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Comparison of a subjective and a quantitative assessment of the neonatal chest radiograph
B Yuksel1, A Greenough, J Karani
1Department of Child Health, King's College Hospital, London, UK.
Insights
Quantitative chest radiograph scoring at 7 days accurately predicts chronic oxygen dependency in preterm infants. This method offers higher sensitivity and specificity than subjective chronic lung disease classification at 28 days.
Area of Science:
- Neonatal Medicine
- Pediatric Radiology
- Respiratory Medicine
Background:
- Chronic oxygen dependency is a significant concern in preterm infants.
- Early prediction of chronic lung disease aids in timely intervention.
- Current methods for assessing lung injury in preterm infants have limitations.
Purpose of the Study:
- To evaluate if quantitative chest radiograph scoring at 7 days predicts chronic oxygen dependency more accurately than subjective classification at 28 days.
- To compare the predictive performance of early quantitative imaging versus later subjective assessment for long-term respiratory outcomes.
- To determine the optimal timing and method for assessing radiographic signs of lung disease in preterm neonates.
Main Methods:
- Thirty preterm infants (median gestational age 27 weeks) underwent chest radiography at 7 and 28 days of age.
- The 7-day radiograph was quantitatively scored (0-18) based on lung volume, opacification, interstitial changes, pulmonary interstitial emphysema, and cystic elements.
- The 28-day radiograph was subjectively classified as Type I or Type II chronic lung disease (CLD) based on reticulation.
Main Results:
- A quantitative score of 5 at 7 days showed 83% sensitivity and 75% specificity for predicting chronic oxygen dependency.
- Subjective classification of Type II CLD at 28 days had lower predictive accuracy (67% sensitivity, 67% specificity).
- Quantitative assessment at 7 days demonstrated superior predictive value for chronic oxygen dependency.
Conclusions:
- Quantitative chest radiograph assessment at 7 days is a more effective predictor of chronic oxygen dependency than subjective assessment at 28 days.
- Early quantitative imaging provides valuable prognostic information for preterm infants' respiratory health.
- This quantitative approach can improve the management of respiratory distress syndrome and chronic lung disease in neonates.
Abstract:
The aim of this study was to assess if quantitative classification of the chest radiograph appearance at 7 days predicted chronic oxygen dependency (oxygen dependency beyond 8 weeks of age) more accurately than did subjective classification at 28 days of age. Thirty preterm infants, median gestational age 27 weeks, who had chest radiographs taken for clinical purposes at 7 and 28 days of age, were recruited into the study. The 7-day chest radiograph was scored according to the lung volume, presence of opacification, interstitial changes, pulmonary interstitial emphysema and cystic elements. The range of chest radiograph scores was from 0-18, a score of 18 indicating the most abnormal appearance. The 28-day chest radiograph was classified as Type I or Type II chronic lung disease (CLD), according to the presence or absence, respectively, of coarse reticulation. The median chest radiograph score at 7 days of the 30 infants was 5 (range 2-14). In predicting chronic oxygen dependency, a chest radiograph score of 5 at 7 days had 83% sensitivity and 75% specificity, but a diagnosis of Type II CLD at 28 days of age had only 67% sensitivity and 67% specificity. We conclude that a quantitative assessment of the chest radiograph appearance at 7 days is more useful than a subjective assessment at 28 days of age.