Acute myocardial infarction secondary to a spontaneous right coronary artery dissection resulting from a sinus of valsalva aneurysm.

We describe a case of a female aged 55 years, presenting with an acute inferior ST-elevation myocardial infarction. The coronary ischaemia has resulted from a spontaneous right coronary artery dissection due to a right coronary cusp sinus of valsalva aneurysm (SVA). Sinus of valsalva aneurysm is a rare, often congenital, cardiac condition. The SVA rupture may lead to acute haemodynamic instability; therefore, recognition of the condition is important, generally requiring definitive surgical intervention. Right coronary artery ischaemia may result commonly from osteal compression by the SVA, however has never been previously described to occur from spontaneous coronary dissection.