Clinical outcomes in nonagenarians undergoing a percutaneous coronary intervention: data from the ORPKI Polish National Registry 2014-2016.

BACKGROUND: Despite an increase in the proportion of nonagenarians in demographic structure, there is still a paucity of data on the utilization and outcome of percutaneous coronary interventions (PCIs) in this population. Also, very old patients are under-represented in randomized clinical trials and their treatment is still an emerging challenge. Thus, we sought to compare patient profiles and periprocedural outcomes of PCI in nonagenarians and patients younger than 90 years. PATIENTS AND METHODS: Data were based on the Polish National Registry of PCI (ORPKI). A total of 651 080 consecutive patients with stable angina (SA) (n=260 920) or acute coronary syndrome (ACS) (n=390 160) undergoing PCI with at least one stent implanted were included. Patients were stratified according to age (<90 and ≥90 years). RESULTS: Of all included patients, 4413 (0.7%) were older than or equal to 90 years. A similar rate of periprocedural complications was observed in both groups. However, cardiac arrest during both angiography and PCI occurred more often in nonagenarians (0.21 vs. 0.83%; 0.42 vs. 1.07%, respectively, for both P=0.001). Similarly, periprocedural mortality was higher in patients older than or equal to 90 years (0.27 vs. 1.88%; P=0.001). There were no differences in periprocedural outcomes between groups in the SA setting. However, a higher rate of periprocedural cardiac arrest [1971 (0.51%) vs. 43 (1.15%); P=0.001] and mortality [1622 (0.42%) vs. 83 (2.2%); P=0.001] were observed in nonagenarians compared with younger counterparts admitted with ACS. CONCLUSION: Nonagenarians undergoing PCI because of SA may have similar outcomes as patients younger than 90 years. In ACS presentation, they may have worse outcomes than younger counterparts.