Hemoptysis caused by saphenous vein graft perforation during percutaneous coronary intervention.

Percutaneous coronary intervention carries the risk of coronary artery perforation, which may lead to serious adverse effects such as cardiac tamponade, myocardial infarction, and even death. We describe a patient who developed hemoptysis immediately after saphenous vein graft rupture, which is a rare complication during coronary intervention. Stenting using a covered stent, along with simultaneous administration of protamine, helped seal the vein graft perforation and stop the hemoptysis.