Campbell’s sign or Tracheal Descent in Longstanding COPD Patients with longstanding COPD may show downward displacement of the trachea during inspiration. Dr. Sa'ad Lahri @slahri7 via @TBHMedicine #Campbells #sign #Tracheal #Descent #COPD #clinical #video #trachea #neck #physicalexam #pulmonary #respiratory