The first clinical manifestation of neonatal necrotizing enterocolitis is usually

Neonatal necrotizing enterocolitis is characterized by abdominal distension, vomiting, diarrhea and bloody stool. Abdominal X-ray plain film showed dynamic intestinal obstruction, pneumatosis of intestinal wall and pneumatosis of portal vein. Pathologically, it showed necrosis of small intestine and colon. Premature infants and very low birth weight infants are more common.

Abdominal distension is often the first symptom, followed by delayed gastric emptying and gastric retention; Then there is abdominal distension, progressive aggravation and intestinal type. The bowel sounds weaken or disappear.