A Patient With Unstable Angina and Without Abnormal Electrocardiographic Findings and Total Occlusion of the Left Anterior Descending Coronary Artery

Coronary collaterals can be visualized on coronary angiography and they potentially offer an important alternative source of blood supply when the original vessel fails to provide sufficient blood. We report a patient with unstable angina and normal electrocardiography and total occlusion of the left anterior descending coronary artery.