Heart and Lung Sounds Reference Guide Aortic Pulmonic Erb's Point Tricuspid Mitral Lungs Bronchophony - Healthy Auscultation Reference Signup Now. Unlock lessons and more. SignUp Patient Normal Speed play pause Patient Half Speed play pause Lesson For heart sounds listen to the synthetic sound while reviewing this lesson. Ask the patient to say "99" several times while auscultating the chest walls. Over healthy lung areas, "99" is not understandable. This is because sound is impeded in normal lungs.Compare this voiced breath sound to the recording in the "Bronchophony - Abnormal" lesson. The waveform(s) seen above are a chart of sound amplitude (loudness) on the vertical axis against time on the horizontal axis. Listening Tips A summary of the key aspects of this heart or lung sound. Ask patient to say "99" several times. Auscultate chest walls. Over healthy lung areas "99" is not understandable. Compare this sound to the Bronchophony - Abnormal recording.. Auscultation Method The recommended patient position is sitting For this sound, use stethoscope's diaphragm The recommended auscultation position for the stethoscope is posterior-3l Relevant Courses If you wish to review a complete mobile concerning Bronchophony - Healthy Auscultation Reference and related heart sounds, the modules(s) listed below may be useful. Each lesson includes text that explains the auscultatory sound and its clinical significance. The lesson also includes an audio track for playback. A waveform provides a great way to visualize the sounds. Finally, we also include an animation video. For heart sounds, the video illustrates heart muscle and valve movements along with blood flow. For lung sounds, the primary source of the sounds can be seen. Each module also includes a quiz. Intermediate Lung Sounds202 Introduction to Lung Sounds 203 Bronchophony - Healthy Auscultation Reference