Severe symptomatic aortic stenosis is an absolute contraindication to exercise. Which scenario is correct?

Severe symptomatic aortic stenosis is an absolute contraindication to exercise. Which scenario is correct?

• A. Severe obstruction of the aortic valve without symptoms.
• B. Moderate obstruction with symptoms.
• C. Severe obstruction of the aortic valve with symptoms.
• D. Normal aortic valve.

Answer: (C)

The key idea is that exercising is dangerous when the aortic valve is severely narrowed and the patient has symptoms. In severe aortic stenosis, the valve severely limits the amount of blood the heart can eject, so the heart can’t adequately increase output during exercise. When symptoms are present—such as chest pain, fainting, or shortness of breath—this signals that the heart cannot tolerate exertion. Pushing the heart under those conditions can lead to dangerous outcomes like ischemia, syncope, or sudden cardiac death, so exercise is absolutely contraindicated. The other scenarios don’t meet that strict condition. Severe narrowing without symptoms isn’t an absolute contraindication because there are no exertional symptoms to signal immediate risk. Moderate narrowing with symptoms carries risk but not the same severity as severe obstruction with symptoms. A normal valve presents no intrinsic obstruction to exercise.

The key idea is that exercising is dangerous when the aortic valve is severely narrowed and the patient has symptoms. In severe aortic stenosis, the valve severely limits the amount of blood the heart can eject, so the heart can’t adequately increase output during exercise. When symptoms are present—such as chest pain, fainting, or shortness of breath—this signals that the heart cannot tolerate exertion. Pushing the heart under those conditions can lead to dangerous outcomes like ischemia, syncope, or sudden cardiac death, so exercise is absolutely contraindicated.

The other scenarios don’t meet that strict condition. Severe narrowing without symptoms isn’t an absolute contraindication because there are no exertional symptoms to signal immediate risk. Moderate narrowing with symptoms carries risk but not the same severity as severe obstruction with symptoms. A normal valve presents no intrinsic obstruction to exercise.