heart and blood vessel disorders
Pulmonic Stenosis
Introduction
Pulmonic (pulmonary) stenosis is a narrowing of the pulmonary valve opening that blocks (obstructs) blood flow from the right ventricle to the pulmonary artery. It is often present at birth (congenital) and thus affects children. (See also Overview of Heart Valve Disorders and the video The pulmonic valve is in the opening between the right ventricle and the blood vessels going to the lungs (pulmonary arteries). The pulmonic valve opens as the right ventricle contracts to pump blood into the lungs. Certain disorders causes the valve opening to be narrowed (stenosis). Pulmonic stenosis, which is rare among adults, is usually due to a Overview of Heart Defects . When the stenosis is severe, it is usually diagnosed during childhood, because it causes a loud heart murmur (abnormal heart sound that a doctor can hear with a stethoscope). Severe pulmonic stenosis occasionally causes Symptoms include chest pain (angina), shortness of breath, and fainting. 