<prompt> Which of the following is not seen in mitral stenosis?Loud S1Opening snapMid diastolic murmurS3  <response>: Mitral Stenosis is aw : -Loud S1 -Opening Snap -Mid Diastolic murmur The first hea sound S1 is usually accentuated and slightly delayed. The pulmonic component of the second hea sound P2 also is often accentuated, and the two components of the second hea sound S2 are closely split. The opening snap OS of the mitral valve is most readily audible in expiration The OS is followed by a low-pitched, rumbling, diastolic murmur, heard best at the apex with the patient in the left lateral recumbent position In general, the duration of this murmur correlates with the severity of the stenosis in patients with preserved cardiac output. Note : Rheumatic Hea Disease is the mc causue of MS. 