Clarius Classroom


Dr. Oron Frenkel, MD

Normal pleural sliding is absent identified between the rib shadows. Corresponding M-mode shows the “bar code sign” where there is no change from superficial to deep to the pleural line, suggesting free air and lack of lung sliding. While suggestive of pneumothorax, this finding can also be been in bleb diseases or from pleural scarring.

Specialties: EMED, EMS, Primary Care
Applications: Lung

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