Abstract
BACKGROUND: Perforation of artery causing bleeding is a rare but serious complication of percutaneous coronary intervention (PCI), with potentially life-threatening consequences. Prompt recognition and management are crucial, particularly in high-risk patients or complex procedures. Coils are essential tools for sealing perforated or ruptured vessels, preventing further haemorrhage and stabilising the patient. CASE DESCRIPTION: This report highlights three cases of perforated artery managed with coil embolization. The first case involved perforation of a small branch of the internal mammary artery, the second a ruptured aneurysm in the superior mesenteric artery and the third a distal branch perforation of the diagonal artery. All patients presented with significant haemorrhage, requiring urgent intervention. Coil embolization was successfully performed in all cases, achieving haemostasis and preventing further complications. CONCLUSION: Coil embolization is a lifesaving technique for managing perforated artery or ruptured aneurysm, emphasising the importance of timely diagnosis, technical expertise and the availability of advanced interventional tools. LEARNING POINTS: Perforation of artery causing bleeding is a rare but life-threatening complication of percutaneous coronary intervention.Coil embolization is a lifesaving technique for distal vessel perforations and aneurysmal ruptures.High-risk interventions demand careful planning, expertise and ready access to advanced tools such as coils.