creating a late diastolic crescendo murmur. In the presence of atrial fibrillation, the active left ventricular filling phase does not take place and the latter part of the mitral stenosis murmur ...

The classic murmur of aortic stenosis is a high-pitched, crescendo-decrescendo ("diamond shaped"), midsystolic murmur located at the aortic listening post and radiating toward the neck.