1. Transesophageal echocardiographic monitoring of myocardial ischemia during vascular surgery 
Bruce L. Gewertz, M.D., Paul C. Kremser, M.D., Christopher K. Zarins, M.D., John S. Smith, M.D., John E. Ellis, M.D., Steven B. Feinstein, M.D., Michael F. Roizen, M.D. 
Journal of Vascular Surgery 
Volume 5, Issue 4, Pages (April 1987)
DOI: / (87)90228-X
Copyright © 1987 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

2. Fig. 1
Static images of end-diastolic (A) and end-systolic (B) ventricular cross-sections before and after suprarenal aortic clamping in patient treated with nitroglycerin. Cardiac function was poor before clamping as demonstrated by poor ventricular wall motion and decreased ejection fraction (note large residual ventricular volume at end-systole, preclamp). Cardiac function is actually improved after aortic clamping as nitroglycerin infusion is begun, decreasing preload. Note improved contractility of ventricular wall, decreased end-diastolic volume, and increased ejection fraction (smaller residual ventricular volume at end-systole, postclamp).
Journal of Vascular Surgery 1987 5, DOI: ( / (87)90228-X)
Copyright © 1987 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

3. Fig. 2
Digitized presentations of left ventricular cross sections in a patient studied immediately before (A) and after (B) aortic root injection of sonicated microbubbles of contrast. Note marked increase in echogenicity of myocardial segments and homogenous perfusion of ventricular free wall.
Journal of Vascular Surgery 1987 5, DOI: ( / (87)90228-X)
Copyright © 1987 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions

4. Fig. 3
Left ventricular cross sections before (A) and after (B) infrarenal aortic clamping. Although A is end-diastolic view and B is end-systolic, homogenous perfusion is evident in this patient without segmental wall motion abnormalities.
Journal of Vascular Surgery 1987 5, DOI: ( / (87)90228-X)
Copyright © 1987 Society for Vascular Surgery and North American Chapter, International Society for Cardiovascular Surgery Terms and Conditions