ABSTRACT
Various complications may occur during percutaneous coronary interventions (PCIs). These may be related to the devices used during the procedure or to the intervention itself. Despite the increasing procedural complexity and higher-risk profile of patients treated with PCI over the years, there has been a marked reduction of related in-hospital myocardial infarction (MI) and mortality rates, as well as for the need of emergency coronary artery bypass graft (CABG) surgery. Stents are currently used in 93"-96" of PCIs. Failure to deliver a stent to the target site occurs in 3.9"-8.3" of the procedures, mostly due to excessive tortuosity, and/ or calcification of the target lesion and/or of the proximal vessel segments. Stent loss is associated with a high rate of adverse events. These outcomes may or may not be directly related to stent embolization. Percutaneous treatments of lost coronary stents include retrieval, exclusion from circulation, or deployment at the embolization site.
