In this video, Dr. Smita Mishra, Paediatric Cardiologist, Associate Director - Jaypee Hospital, will explain about pulmonary stenosis. Pulmonary stenosis is the valvular obstruction at the level of pulmonary valve. It can present immediately after birth or later in age. If pulmonary stenosis is severe at birth, then baby will be blue. These patients are treated with the ballooning procedure but if valve is not involved or the obstruction is below or above the valve then in such cases surgery is advised. Once it is corrected, the baby doesn’t need any other intervention.