Abstract
Our preliminary study suggested the possibility of a reliable method of measurement of right ventricular outflow tract (RVOFT) for the assessment of RV size by echocardiography (E). We further examined 110 male (M) and 90 female (F) , normal school children, 5-14 years of age, with body surface area (BSA) varying from 0.7 to 1.59 to establish normal standards. In the standard fashion, strip chart E recordings were obtained of the aortic root from the 3rd or 4th left intercostal space. Inner RVOFT at the onset of Q wave of the EKG, the distance from the endocardium of the anterior RV wall to the outer aspect of the anterior wall of the aorta was measured in millimeters for several cardiac cycles and averaged. The results were as follows for the mean and 1 standard deviation for the different BSA
Our study demonstrates increase in RVOFT diameter with larger BSA in keeping with the other cardiac chambers. The difference in the RVOFT sizes at any BSA between M and F children was not statistically significant. Our study establishes normal standards for RVOFT diameter for these normal school children.
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George, L., Riemenschneider, T., Mathewson, J. et al. 109 A NEW METHOD FOR ECHOCARDIOGRAPHIC ASSESSMENT OF RIGHT VENTRICLE IN CHILDREN. Pediatr Res 12 (Suppl 4), 382 (1978). https://doi.org/10.1203/00006450-197804001-00114
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DOI: https://doi.org/10.1203/00006450-197804001-00114