Pulmonary (or pulmonic) regurgitation (or insufficiency, incompetence) is a condition in which the pulmonary valve is incompetent and allows backflow from the pulmonary artery to the right ventricle of the heart during diastole. While a small amount of backflow may occur ordinarily, it is usually only shown on an echocardiogram and is harmless.
Pulmonary (or pulmonic) regurgitation (or insufficiency, incompetence) is a condition in which the pulmonary valve is incompetent and allows backflow from the pulmonary artery to the right ventricle of the heart during diastole. While a small amount of backflow may occur ordinarily, it is usually only shown on an echocardiogram and is harmless.
Source: Wikipedia "Pulmonary regurgitation" · CC BY-SA 4.0
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