Lung ultrasound in bronchiolitis

Area of Science:

• Pediatric Pulmonology
• Medical Imaging
• Neonatal Care

Background:

• Bronchiolitis is a common infant lower respiratory tract infection.
• Predicting bronchiolitis severity in full-term infants is challenging with current methods.
• Lung ultrasound (LUS) is a recognized tool for pediatric respiratory disease assessment.

Purpose of the Study:

• To correlate lung ultrasound (LUS) scores with clinical severity scores in infants with bronchiolitis.
• To describe LUS findings in infants with and without bronchiolitis.
• To compare LUS findings with chest X-ray (CXR) findings in hospitalized infants.

Main Methods:

• A prospective, single-center study involving 92 infants (63 with bronchiolitis, 29 controls).
• Clinical evaluation and LUS scoring for all bronchiolitis cases.
• CXR performed on a subset of bronchiolitis cases for clinical indications.
• LUS performed on all control infants.

Main Results:

• LUS scores positively correlated with clinical severity (r=0.62) and hospitalization length (r=0.42).
• Higher LUS scores were associated with increased need for oxygen therapy.
• LUS identified B-lines, subpleural consolidations, and pleural line abnormalities in bronchiolitis cases; controls showed no abnormalities.
• LUS pleural line abnormalities correlated with CXR-identified air trapping (r=0.55).

Conclusions:

• Lung ultrasound is a valuable tool for assessing bronchiolitis severity and course in infants.
• LUS findings can help predict the need for interventions like oxygen therapy.
• LUS demonstrates potential in evaluating air trapping, correlating with CXR findings.