Pulmonary Subvalvular Stenosis

**Definition:** Narrowing below the PULMONARY VALVE or well below it in the infundibuluar chamber where the pulmonary artery originates, usually caused by a defective VENTRICULAR SEPTUM or presence of fibrous tissues. It is characterized by restricted blood outflow from the RIGHT VENTRICLE into the PULMONARY ARTERY, exertional fatigue, DYSPNEA, and chest discomfort.

**Tree numbers:** - C14.280.484.716.762 - C14.280.955.750.762

**Synonyms:** - Infundibular Stenosis, Pulmonary - Obstructive Subaortic Conus - Pulmonary Infundibular Stenoses - Pulmonary Infundibular Stenosis - Pulmonary Stenoses, Subvalvular - Pulmonary Stenosis, Subvalvular - Pulmonary Subvalvular Stenoses - Stenoses, Pulmonary Infundibular - Stenoses, Pulmonary Subvalvular - Stenoses, Subvalvular Pulmonary - Stenosis, Pulmonary Infundibular - Stenosis, Pulmonary Subvalvular - Stenosis, Subvalvular Pulmonary - Subvalvular Pulmonary Stenoses - Subvalvular Pulmonary Stenosis - Subvalvular Stenoses, Pulmonary - Infundibular Stenoses, Pulmonary - Subvalvular Stenosis, Pulmonary