Question

A 50-year-old female presented with dyspnea and chest pain. Which of the following proves that she has aortic stenosis rather than aortic regurgitation?

• A. Increase in myocardial oxygen consumption is seen with increased pressure work than volume
• B. Aortic stenosis causes reduced pressure at aortic valve
• C. Workload has nothing to do with myocardial oxygen consumption
• D. Increase in preload more than afterload than afterload

Hint:

Aortic stenosis is characterized by increased pressure work, leading to increased myocardial oxygen consumption, while aortic regurgitation involves volume work, which does not cause as much oxygen demand.

Answer 1

The Correct Option is A

In aortic stenosis, there is an increase in pressure work because the left ventricle has to generate higher pressures to overcome the narrowed aortic valve. This results in increased myocardial oxygen consumption. In contrast, aortic regurgitation leads to volume work and less pressure load on the myocardium.