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;

Suspicion and referral of patients with transthyretin amyloid cardiomyopathy: Recommendations by a Portuguese multidisciplinary expert panel Dulce Brito; João Agostinho; Carlos Aguiar; Sílvia Aguiar Rosa; Nuno Cardim; Cândida Fonseca; Nuno Marques; Pedro Moraes Sarmento; Patrícia Rodrigues; Jonathan Santos; Maria João Vidigal Ferreira; Olga Azevedo;

Quality indicators in atrial fibrillation ablation (RIQAFA). A national registry from the Portuguese Association of Arrhythmology, Pacing and Electrophysiology (APAPE) Pedro Carmo; Dinis Mesquita; Nuno Cabanelas; Ana Rita Marinheiro; Sílvia Nunes; Duarte Chambel; Francisco Moscoso Costa; Victor Sanfins; Leonor Parreira;