Etiology of sudden cardiac arrest: Literature review and proposal for an intensive care unit study protocol João Cravo; Daniel Inácio Cazeiro; Oana Moldovan; Nuno Cortez-Dias; Doroteia Silva;

Prediction of response to cardiac resynchronization therapy using electrocardiographic criteria: A systematic review Paulo Dias Costa; João Pedro Bessa; Mariana Canelas Pais; Daniela Ferreira-Santos; Fernando Montenegro Sá; Matilde Monteiro-Soares; António Hipólito-Reis; Mário Martins Oliveira; Pedro Pereira Rodrigues;

Fluoroless cavotricuspid isthmus ablation of typical atrial flutter achieves success with shorter radiofrequency and procedural times Sofia Jacint; Guilherme Portugal; Hélder Santos; Pedro Silva Cunha; Bruno Valente; Ana Lousinha; Ana Sofia Delgado; Rui Cruz Ferreira; Mário Martins Oliveira;