Congenital heart disease means the condition is present from birth. It includes various cyanotic and acyanotic heart disease. Eg. ASD, VSD, PDA, TOF, DTGA, DORV, Single Ventricle, Coarctation of Aorta, etc.
Echocardiography has become the primary imaging tool in the diagnosis and assessment of congenital and acquired heart disease in infants, children, and adolescents. It's the corner stone of managing any congenital heart disease.
Cardiac resynchronization therapy (CRT) is treatment to help your heart beat with the right rhythm. It uses a pacemaker to restore the normal timing pattern of the heartbeat and improve cardiac function.
A transthoracic echocardiogram (TTE) uses echocardiography to assess the structure and function of the heart. During the procedure, a transducer (like a microphone) sends out ultrasonic sound