Heart and Lung Sounds Reference Guide Aortic Pulmonic Erb's Point Tricuspid Mitral Lungs Acute Pericarditis Auscultation Reference Patient Normal Speed play pause Patient Half Speed play pause Simulated Full Speed play pause Lesson For heart sounds listen to the synthetic sound while reviewing this lesson. This is an example of acute pericarditis as auscultated at Erb's Point.Murmurs are caused by turbulent blood flow across incompetent or stenonic valves. In contrast, a pericardial friction rub is caused by the rubbing together of two surfaces of the pericardial sack.The pericardial friction rub has three parts; a systolic component, an early diastolic component and a late diastolic component.The first and second heart sounds are obscured by the rubbing sounds.In the anatomy tab you can see the yellow fluid accumulation around the heart caused by an inflamed pericardial sack. 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. S1: Rubbing, scratchy sound. Systole: Rubbing, scratchy sound, usually loudest during systole.S2: Rubbing, scratchy sound. Diastole: Rubbing, scratchy sound. Auscultation Method The recommended patient position is sitting leaning forward For this sound, use stethoscope's diaphragm The recommended auscultation position for the stethoscope is erbs-point Relevant Courses If you wish to review a complete mobile concerning Acute Pericarditis 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. Complex Conditions28 Introduction to Clinical Electrophysiology and the ECG311 Acute Pericarditis Auscultation Reference