Study of the spatial vectorcardiogram before and after pneumomediastinum.
D001018:Aortic Diseases / Q000503:physiopathology; D004374:Ductus Arteriosus, Patent / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000503:physiopathology; D011012:Pneumomediastinum, Diagnostic; D011666:Pulmonary Valve Stenosis / Q000503:physiopathology; D014672:Vectorcardiography