Posterior leads detect myocardial injury during circumflex coronary artery occlusion

Regional myocardial blood flow during graded treadmill exercise following circumflex coronary artery occlusion in the dog.

We evaluated the functional capacity of the intercoronary collateral vasculature in response to graded exercise 2 weeks after acute circumflex coronary artery occlusion. Acute myocardial infarction was produced in 11 chronically instrumented awake dogs by abrupt occlusion of the left circumflex coronary artery. Two weeks later regional myocardial blood flow was measured at rest and during three...

Congenital Absence of Left Circumflex Coronary Artery

Congenital absence of left circumflex artery is a rare congenital anomaly of the coronary arteries. The prevalence of the anomaly in different studies ranges from 0.6% to 1.3%. Of these, 80% are benign and asymptomatic and 20% are clinically important. We report a 56-year-old man presented with acute resting chest pain who was diagnosed as having acute anterolateral infarction accompanied by el...

Circumflex coronary occlusion: classic ECG.

Regional Myocardial Function during Acute Coronary Artery Occlusion

Myocardial regional function during acute coronary artery occlusion was studied using ultrasonic dimension gauges in open-chest dogs. Three pairs of 2mm ultrasonic crystals were implanted 1 cm apart near the endocardium in an ischemic segment, a control segment, and a segment at the margin of the ischemic zone. In the ischemic segment, coronary artery occlusion resulted in prompt dyskinesis whi...

The effect of hypoglycemia on myocardial ischemic injury during acute experimental coronary artery occlusion.

To determine the effect of hypoglycemia on myocardial ischemic injury following coronary artery occlusion epicardial electrograms were recorded 15 minutes after two 20-minute coronary artery occlusions in seven anesthetized dogs. The first occlusion was a control (blood glucose 85 plus or minus 5(sd) mg per cent). Before the second occlusion hypoglycemia was induced (blood glucose 40 plus or mi...