Effectiveness of Continuous Negative External Pressure in Preventing Upper Airway Impairment During Routine Colonoscopy

Exclusion Criteria

• •Presence of severe cardiopulmonary or neurologic disease as determined by the investigator
• •History of vascular fragility associated with cutaneous pressure
• •History of hypersensitivity to silicone
• •Inability to properly fit cNEP collar to the subject
• •The presence of excessive facial hair in the region where the cNEP collar is positioned
• •Known carotid vascular disease, previous major neck surgery or radiation therapy to the cervical region
• •Presence of anatomical abnormalities in the neck or pharyngeal region (such as enlarged tonsils)
• •Inability to provide informed consent