Mild PS is generally a benign condition that requires regular cardiac follow-up but no specific therapy.
Patients may also feel tired easily (especially during physical activity), breathing difficulties (particularly during exertion), discomfort in the chest and lungs, and some individuals may also experience fainting episodes.
In severe cases, patients may experience bluish or greyish skin due to low oxygen levels, especially in babies with critical PS.
[citation needed] When pulmonic stenosis (PS) is present, resistance to blood flow causes right ventricular hypertrophy.
If pulmonary stenosis is severe, congestive heart failure occurs, and systemic venous engorgement will be noted.