Subject(s)

Humans , Male , Female , Heart Defects, Congenital/diagnosis , Echocardiography/methods , Echocardiography/standards , Pediatrics/methods , Pediatrics/standards , Arteries/physiology , /methods , Guidelines as Topic/standards , Diagnostic Techniques and Procedures/standards , Heart Valves/physiology , Pulmonary Veins/physiology , Heart Ventricles , Stroke Volume/physiology