The hemodynamic is determined by the size of the pulmonary stenosis. With increasing degree of the pulmonary stenosis the severity of the right-left shunt via the ventricular septum defect, facilitated by the overriding of the aorta, increases. The origin of this cardiac abnormality is not known in detail, but a correlation with a chromosome aberration has been found (22q11, compare catch syndrome, 12).
Overview, according to the clinical picture, of the diagnostic possibilities as well as the therapy.
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