MiscellaneousReference Values and Calculation of z-Scores of Echocardiographic Measurements of the Normal Pediatric Right Ventricle
Section snippets
Methods
The healthy study group consisted of 576 pediatric patients (328 male, 248 female). Only subjects whose echocardiographic results were judged normal by one of our staff pediatric cardiologists were included. The study group encompassed neonates to adolescents (aged 1 day to 18 years, BW 2.8 to 98.0 kg, BSA 0.20 to 2.23 m2), including 46 neonates and 64 infants. All patients with CHDs or acquired heart disease, chest and thoracic spine deformities, or chromosomal syndromes were excluded from
Results
All investigated RV variables, RVEDb-d, RVEDm-d, RVEDL, RVESL, RVEDa, and RVESa, increased from neonates to adolescents in a nonlinear way. The RVEDb-d RVEDm-d, RVEDL, RVESL, RVEDa, and RVESa data are shown in Figures 2 and 3, listed in Table 1, Table 2, Table 3, and shown in Supplementary Figures A and B.
Because of the strong collinearity of BSA and age, separate models for age and BSA were calculated. For RVEDb-d, RVEDm-d, RVEDL, RVESL, RVEDa, and RVESa, age, BL, BW, and BSA were significant
Discussion
Our study was undertaken to obtain normal RV internal dimensions values in a healthy pediatric study group. Our secondary aim was to see if those normal values could accurately predict RV dilatation in patients with moderate to large ASDs. It is important to create age-related normal values for children because pediatric cardiologists, unlike their adult colleagues, need to have measurements indexed to age, BL, BW, and BSA because of the variability of age-dependent growth. Quantitative
Disclosures
The authors have no conflicts of interest to disclose.
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