Reproducibility and validity of the Portuguese Edmonton Frail Scale version in cardiac surgery patients Maria de Lurdes Castro; Marta Alves; Ana Martins; Ana Luísa Papoila; Maria-Amália Botelho; José Fragata;

Mechanical circulatory support in children: Strategies, challenges and future directions Susana Abreu; Catarina Brandão; Conceição Trigo; Rui Rodrigues; Fátima Pinto; José Fragata;

Surgical aortic valve replacement in octogenarians: Single-center perioperative outcomes and five-year survival Tiago R. Velho; João Gonçalves; Rafael Maniés Pereira; Ricardo Ferreira; André Sena; Nádia Junqueira; Eurídice Ângelo; Nuno Carvalho Guerra; Mário Mendes; Ricardo Arruda Pereira; Ângelo Nobre;