Narrowing of the Mitral valve located between the left atrium and the left ventricle. Resulting from this narrowing, impaired blood flow is encountered during the diastole from the atrium to the ventricle.
On cardiac auscultation, a diastolic murmur is perceived.
Symptoms are usually associated with blood congestion in the atrium (due to more difficult voiding) and they include shortness of breath as well as rhythm disturbances due to anatomical changes of the atrium and more.
If necessary, surgical treatment is applied: dilation of the narrowed valve or its replacement.