Which chamber is most affected in cardiomyopathies?

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Multiple Choice

Which chamber is most affected in cardiomyopathies?

The left ventricle is the chamber most affected because cardiomyopathies are diseases of the heart muscle that most prominently involve the chamber responsible for pumping blood into the systemic circulation and bearing the greatest wall stress. In hypertrophic cardiomyopathy, the hallmark is thickening of the left ventricular muscle, especially the septum, which can obstruct outflow and impair function. In dilated cardiomyopathy, the left ventricle tends to dilate and lose contractile strength, leading to reduced ejection fraction. Even restrictive types often limit filling in the left ventricle due to stiffening. While the right ventricle or atria can be involved in some cases, the left ventricle is the primary site affected across the spectrum of cardiomyopathies.

The left ventricle is the chamber most affected because cardiomyopathies are diseases of the heart muscle that most prominently involve the chamber responsible for pumping blood into the systemic circulation and bearing the greatest wall stress. In hypertrophic cardiomyopathy, the hallmark is thickening of the left ventricular muscle, especially the septum, which can obstruct outflow and impair function. In dilated cardiomyopathy, the left ventricle tends to dilate and lose contractile strength, leading to reduced ejection fraction. Even restrictive types often limit filling in the left ventricle due to stiffening. While the right ventricle or atria can be involved in some cases, the left ventricle is the primary site affected across the spectrum of cardiomyopathies.

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