title: Evaluation of the cardiac function by means of the non-invasive techniques before and after the operation of the funnel chest.
mesh_terms: D002648:Child; D002675:Child, Preschool; D004562:Electrocardiography; D005260:Female; D005660:Funnel Chest / Q000503:physiopathology* / Q000601:surgery; D006321:Heart / Q000503:physiopathology*; D006801:Humans; D008297:Male; D010701:Phonocardiography; D011184:Postoperative Period; D013997:Time Factors