Exercise With Aortic Stenosis: The Valve That Caps Cardiac Output - Why Severity Decides Everything and Symptoms Change the Rules
5 days ago
5 min read
Aortic stenosis is a plumbing problem at the heart's exit. The valve between the left ventricle and the aorta stiffens and narrows, and the heart must push blood through a smaller opening. For years it copes by thickening its walls; then, once symptoms appear, the outlook deteriorates fast. Exercise sits in a delicate position in this condition. A mildly narrowed valve is no barrier to activity; a severely narrowed one limits how much the heart can raise its output on demand, and the wrong kind of effort can drop the blood pressure to the brain. The rules turn on two questions: how narrow, and are there symptoms.
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