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  • Title: Evaluation of right ventricular and right atrial size in children with atrial septal defect using two-dimensional apex echocardiography.
    Author: Fontana GP, Kirkman JH, DiSessa TG, Hagan AD, Hiriashi S, Isabel-Jones J, Friedman WF.
    Journal: J Clin Ultrasound; 1982 Oct; 10(8):385-90. PubMed ID: 6816819.
    Abstract:
    The ability of two-dimensional apex echocardiography to evaluate right ventricular and right atrial size was evaluated in 43 normal children and compared with 20 patients with a secundum atrial septal defect. From the apical four chamber view, the long axis length and short axis diameter of the right ventricle and right atrium were measured. The end-diastolic area of the right ventricle and end-systolic area of the right atrium were determined by planimetry. These data were indexed for body surface area. When compared with normal subjects, the area index of the right atrium and right ventricle were enlarged significantly in patients with a secundum atrial septal defect (p less than 0.001 and p less than 0.001, respectively). Mean values for the short axis dimension of the right ventricle and for the short axis and long axis diameter of the right atrium were greater in atrial septal defect patients than in normal subjects (p less than 0.001 for all). However, when both groups were compared, considerable overlap existed between the dimension measurements. Right ventricular long axis length failed to separate the two groups. Thus, two-dimensional apex echocardiography provides a noninvasive means of assessing right ventricular and right atrial size in children with an atrial septal defect.
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