[Measurement by Doppler echocardiography of the ratio of pulmonary/systemic flow rates in atrial septal defects. Apropos of 15 cases].


Fifteen patients with an ostium secundum type atrial septal defect, aged between 5 and 68 (mean = 31) underwent Doppler-echocardiographic evaluation of the ratio of pulmonary and systemic flow rates. Systemic flow was evaluated at the aortic orifice, as well as at the mitral ring and at the extremities of the mitral cusps, based upon the measurement of… (More)