The pleural line in lung ultrasound refers to the bright, hyperechoic line seen at the interface between the chest wall and the lung. This line represents the visceral and parietal pleura, which normally slide against each other during respiration. Its appearance and movement are crucial for diagnosing various lung pathologies, particularly pneumothorax, where the absence of lung sliding or the presence of B-lines can indicate air in the pleural space.
Accurate identification of the pleural line and its dynamic characteristics is fundamental for point-of-care ultrasound (POCUS) in respiratory assessment. Changes in its normal smooth, continuous appearance, such as irregularity or fragmentation, can also suggest underlying lung conditions like interstitial syndromes or effusions, making it a key diagnostic marker in pulmonary ultrasound.
