Abstract
This case report describes a 69-year-old male who presented with acute anterior myocardial infarction and was detected to have a hyperdominant right coronary artery (RCA) with a large posterior descending branch coursing from the posterior interventricular groove into the apical part of the anterior interventricular space and posterior left ventricular branch coursing in the left atrioventricular groove and supplying the entire free wall. Primary percutaneous intervention of the proximally occluded posterior descending artery resulted in resolution of ST-segment elevation in anterior and inferior leads and also revealed the large vascular territory of the RCA. The occurrence of superdominant RCA and intact left circumflex artery presenting with acute anterior wall myocardial infarction has not been described earlier. Precise morphological and physiological knowledge and evaluation of such a variation assists in opting for the best available therapeutic modality and prognosis.
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