Trans-septal TMVIV. A: pre-implant intraoperative TEE, B: balloon septostomy, C: prosthesis advancement through the intratrial septum, D: Prosthesis deployment, E: fully deployed prosthesis and Amplatzer device (Abbott Cardiovascular, Plymouth, MN, US) to close the iatrogenic atrial septal defect, F: post-implant intraoperative TEE.