Narrowing of the valve between the outlet of the left ventricle and the Aorta.
This is the most frequent Valvular disease. Because the stenosis makes blood flow from the left ventricle into the Aorta more difficult, the voiding of the left ventricle is impaired. This may cause symptoms of Angina Pectoris, shortness of breath during exertion and fainting. On heart auscultation, a murmur during the systole is heard, which ensues because of the compromised blood flow through the narrow valve.