
Keywords: انتگرال زمان سرعت; Velocity-time integral; Aortic; Pulmonary; Minute distance; Echocardiography; Children; Congenital heart disease; 2D; Two-dimensional; ASD; Atrial septal defect; BSA; Body surface area; CO; Cardiac output; HR; Heart rate; LA/Ao; Left atrium-to-aortic