Hi everyone. Anybody ever heard of this? I may have it and need an endoscopic ultrasound on Friday to find out. I was referred to the cardiologist b/c I sometimes wake up in the middle of the night gasping for air and have been more short of breath than everyone else when I exert myself my whole life. It's a small hole in the heart which may or may not require surgery. I've been told I have mitral valve prolapse for years, but the cardiologist told me he saw nothing to back that up. Any experience you guys have with this would be very appreciated. Thanks!