Diagnosis and differentiation of intestinal bleeding symptoms

Hematemesis, melena, obvious bleeding during defecation, etc.

1. Hematemesis and

intestinal bleeding may stimulate intestinal spasm, resulting in blood reflux to the stomach. With the continuous contraction of stomach smooth muscle, blood can be discharged from the mouth, i.e. hematemesis.

2. Melena and

intestinal bleeding will cause trivalent iron ions in the blood to be decomposed into divalent iron ions by digestive juice, which is easy to change the color of stool. All stools are black or tarry.

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