Tricuspid regurgitation is most commonly associated with which part of the heart?

Tricuspid regurgitation is primarily associated with the right atrium. The tricuspid valve, located between the right atrium and right ventricle, can fail to close properly, leading to the backflow of blood into the right atrium during ventricular contraction. This condition is often caused by underlying issues such as right ventricular dilatation, pulmonary hypertension, or other structural abnormalities affecting the right side of the heart.

In the case of tricuspid regurgitation, the elevated pressure in the right ventricle can cause the right atrium to enlarge due to the increased volume overload. This relationship highlights the importance of assessing the right atrial size and function in patients with tricuspid valvular disorders. Recognizing the underlying mechanisms linking tricuspid valve function and right atrial pressure dynamics aids in understanding the clinical implications and potential management of this condition.