1. Glucagon potentiates intestinal reperfusion injury
Elizabeth T. Clark, MD, Bruce L. Gewertz, MD 
Journal of Vascular Surgery 
Volume 11, Issue 2, Pages (February 1990)
DOI: / (90)90270-K
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

2. Fig. 1
Experiments were performed in denervated isoperfused rat intestinal preparations.
Journal of Vascular Surgery  , DOI: ( / (90)90270-K)
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

3. Fig. 2
Histologic grading system. Epithelial morphology of individual intestinal sections was evaluated in a blinded manner by use of a modification of the Chui system. (Original magnification × 25.)
Journal of Vascular Surgery  , DOI: ( / (90)90270-K)
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

4. Fig. 3
Effect of glucagon before ischemia on intestinal blood flow (IBF) and oxygen extraction (VO2).
Journal of Vascular Surgery  , DOI: ( / (90)90270-K)
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

5. Fig. 4 Histologic grades of experimental groups.
Journal of Vascular Surgery  , DOI: ( / (90)90270-K)
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

6. Fig. 5
Oxygen extraction (VO2) and histologic grade as related to glucagon concentration and duration of ischemia.
Journal of Vascular Surgery  , DOI: ( / (90)90270-K)
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

7. Fig. 6
Concept of an “ischemic threshold” that relates mucosal injury to both blood flow and duration of flow disturbance. Increases in ischemic mucosal injury (e.g., grades 4 and 5) require longer periods of flow interruption and may not occur if perfusion is maintained above an arbitrary limit.
Journal of Vascular Surgery  , DOI: ( / (90)90270-K)
Copyright © 1990 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions