What is one pathology that subaortic stenosis may present as?

Subaortic stenosis is a condition characterized by a narrowing below the aortic valve, which can lead to significant obstruction to blood flow from the left ventricle into the aorta. One of the common pathologies that can present with subaortic stenosis is Hypertrophic Obstructive Cardiomyopathy (HOCM).

In HOCM, the hypertrophy of the interventricular septum can lead to a dynamic obstruction due to the close proximity of the hypertrophied muscle to the outflow tract. This makes HOCM a frequent association with subaortic stenosis, as the pathophysiology of both conditions can overlap significantly, with both leading to obstructed outflow from the heart.

Understanding this relationship is crucial for recognizing the clinical implications of subaortic obstruction, as patients may present with symptoms such as exertional dyspnea, angina, and syncope due to impaired cardiac output.