University of Michigan Heart Sound and Murmur Library

= Play the Heart Sound

(mp3 versions of all the sounds on this site)

  Apex Area - Supine, Listening with the bell of stethoscope
  Single S1 S2   Split S1   Mid-Systolic Click  
Mitral Valve Prolapse
Early Systolic Murmur Mid-Systolic Murmur Late Systolic Murmur Holosystolic Murmur

Acute Mitral Regurgitation
Regurgitation due to CAD (Coronary Artery Disease)

Mitral Regurgitation due to MVP (Mitral Valve Prolapse)

Classic Mitral Regurgitation
Ventricular Septal Defect when heard along the left sternal border



  Apex Area - Left Ducubitus, Listening with the bell of stethoscope
  S4 Gallop   S3 Gallop   Systolic Click with Late Systolic Murmur

Left Ventricular Hypertrophy
Both Normal and Cardiomyopathy
Mitral Valve Prolapse with Mitral Regurgitation
S4 and Mid-Systolic Murmur S3 and Holosystolic Murmur Mitral Opening Snap and Diastolic Murmur  
Ischemic Cardiomyopathy with Mitral Regurgitation
Dilated Cardiomyopathy with Mitral Regurgitation
Mitral Stenosis


  Aortic Area - Sitting, Listening with the bell of stethoscope
  Normal S1 S2   Systolic Murmur with Absent S2   Early Diastolic Murmur


Severe Aortic Stenosis
Aortic Regurgitation
Systolic and Diastolic Murmurs      
Combined Aortic Stenosis and Regurgitation            



  Pulmonic Area - Supine, Listening with the diaphragm of stethoscope  
  Single S2   Split S2 Persistent   Split S2 Transient

Normal in Elderly
Complete Right Bundle Branch Block (On ECG)
Ejection Systolic Murmur with Transient Splitting S2 Ejection Systolic Murmur with Persistent Split S2 and Ejection, Systolic Murmur Ejection Systolic Murmur with Single S2 and Ejection Click    
Innocent Murmur

Arterial Septal Defect

Pulmonary Valve Stenosis