Performance Diagnosis of a Patent Foramen Ovale During Lung Transplantation Using Transesophageal Echocardiography

Injection of a contrast solution A - In the upper cellar territory with controlled ventilation without positive tele-expiratory pressure; B - In the upper cellar territory in controlled ventilation with a positive end-to-expiratory pressure of 10cm H2O; C - In the lower cellar territory with controlled ventilation without positive tele-expiratory pressure; D - In the lower cellar territory in controlled ventilation with a positive end-to-expiratory pressure of 10cm H2O;