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Table 2 Histology Grading

From: Endoscopic Saphenous harvesting with an Open CO2 System (ESOS) trial for coronary artery bypass grafting surgery: study protocol for a randomized controlled trial

The histological structures to be evaluated are the:

The numeric grading system estimates the percent disruption of each histological structure and will be scored according to the following scale [2]:

endothelial layer

0

Intact or not disruption

elastic lamina

1

< 10%

medial smooth muscle and connective tissue

2

10-25%

adventitial connective tissue.

3

25-50%

 

4

> 50%