Review Note

Last Update: 09/07/2024 06:07 PM

Current Deck: MF1::Jeff Redgrave

Published

Currently Published Content

Front

Both coronary artery disease and aortic stenosis lead to myocardial ischemia, which usually presents as chest pain. What is the main exertional symptom of aortic stenosis rarely seen with coronary artery disease?

Back

Presyncope/syncope. With aortic stenosis, the myocardium is working hard to generate sufficient cardiac output at rest, and output is essentially fixed because of the stenosis.. With activity, not only does oxygen demand increase, but the arterioles of skeletal muscle vasodilate, decreasing blood pressure. With more severe stenosis, the heart is unable to generate sufficient output to perfuse the brain, leading to presyncope/syncope. In CAD, the ischemia is to the heart, but the brain perfuses sufficiently (unless there is a cardiogenic shock state, which would be unlucky) so presyncope is unlikely to be from stable CAD..

No published tags.

Pending Suggestions

No pending suggestions for this note.