A large proportion of recurrent coronary events after PCI arise beyond the original treatment site. Findings published in Clinical Cardiology examined how event location relates to PCI effectiveness in stable coronary artery disease (CAD).

This retrospective cohort included 562 adults who underwent PCI using either conventional or drug-eluting stents. Angiography determined whether new coronary events occurred at or away from the previously treated coronary segment.

A total of 232 patients (41.3%) experienced recurrent coronary events. Among these, 55.8% arose at the treated site and 44.2% occurred elsewhere. Within treated-site events, 54.1% were associated with conventional stents and 61.1% with drug-eluting stents, with no significant difference (p = 0.363).

These results indicate that recurrent CAD progression frequently develops in previously untreated coronary areas. A broader patient-level evaluation, rather than isolated lesion-level outcomes, may better reflect PCI performance and long-term patient risk.