S3 (A dull, weak, low pitched sound).
Pericardial Rub (A scratchy or grating sound).
Aortic Stenosis (A systolic, crescendo-decrescendo murmur with a harsh or grating quality).
S4 (A dull, low frequency sound; occurs immediately prior to the first heart sound).
S1 and S2 (S1 is a dull, prolonged sound, "lub". S2 is a short, sharp sound, "dub").
Mitral Regurgitation (A holosystolic murmur with a high pitch and harsh blowing quality).
Aortic Regurgitation (Murmur is blowing, high-pitched, diastolic, and decrescendo).
Mitral Stenosis (An early diastolic opening snap is heard followed by a low-pitched decrescendo-crescendo rumbling diastolic murmur).
