Quadricuspid aortic valve with a hidden left ostium: Case report and literature review Filipe R. Soares; Carlos Branco; Gonçalo F. Coutinho; David Prieto; Manuel J. Antunes;

Iatrogenic fistula between the aorta and the right ventricular outflow tract after Melody valve implantation: Case report and literature review Petra Loureiro; José F. Martins; Alain Fraisse; Rui Rodrigues; José Fragata; Fátima F. Pinto;

Changes in heart rate variability after ventricular septal defect closure in children. Where do we stand? Adaptation mechanism, sequela or complications? Fátima F. Pinto;