Which statement is true regarding symptomatic severe aortic stenosis during exercise testing?

Which statement is true regarding symptomatic severe aortic stenosis during exercise testing?

• A. It permits greater cardiac output during exertion.
• B. Symptoms resolve with exercise.
• C. It is an absolute contraindication because fixed outflow obstruction limits augmentation.
• D. It has no impact on safety.

Answer: (C)

Symptomatic severe aortic stenosis creates a fixed outflow obstruction. During exercise, the heart must increase cardiac output, but the narrowed valve prevents any meaningful augmentation of flow. This can lead to reduced cerebral and systemic perfusion, plus increased LV pressures and myocardial stress, risking syncope, hypotension, ischemia, or heart failure. Because of these dangers, exercise testing is an absolute contraindication in this scenario. The idea that symptoms would improve with activity or that the test has no safety impact isn’t accurate; the obstruction prevents the needed increase in output and raises the risk of serious events.

Symptomatic severe aortic stenosis creates a fixed outflow obstruction. During exercise, the heart must increase cardiac output, but the narrowed valve prevents any meaningful augmentation of flow. This can lead to reduced cerebral and systemic perfusion, plus increased LV pressures and myocardial stress, risking syncope, hypotension, ischemia, or heart failure. Because of these dangers, exercise testing is an absolute contraindication in this scenario. The idea that symptoms would improve with activity or that the test has no safety impact isn’t accurate; the obstruction prevents the needed increase in output and raises the risk of serious events.