The authors proposed a development of a semiquantitative morphological assessment to intestinal mucosa edema, congestion, hyperemia, hemorrhage, inflammatory infiltration, cellular degeneration, necrosis, epithelial detachment and also a quantitative morphological assessment to evaluate mucosal loss (ML) percentage and mucosal crypt:interstitium ratio (C:I) in pigs submitted to severe hypotension. The semiquantitative parameters edema, congestion, hyperemia, hemorrhage, inflammatory infiltration, cellular degeneration, necrosis were evaluated by two independent examiners and classified in a specific scale from 0 to 3, according to Çetin et al., (1995). The epithelial detachment was evaluated by two independent examiners and registered in a specific scale from 0 to 5, according to Chiu et al., (1970) and Kaplan et al., (2007). The quantitative morphological assessment to ML percentage and mucosal C:I was achieved using an ocular 1000 micrometric reticule divisions across 10 randomly selected microscopic fields in each section, using a10x objective, adapted from Faleiros et al., (2001).