S3 Gallop

• Facts:
  Low frequency diastolic sound heard after S2
  Blood from LA that strikes blood already in LV
  Normal, non worrisome sound in young, healthy patients
  Consider fluid overload in older patients
  
• History / PE:
  SOB
  Tachypnea
  Hypoxemia
  
• Treatment:
  Diuretic agents
• See Also:
  Cardiac murmurs
  S4 Gallop
• Associated With:
  Dilated cardiomyopathy