Serial coronary angiograms of a patient before and after an inferior wall myocardial infarction document a flush occlusion of a posterolateral arterial branch of the right coronary artery. The case illustrates that one-time angiography may fail to demonstrate complete occlusion and loss of a branch coronary artery. This sequence of events may explain the apparently normal coronary arteriograms in patients with documented inferior myocardial infarctions.
Barresi V, Manchester JH, Shelburne JC. Angiographic Evidence of Flush Coronary Occlusion. JAMA. 1973;225(9):1111-1112. doi:10.1001/jama.1973.03220370049014