He specializes in both adult and pediatric cardiac anesthesia, and is the Director of Pediatric Cardiac Anesthesia at the Mount Sinai Medical Center New York. His research interests include fast-tracking in pediatric cardiac anesthesia, tissue oximetry in children undergoing surgery for congenital heart disease and in adults undergoing procedures in the electrophysiology lab. Dr. Mittnacht has been a member of the Society of Cardiovascular Anesthesiologists since 1998. He has been part of SCA sponsored meetings as faculty since 2003, and has assisted in many workshops on transesophageal echocardiography as well as handheld ultrasound applications.