Age of cardiac resynchronisation therapy; cardiac resynchronisation therapy in elderly

I have read the article entitled “Is cardiac resynchronisation therapy feasible, safe and beneficial in the very elderly?” by Olechowski et al. (1) with great interest, recently published in Journal of Geriatric Cardiology 2015; 12: 497-501. The investigators reported that implantation of CRT is feasible and safe in very elderly despite extensive co-morbidity (1).