Ielasi A, Brugaletta S, Silvestro A, Cequier A, Iñiguez A, Serra A, Hernandez-Antolin R, Mainar V, Valgimigli M, den Heijer P, Bethencourt A, Vazquez N, Serruys P, Sabate M, Tespili M. Everolimus-eluting stent versus bare-metal stent in elderly (≥75 years) versus non-elderly (<75 years) patients with ST-elevation myocardial infarction undergoing primary percutaneous coronary intervention: insights from the examination trial.
Int J Cardiol 2014;
179:73-8. [PMID:
25464418 DOI:
10.1016/j.ijcard.2014.10.038]
[Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Revised: 08/14/2014] [Accepted: 10/18/2014] [Indexed: 10/24/2022]
Abstract
BACKGROUND
The elderly (≥75years) constitute a high-risk subset of patients who continue to have a poorer prognosis than non-elderly (<75years). Whether the effects of everolimus-eluting stent (EES) in ST-segment elevation myocardial infarction (STEMI) are independent of age has not been reported. We investigated the outcomes following primary PCI (PPCI) with bare-metal stent (BMS) or EES in elderly vs. non-elderly STEMI patients.
METHODS
The EXAMINATION trial randomized 1498 STEMI patients to BMS or EES. The primary patient-oriented endpoint (POCE) was the combined of all-cause death, any-recurrent myocardial infarction (MI) and any-revascularization at 1-year. The secondary endpoint included the device-oriented combined (DOCE) of cardiac death, target-vessel MI and target-lesion revascularization. These endpoints and their components were compared between elderly and non-elderly.
RESULTS
Among patients enrolled in the trial, 245 (16.3%) were elderly, allocated to BMS (n=132) or EES (n=113), while the remaining 1253 (83.7%) were non-elderly, allocated to BMS (n=615) or EES (n=638). At 1-year, both the POCE and DOCE were observed more frequently in elderly vs. non-elderly group (24.5% vs. 10.5%, p<0.001 and 15.9% vs. 5.1%, p<0.001). Whereas in non-elderly, both POCE and DOCE were lower in EES vs. BMS (12.4% vs. 8.8%, p=0.03 and 6.7% vs. 3.6%, p=0.01), no differences were found in elderly, with a tendency for interaction between age and stent type for POCE (p=0.05). On multivariate analysis age ≥75 years was an independent predictor of POCE (HR 2.19 [95%CI 1.59-3.01], p<0.0001) and DOCE (HR 2.42 [95%CI 1.60-3.7], p<0.001) at 1-year.
CONCLUSIONS
In STEMI patients undergoing PPCI, advanced age (≥75 years) is associated with worse outcomes. The beneficial effects of EES over BMS tended to be age-dependent.
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