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CLINICAL UTILITY OF ECHOCARDIOGRAPHY FOR THE DIAGNOSIS AND PROGNOSIS IN CHILDREN WITH BRONCHOPULMONARY DSYPLASIA
YOUNG EARL CHOI1, HWA JIN CHO1, EUN SONG SONG1, YOUNG YOUN CHOI1, JAE SOOK MA2, YOUNG KUK CHO1,2*
1Department of Pediatrics, Chonnam National University Hospital, Chonnam National University Medical School
2Department of Pediatrics, KS Hospital
Corresponding Author: YOUNG KUK CHO ,Tel: +82-62-220-6646, Email: youngcx@hanmail.net
ABSTRACT
BACKGROUND: Bronchopulmonary dysplasia (BPD) may result in chronic pulmonary artery hypertension and right ventricular (RV) dysfunction. Various echocardiographic assessments of RV dysfunction have been used to determine whether echocardiographic measurements of premature infants with BPD could provide sensitive measures of RV function that correlates with BPD severity. METHODS: Twenty-eight control subjects without BPD (non BPD group), 28 patients with mild BPD, 11 patients with moderate BPD, and six patients with severe BPD underwent echocardiograms with standard measurement such as ejection fraction by M-mode, tricuspid regurgitation pressure gradient, myocardial performance index (MPI) derived from pulse Doppler, and tissue Doppler imaging (TDI) measurements. BPD severity was classified by the NICHD/NHLBI/ORD workshop rating scale. RESULTS: None of the standard echocardiographic findings was significantly different between the control group and BPD groups. However, mean septal TDI-MPI of the severe BPD group (0.68 ± 0.06) was significantly (p < 0.01) higher than that of the non-BPD (0.58 ± 0.10) or the mild BPD group (0.59 ± 0.12). In addition, mean RV TDI-MPI of the severe BPD group (0.71 ± 0.13) was significantly (p < 0.05) higher than that of the non-BPD group (0.56 ± 0.08) or the mild BPD group (0.60 ± 0.125). Linear regression showed a good correlation between the severity of BPD and RV TDI-MPI (p = 0.01, R = 0.30) or septal TDI-MPI (p = 0.04, R = 0.24). CONCLUSION: Echocardiographic evaluation of RV function based on an assessment of RV TDI-MPI can provide RV dysfunction parameter in premature infants with BPD.
Keywords: Right Ventricular Function, Bronchopulmonary dysplasia, Echocardiography
Volume 25, No 3
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