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Physiopathology

Approximately half the Pectus Excavatum cases will present clinical symptomatology which will be determined by the physiopathological alteration of the deformity. Therefore, there will be a large number of Pectus Excavatum patients who probably will present with neither the symptomatology nor, consequently, corrective criteria.

In the affected cases, the reduction in the anteroposterior diameter of the chest causes a deviation of the mediastinal viscera, generally towards the left haemothorax, which causes a deviation to the left in the cardiac axis and a restricted breathing pattern.

In these cases, a deficit in blood filling may be detected in the right chambers of the heart; cardiac displacement/rotation with a consequential reduction in the volume ejected by the left ventricle and a reduction in its capacity to pump efficiently; a prolapsed mitral valve; arrhythmia; or ventricular hypertrophy resulting from axis deviation.