<prompt> Most common type of TAPVC -SupracardiacCardiacInfracardiacMixed  <response>: Ans. is a Supracardiac Total anomalous pulmonary venous connection TAPVC is characterized by abnormal drainage of pulmonary veins into the right heart either by direct connection into the right atrium or into its tributaries. According to the site or level of connection of the pulmonary veins to the systemic venous system TAPVC has been classified into four types Type I most common: 45: Anomalous connection at supracardiac level PV drains into left innominate vein or SVC. Type II 25: Anomalous connection at cardiac level PV joins the coronary sinus or enter right atrium directly. Type III 25: Anomalous connection at infracardiac level PV drain into portal vein. Type IV 5: Anomalous connection at multiple levels. In supracardiac TAPVC the pulmonary veins join to form a single trunk common pulmonary vein which than drain through anomalous connection. 