Abstract
Objects: To analyze the features of ultrasound images of
neonates with different degrees of bronchopulmonary dysplasia (BPD), and
to investigate the value in evaluating moderate and severe BPD.
Methods: The neonates admitted to newborn intensive care unit
(NICU) were divided into BPD group, non-pulmonary disease group and
infectious pneumonia group. This study included two parts: (1)The image
characteristics including pleural morphology, alveolar-interstitial
syndrome (AIS), retrodiaphragmatic hyperechogenicity and diaphragmatic
shape of different degrees of BPD were summarized. (2) We compared the
value of lung ultrasound and chest X-ray in diagnosing moderate to
severe BPD. Results: In the mild BPD group, the proportion of
pleural thickening, pleural abnormalities and AIS was higher. The
moderate and severe BPD group had higher prevalence of diffuse AIS,
small cysts near the diaphragm and rough diaphragm. The sensitivity and
specificity of ultrasound in diagnosis of moderate and severe BPD were
31.1% and 99.1%. There was no significant difference of the diagnosis
values between lung ultrasound and chest X-ray. Conclusion: The
ultrasound features of moderate and severe BPD were diffuse AIS, small
cysts near the diaphragm and abnormal diaphragm. Compared with chest
radiography, lung ultrasound showed the similar value in diagnosing
moderate and severe BPD. Key words: bronchopulmonary dysplasia,
lung, ultrasonography, infant