References External links Echocardiography in Mitral stenosis at Wikiecho Echocardiographic features of Mitral Stenosis Mitral Valve Repair at The Mount Sinai Hospital

As research has shown, this process is not a result of stenosis.

The lungs, heart (supravalvular pulmonary stenosis), intestines, or arteries may be affected with a variety of severe impairments.

Traditionally, clinical carotid ultrasounds have only estimated the degree of blood lumen restriction, stenosis, a result of very advanced disease.

It's still getting some base level oxygen less because of the stenosis and ischemia but it still gets some oxygen.

Now, a word that you might hear in a medical context is stenosis , and the word just refers to the narrowing, usually of a blood vessel.

You know from the videos on stenosis and ischemia and the videos on heart attacks that ischemia is a lack of blood flow to certain body tissues.

They all imply some sort of narrowing, or stenosis, of arteries that leads to ischemia, reduced blood flow, so that the heart can't function as well as it otherwise could.

So when this guy is jogging, because he has restricted blood supply because the heart is experiencing ischemia downstream from this stenosis, that's why there's heart failure so not able to deliver

It can also refer to the narrowing of any type of tubular structure, so if you have any type of pipe in a biological system, you can use stenosis there, but usually they're talking about a blood vessel.

Now if you have stenosis in one of your blood vessels, and it leads to ischemia then the muscles, and let's just say this a coronary artery here... the muscle cells over here are going to get less oxygen.

So, you can imagine that if we're really zoomed in on the surface of the heart and we're looking at the cardiac muscle tissue, if this person with this heart needed to go jogging and this cardiac muscle cell needed oxygen, they probably wouldn't be able to get the needed oxygen because of the stenosis which caused ischemia.