Abstract
Few data are available on outcomes of percutaneous coronary intervention (PCI) for coronary chronic total occlusions (CTO) in very elderly patients in the drug-eluting stent (DES) era. We aimed to investigate long-term survival in a single-centre cohort of elderly patients following CTO PCI using DES. A total of 2,002 consecutive patients who underwent PCI of a CTO at our centre between January 2005 and December 2013 were followed for a median of 2.6 years (interquartile range 1.1-3.1 years). Four hundred and nine (409) patients were older than 75 years. The absolute reduction in all-cause mortality by successful CTO PCI was numerically greater in elderly patients as compared to younger patients (22.1% vs. 7.2% at three years). In multivariate models, successful CTO PCI was significantly associated with improved survival in both elderly (adjusted hazard ratio [HR] 0.58, 95% confidence interval [CI]: 0.39 to 0.87; p=0.009) and younger patients (adjusted HR 0.59, 95% CI: 0.40 to 0.86; p=0.006). In the DES era, elderly patients (≥75 years) derive a similar survival benefit from successful CTO PCI to younger patients. These findings suggest that CTO PCI, when indicated, should not be withheld from the elderly.
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