Intra- and Postprocedural Management of Coronary Artery Perforation During Percutaneous Coronary Intervention.

Little is known regarding the postprocedural management of coronary artery perforation (CAP). The characteristics, outcomes, and management of 115 CAP cases among 13,453 patients undergoing percutaneous coronary intervention (PCI) between 2001 and 2017 at Miyazaki Medical Association Hospital were analyzed retrospectively. The incidence of CAP was 0.85% (25 [0.19%] coronary ruptures [CRs], 90 [0.67%] wire perforations [WPs]). The most prevalent causes of CRs and WPs were rotational atherectomy (36.0%) and polymer-jacketed wires (41.1%), respectively. Fifty-two percent of CRs were treated using prolonged balloon inflation, whereas 50% of WPs were treated through embolization. Immediate and delayed cardiac tamponade (CT) occurred in 20% and 24% of CRs, respectively, and in 2.2% and 10% of WPs, respectively. The mean (±SD) right atrial pressure (RAP) during delayed CT in the CR and WP groups was 16.0±1.2 and 14.0±3.0 mmHg, respectively. New-onset atrial fibrillation developed in 24.0% and 11.1% of patients in the CR and WP groups, respectively, whereas late-onset coronary artery aneurysm (CAA) occurred in 24.0% and 0% of patients, respectively. One-year mortality rates in patients with immediate and delayed CT were 28.6% and 20.0%, respectively. Special attention should be paid to delayed CT, new-onset atrial fibrillation, and late-onset CAA after CAP treatment. Continuous monitoring of RAP after CAP during PCI may be useful for the early detection of delayed CT.