What is the nature of the ‘second heart sound’ in Mitral Stenosis?


What is the nature of the ‘second heart sound’ in Mitral Stenosis?

Nature of the second heart sound -MS


Nature of the second heart sound (S2) depends upon the severity of pulmonary hypertension.

  1. As pulmonary artery pressure increases – Initially the intensity of P2 increases
  2. As pulmonary artery pressure increases further – splitting of the S2 narrows as P2 becomes earlier
  3. As pulmonary artery pressure increases further – then S2 becomes single and loud

What is the nature of the ‘second heart sound’ in Mitral Stenosis?