TY - JOUR
T1 - Right ventricular infarction
T2 - Role of the moderator band artery in determining infarct size
AU - Haupt, H. M.
AU - Hutchins, G. M.
AU - Moore, G. W.
PY - 1983
Y1 - 1983
N2 - We studied 19 patients with proximal right coronary artery occlusions associated with acute myocardial infarcts less then 30 days old. Right ventricular infarct size, determined as a percentage of right ventricular surface area, ranged from 0% to 29%. Correlation of 24 variables measuring infarct size, chamber size and coronary artery disease failed to demonstrate a significant correlation with the extent of right ventricle infarction. However, estimates of the degree of obstruction to potential collateral flow into the right coronary arterial system from the left anterior descending coronary artery, especially through the moderator band artery, showed a significant positive correlation with infarct size (p 25%) right ventricle infarction, four had significant (> 75%) obstruction of the left anterior descending system, resulting in potentially impaired collateral blood flow; the other patient had normal coronary arteries and embolic occlusion of the proximal right coronary artery with contraction band necrosis. The study suggests that collateral flow to the right ventricular myocardium, especially through the moderator band artery, protects against massive infarction in the presence of proximal right coronary artery occlusion.
AB - We studied 19 patients with proximal right coronary artery occlusions associated with acute myocardial infarcts less then 30 days old. Right ventricular infarct size, determined as a percentage of right ventricular surface area, ranged from 0% to 29%. Correlation of 24 variables measuring infarct size, chamber size and coronary artery disease failed to demonstrate a significant correlation with the extent of right ventricle infarction. However, estimates of the degree of obstruction to potential collateral flow into the right coronary arterial system from the left anterior descending coronary artery, especially through the moderator band artery, showed a significant positive correlation with infarct size (p 25%) right ventricle infarction, four had significant (> 75%) obstruction of the left anterior descending system, resulting in potentially impaired collateral blood flow; the other patient had normal coronary arteries and embolic occlusion of the proximal right coronary artery with contraction band necrosis. The study suggests that collateral flow to the right ventricular myocardium, especially through the moderator band artery, protects against massive infarction in the presence of proximal right coronary artery occlusion.
UR - http://www.scopus.com/inward/record.url?scp=0020627875&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0020627875&partnerID=8YFLogxK
M3 - Article
C2 - 6851021
AN - SCOPUS:0020627875
SN - 0009-7322
VL - 67
SP - 1268
EP - 1272
JO - Circulation
JF - Circulation
IS - 6 I
ER -