Parent Information

Pulmonary Stenosis (PS)

The Pulmonary Artery is the main pipe from the heart to supply the lungs. It is essential for sending the blood back to the lungs to be refilled with Oxygen! To prevent backflow the Pulmonary Artery has a valve at the start of the pipe just after the heart. Pulmonary Stenosis is where either the pipe or the valve are unusually narrow or stiff. This results in the blood having to squeeze through the narrowing or the tight valve. This causes higher pressure in the pipe and makes the heart work harder. The narrowing can be above the valve (supra-valvular), below the valve (infundibular) or due to the valve itself (valvular). In addition to this your cardiologist may refer to it as mild, moderate or severe. This tells us how serious the narrowing is and whether a catheter (key hole) or surgery may be needed.