melaena

1.Serious person can have haematemesis, melaena, dehydrate even, and toxic reach shock to wait.

严重者可有呕血、黑粪、甚至失水、及中毒及休克。

2.The clinical expression of this ill model digests haemorrhage to go up, have haematemesis and melaena;

本病典型的临床表现为上消化道出血，有呕血和黑粪；