The nasopharyngeal airway continues to open in a cephalocaudal fashion. f: The bolus has disappeared into the esophagus. All structures have returned to the open position: the normal contours of ...
With this technique nearly all causes of airway obstruction can be diagnosed. Disorders which are more difficult to diagnose endoscopically are OSAS, gastro-esophageal reflux disease (GERD), and ...
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