Left main stem rupture caused by methicillin resistant Staphylococcus aureus infection of left main stent treated by covered stenting.

Coronary artery infection after angioplasty or stent implantation is a rare and dreaded complication of percutaneous coronary intervention. 80% of the cases are due to Staphylococcus aureus. About half the cases lead to rupture or perforation of the coronary artery while the other half presents as abscesses or aneurysms. Surgical treatment is the conventional therapeutic modality but it carries a high mortality. We report a case of a high risk patient who had methicillin resistant Staphylococcus aureus infection of left main stem stent leading to rupture and pseudoaneurysm formation that is successfully treated with stent graft.