| High-resolution computed tomography findings of lung parenchyme changes in very low birth weight infants treated with oxygen |
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Young Man Jin1, David Chanwook Chung1, Young Pyo Chang1, Yung Suk Lee2, En Sun Lee2 |
1Department of Pediactrics, College of Medicine Dankook University Cheonan, Korea
2Department of Radiology, College of Medicine Dankook University Cheonan, Korea |
| 산소 치료를 받은 극소저출생 체중아에서 폐 실질변화에 관한 고해상컴퓨터 단층촬영술 소견에 관한 연구 |
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진용만1, 정찬욱1, 장영표1, 이영석2, 이인선2 |
1단국대학교 의과대학 소아과학교실
2단국대학교 의과대학 영상의학교실 |
Correspondence:
Yung Suk Lee, Email: ychang@dankook.ac.kr
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| Abstract |
Purpose
: The objective of this study is to observe high-resolution computed tomography (HRCT) findings of lung parenchyme in very low birth weight (VLBW) infants between the corrected age of 38-42 weeks who were treated with oxygen after birth, and to compare them to the clinical severity of bronchopulmonary dysplasia (BPD).
Methods
: The lungs of fourty-four VLBW infants with gestational ages of less than 32 weeks and birth weights of less than 1,500 g who were treated with oxygen after birth were examined using HRCT taken when the corrected age was between 38-42 weeks. Common findings among the infants and the frequency of their occurrences were noted. Total CT scores obtained by the summation of air trapping and actelectasis scores and the ratio of bronchus-to-pulmonary artery diameter were used to quantitatively evaluate HRCT findings and correlate them with the clinical severity of BPD as defined by Jobe-Bancalari diagnostic criteria.
Results
: 1) The most common findings in HRCT images of the lungs were air trapping (56%), atelectasis (70.5%), linear opacity (77%), and distortion of the bronchopulmonary bundle (65.9%). These findings were more commonly observed in infants with BPD in a mixed pattern than those without (P<0.05). However, abnormal findings were also found in HRCT images of some infants without BPD. In infants with BPD, air trapping, atelectasis and total CT scores were higher than those without BPD. Also infants with BPD had a lower bronchus-to-pulmonary artery diameter than those without BPD (P<0.05). 2) The total CT scores (r=0.799, P<0.0001) and the ratio of bronchus- to-pulmonary artery diameter (r=0.576, P<0.0001) showed a linear correlation with the clinical severity of BPD.
Conclusion
: HRCT findings in VLBW infants between the corrected age of 38-42 weeks who had been treated with oxygen after birth are useful in revealing pathologic changes in the lung parenchyme and show a good correlation with the clinical severity of BPD. |
| Key Words:
Tomography , X-ray computed , Bronchopulmonary dysplasia , Infant , Very low birth weight , Oxygen inhalation therapy |
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