Trial manufacturing of the intraesophageal transducer for low (subaudible) and audible cardiac vibrations and clinical usefulness.
D004562:Electrocardiography; D004947:Esophagus; D006321:Heart / Q000502:physiology*; D006331:Heart Diseases / Q000175:diagnosis; D006801:Humans; D010701:Phonocardiography; D014159:Transducers; D014732:Vibration