 After satisfactory heparinization has been obtained, the patient was placed on cardiopulmonary bypass and another pursestring suture was placed in the right superior pulmonary vein and a catheter was placed for suction in the left atrium. 
After satisfactory heparinization has been obtained , the patient was placed on cardiopulmonary bypass and another pursestring suture was placed in the right superior pulmonary vein and a catheter was placed for suction in the left atrium .