Transesophageal Echocardiography (TEE) is often performed by a cardiac anesthesiologist to evaluate, diagnose, and treat patients in the perioperative period. TEE is very useful during many cardiac surgical procedures (e.g., mitral valve repair, off-pump and on-pump CABG). It helps to detect and quantify the disease preoperatively as well as to assess the results of surgery immediately after the procedure. If the repair is found to be inadequate,