How does alcohol affect someone who has aortic valve stenosis?

Adversely: Alcohol is usually a vasodilator. For patiens with significant aortic stenosis a reduction in systemic blood pressure can have serious end organ consequences such as heart damage and kidney and brain problems.

Heart & BP: Alcohol can contribute to atherosclerosis, which can cause or worsen aortic valve stenosis ... But more importantly, alcohol can affect blood pressure and heart rate and can make the symptoms of aortic stenosis worse ...

Variable: Like any drug, alcohol has its own pharmacologic profile and metabolism with acute and chronic adverse effects possible. If the aortic stenosis is mild to moderate or less, modest alcohol intake may have little to no effect. If the aortic stenosis is severe or critical, then instability of blood pressure or heart rhythm may result and create clinically important problems.