Pneumothorax

No pneumothorax is seen in this video.

Steps for Image Acquisition:

Probe Placement: Place on the most anterior part of the chest. In supine patients, air rises so the pneumothorax is most easily detected anteriorly
Visualize the Pleura: Adjust depth to visualize the pleural line just beneath the ribs
Assess for Lung Sliding: Observe the pleural line for lung sliding during respiration
Scan Multiple Zones: Assess for lung sliding in 3 locations per hemithorax. Move progressively down the chest to examine additional zones, including lateral areas
Optional: Use M-Mode to further assess:
- Normal lung will show a seashore sign.
- Pneumothorax will demonstrate a barcode sign

Absent lung sliding: No pleural line motion ⚠️ Not specific to a pneumothorax (can be seen in ARDS, subcut emphysema, mainstem intubation, probe over bulla).
Lung point: Transition where the collapsed lung contacts the chest wall, highly specific for pneumothorax

Presence of lung sliding: Indicates the visceral and parietal pleura are in contact, ruling out pneumothorax at that area
Presence of B-lines: Vertical artifacts arising from the pleural line, excluding pneumothorax at that area