Symptoms
Dyspnea (shortness of breath) and fatigue are the most frequent symptoms, but patients may remain asymptomatic for long periods as long as the right ventricle maintains a normal pumping capability via compensatory mechanisms (hypertrophy). This disorder occasionally may occur in an acquired form with hypertrophic cardiomyopathy (a bulging of the septum into the right ventricle outflow tract) or perhaps secondary to a pericardial tumor. On physical examination, the physician is able to oscultate (listen) and identifies this disorder as a heart murmur. This murmur is present at birth since this disorder is usually congenital.
