is sometimes thin, and it can be seen through the anal canal. Deep blue meconium in the rectum, when the sick child is crying, the diaphragm bulges out obviously, the finger touches a significant impact, and stimulates the sphincter contraction of the perianal.
Examine
Anal membrane atresia
1. Puncture examination.
2. Rectal examination: rectal examination is a simple and easy-to-use clinical examination method for doctors to use a finger to reach the patient's anus. The rectal examination does not require any auxiliary equipment.
Diagnosis
Diagnosis of anal membrane atresia No meconium is discharged, and the anus is covered with a film. Puncture examination, the thickness of the membrane is more than 0.5 cm, and the anus area has obvious impact when the patient is crying.
