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Description Sounds
Normal heart sounds
Murmurs Audio examples

Aortic stenosis ( early) / & AS- late
Murmur:

  • Harsh late-peaking crescendo-decrescendo systolic murmur
  • Heard best- left 2nd ICS
  • Radiation to the carotids.

Possible associated findings:

  • Abnormal carotid pulse
  • Diminished and delayed ("pulsus parvus and tardus")
  • Sustained Apical impulse
  • Calcified aortic valve on CXR

 
Mitral regurgitation
Murmur:
  • Blowing holosystolic murmur
  • Heard best at the apex
  • Radiation to the axilla and inferior edge of left scapula.

Possible associated findings:

  • S2: wide physiologic splitting
  • S3
Pulmonic stenosis
Murmur:
  • Harsh crescendo-decrescendo systolic murmur
  • Heard best sternal border bat 2nd or 3rd intercostal spaces
  • Increases with inspiration

Associated findings:

  • Ejection sounds heard at sternal edge, 2nd or 3rd intercostal space
  • Wide physiological splitting of S2
  • Prominent A wave of the jugular venous pulse
Aortic insufficiency
Murmur:
  • Soft blowing early diastolic decrescendo murmur
  • Heard best at the left 2nd ICS without radiation
  • May also hear systolic flow murmur and diastolic rumble (Austin Flint)

Possible associated findings:

  • Dilated apical impulse
  • Abnormal and collapsing arterial pulses
Mitral stenosis
Murmur:
  • Low frequency rumbling mid-diastolic murmur, with presystolic component possible
  • Heard best at apex
  • Accentuated in left lateral decubitus position

Associated findings:

  • Apical impulse absent or small
  • Irregular pulse ( atrial fibrillation)
  • Loud S1
  • Elevated neck veins with exaggerated A wave
Benign murmur
Atrial septal defect
Ventricular septal defect
Patent ductus arteriosus
Extra heart sounds Audio examples
Split S2
S3
S4
Rubs Audio examples
Pericardial rub (2 component)
Pericardial rub (3 component)

Listen for normal heart sounds:

  • The 1st heart sound, S1 (lub), marks the beginning of systole (end of systole).
    • Related to the closure of the mitral and tricuspid valves.
    • Loudest at the apex.
  • The 2nd hear sound, S2 (dub), marks the end of systole (beginning of diastole).
    • Related to the closure of the aortic and pulmonic valves.
    • Loudest at the base.

Diagram showing sytole & diastole wave.

 

 

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