phonocardiography

sound recording method (tones and noise) arising from the activity of the heart and is used to assess its performance and detection of violations, including valve defects.
Registration phonocardiogram produced in a specially equipped isolated room, where you can create a complete silence. The doctor determines the point on the chest, which is then made to record with the microphone. The position of the patient during the recording horizontal. Application phonocardiography to dynamically monitor the condition of the patient improves the accuracy of diagnostic findings and provides an opportunity to assess the effectiveness of treatment.