Group A

Histological alterations (15 days of catheterization)

1

Extensive erosion on the endothelium and discreet inflammatory infiltrate

2

Extensive erosion in the endothelium and discreet inflammatory infiltrate (erythrocyte, neutrophil and rare lymphocytes)

3

Mild erosion of the endothelium and mild inflammatory infiltrate

4

Mild erosion of the endothelium with hemorrhage and discreet inflammatory infiltrate

5

Mild erosion of the endothelium and mild inflammatory infiltrate

6

Mild erosion of the endothelium and mild inflammatory infiltrate

7

Mild erosion of the endothelium and mild inflammatory infiltrate