Invasively managed acute coronary syndrome in octogenarian patients: a retrospective cohort study Adrián Jerónimo; Zaira Gómez-Álvarez; Teresa Romero-Delgado; Carlos Ferrera; Breda Hennessey; Francisco J. Noriega; Rodrigo Fernández-Jiménez; Juan C. Gómez-Polo; Antonio I. Fernández-Ortiz; Ana Viana-Tejedor;