5. Subject has swallowing disorders or chronic aspiration, prior esophageal surgery, or any other condition that would place the subject at risk during balloon placement.
6. Subject has history of pneumothorax secondary to lung bullae.
7. Subject is too cognitively impaired to give subjective ratings for visual analog scale
8. Subject has sensitivity or an allergy to lidocaine
9. Subject has known history of oxygen intolerance.
