Pleura effusion

Lung ultrasound can effectively identify or exclude pleural effusion at the bedside. Key signs to evaluate include the presence of the “spine sign,” visible fluid, and the “lung curtain.” These findings help confirm or rule out pleural fluid collection.

Presence of the “spine sign,” where the spine is visible above the diaphragm.

Visible anechoic (black) fluid collection in the pleural space.

Presence of the “lung curtain,” where lung tissue obscures the spine above the diaphragm.

No visible black border above the diaphragm indicating fluid.

Ensure proper patient positioning during ultrasound to optimize the evaluation of these signs.