Percutaneous Coronary Intervention-Related Iatrogenic Fistula in Acute Coronary Syndrome.

Iatrogenic coronary artery fistula (CAF) can occur following acute myocardial infarction, percutaneous coronary intervention (PCI) procedures, and heart surgery. Iatrogenic CAF linked to PCI has a low incidence rate. Early diagnosis and treatment are crucial when an iatrogenic fistula develops, as it may lead to cardiac tamponade, myocardial infarction, or death. In this report, we present a case of iatrogenic CAF secondary to coronary perforation caused by guidewire-induced trauma, followed by stent implantation and balloon inflation in the context of acute coronary syndrome (ACS). It was successfully managed through prolonged balloon inflation within the previously implanted stent just prior to the rupture zone.