ABSTRACT
This chapter deals with isolated pulmonary stenosis (PS). Systolic right ventricular function is maintained in compensated PS. Necropsy in patients with severe PS will reveal multiple subendocardial infarctions involving the right ventricle and papillary muscles. Significant PS which has not been treated in childhood is a rare finding in adult patients. However, there may be a progression in the severity of originally less significant lesions, restenosis, or infundibular PS over the years. A systolic click due to an abrupt bulging of the cusps of a compliant valve fused in commissures. It is not present in a dysplastic valve. To assess physical fitness and oxygen consumption during exercise; measuring the saturation with pulsed oxymeter during exercise helps to rule out a potential right-to-left shunt. When assessing the significance of PS, account has to be taken to flow rate, heart rate, and right ventricular function.
