Cardiac Subspecialty Certification Practice Test

Patients with severe aortic regurgitation often experience shortness of breath due to the increased volume of blood that flows back into the left ventricle from the aorta during diastole. This backflow leads to volume overload of the left ventricle, causing it to dilate and eventually fail, which results in pulmonary congestion. As fluid accumulates in the lungs, patients commonly report difficulty breathing, especially during exertion or when lying flat. Although other symptoms such as ankle swelling (indicative of fluid retention), chest pain (related to decreased coronary perfusion), and palpitations (potentially due to arrhythmias caused by left ventricular enlargement) can occur, they are generally less prominent in the context of severe aortic regurgitation compared to shortness of breath. This makes shortness of breath a hallmark symptom of the condition, reflecting the significant impact on the respiratory system as the heart struggles to manage the abnormal blood flow dynamics.