Extreme protective action of coronary collateral vessels in complete occlusion of the left main coronary artery

1982 ◽  
Vol 50 (6) ◽  
pp. 1441-1442 ◽  
Author(s):  
Paolo Esente ◽  
Peter L. Arquin ◽  
Alessandro Giambartolomei ◽  
Goffredo G. Gensini
Keyword(s):  
Coronary Artery ◽  
Left Main Coronary Artery ◽  
Protective Action ◽  
Left Main ◽  
Complete Occlusion ◽  
Coronary Collateral ◽  
Collateral Vessels

Endothelial function in well-developed canine coronary collateral vessels

1993 ◽  
Vol 264 (2) ◽  
pp. H567-H572 ◽  
Author(s):  
J. Altman ◽  
D. Dulas ◽  
T. Pavek ◽  
D. D. Laxson ◽  
D. C. Homans ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Left Main Coronary Artery ◽  
Arterial System ◽  
Collateral Flow ◽  
Retrograde Flow ◽  
Left Main ◽  
Coronary Collateral Circulation ◽  
Coronary Collateral ◽  
Collateral Vessels ◽  
Coronary Collateral Blood Flow

This study examined responses of coronary collateral blood flow to endothelial-dependent vasodilators. Studies were performed in 13 dogs 4-6 mo after embolic occlusion of the left anterior descending coronary artery (LAD). Collateral flow was determined as the sum of retrograde flow from the cannulated LAD, and continuing tissue flow was measured with microspheres administered during the retrograde flow collection. Agonists were introduced into the left main coronary artery to reach collaterals arising from the left coronary arterial system. The endothelial-dependent vasodilators acetylcholine and bradykinin caused 21 +/- 7 and 25 +/- 8% increases of collateral flow, respectively (each P < 0.05). This was not different from the 28 +/- 8% increase in collateral flow produced by nitroglycerin. To determine whether vasodilator prostaglandins contributed to the increased collateral flow, studies were performed after cyclooxygenase blockade with indomethacin (5 mg/kg iv). Indomethacin caused a 30 +/- 9% decrease of retrograde flow during basal conditions but did not blunt the maximum collateral flow rates produced by acetylcholine, bradykinin, or nitroglycerin. These data demonstrate intact endothelial-dependent vasodilator mechanisms in the well-developed coronary collateral circulation.

scholarly journals Complete Occlusion of the Left Main Coronary Artery Trunk

2012 ◽  
Vol 51 (18) ◽  
pp. 2669-2669
Author(s):  
Reiko Mizuno ◽  
Shinichi Fujimoto ◽  
Yoshihiko Saito ◽  
Yasuyuki Okamoto
Keyword(s):  
Coronary Artery ◽  
Left Main Coronary Artery ◽  
Left Main ◽  
Complete Occlusion

Survival from Acute Occlusion of the Left Main Coronary Artery with Preexisting Collateral Vessels—A Case Report

Angiology ◽  
1991 ◽  
Vol 42 (11) ◽  
pp. 935-939 ◽  
Author(s):  
Kan Takayanagi ◽  
Tsutomu Satoh ◽  
Teruo Inoue ◽  
Yoshihiko Sakai ◽  
Shigenori Morooka ◽  
...  
Keyword(s):  
Case Report ◽  
Coronary Artery ◽  
Left Main Coronary Artery ◽  
Left Main ◽  
Acute Occlusion ◽  
Collateral Vessels

Stress Thallium-201 Myocardial Scintigraphy in Patients With Complete Occlusion of the Left Main Coronary Artery

CHEST Journal ◽  
2001 ◽  
Vol 120 (4) ◽  
pp. 1409-1412 ◽  
Author(s):  
Takashi Hatori ◽  
Takuji Toyama ◽  
Tomoyuki Yokoyama ◽  
Masashi Arai ◽  
Masahiko Kurabayashi ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Left Main Coronary Artery ◽  
Myocardial Scintigraphy ◽  
Thallium 201 ◽  
Left Main ◽  
Complete Occlusion
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