ATS
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to Personal Folders
Right arrow Download to citation manager
Right arrow Author home page(s):
Robert A. Guyton
Right arrow Permission Requests
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Guyton, R. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Guyton, R. A.

Ann Thorac Surg 1975;20:52-55
© 1975 The Society of Thoracic Surgeons

Articles

Subendocardial S-T Segment Changes During Acute Coronary Occlusion

Robert A. Guyton, M.D.

From the Clinic of Surgery, National Heart and Lung Institute, National Institutes of Health, Bethesda, Md. 20014.

Subendocardial ischemia during coronary occlusion in dogs was studied using S-T segment elevations in unipolar subendocardial electrodes. Alterations in heart rate or cardiac output caused quantitatively similar changes in subendocardial and epicardial S-T elevation. Increasing blood pressure from 75 to 100 or 75 to 125 mm Hg caused a smaller reduction in subendocardial than in epicardial S-T elevation (p < 0.01). In this situation, therefore, subendocardial ischemia tends to be maintained while epicardial ischemia is reduced by higher arterial pressures. Hemodynamic manipulations can cause quantitatively different changes in subendocardial and epicardial S-T segment elevation.






HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
ANN THORAC SURG ASIAN CARDIOVASC THORAC ANN EUR J CARDIOTHORAC SURG
J THORAC CARDIOVASC SURG ICVTS ALL CTSNet JOURNALS
Copyright © 1975 by The Society of Thoracic Surgeons.