Successful Management of Periprocedural Coronary Extravasation Using Liquid Embolic Agent n-Hexyl-Cyanoacrylate

Although the complication rate of percutaneous coronary intervention is low, coronary artery perforation occurs in 0.2-0.5% of cases. Intracoronary glue injection is not an established treatment option, with only a few cases reported in the literature and no reported use of n-hexyl-cyanoacrylate. Case report: A 75-year-old man was diagnosed with a non-ST elevation myocardial infarction. Since there was no acute chest pain and no signs of ongoing ischemia on the ECG, diagnostic coronary angiography was performed the day after arrival. The coronary angiography revealed a proximal subocclusion of the left anterior descending artery. The lesion was successfully predilated, and a drug-eluting 5 × 28 mm stent was implanted, occluding two small diagonal branches. While attempting to create a gap in the stent to revascularize the occluded branch, a side branch perforation was detected. This was successfully treated by occluding the branch with an intracoronary cyanoacrylate glue injection. No signs of cardiac tamponade were observed during follow-up after the procedure, and the patient was soon discharged to rehabilitation. Conclusions: Coronary artery perforation is a serious complication of percutaneous coronary intervention. Intracoronary glue injection and embolization of the perforated side branch appear to be a safe and effective technique for managing this complication.