OCT Guided Trans Nasal Imaging of the Small Intestine in Adults

Exclusion Criteria

• •Participants with a history of upper respiratory disease or surgery
• •Pregnant women with high-risk pregnancies such as history of: hyperemesis gravidarum, HIV, severe anemia or any other high-risk pregnancy conditions at the discretion of the subject's physician and the PI
• •Participants with a history of upper gastrointestinal surgery
• •Pregnant women with Type 1 diabetes
• •Pregnant women with Type 2 diabetes on medication and gestational diabetes requiring medication
• •Pregnant women with gestational thrombocytopenia
• •Participants with upper respiratory infection at least 7 days prior to the procedure
• •Pariticipants with any contraindications to the placement of the NJ tube including deviated septum or any other anatomical abnormalities of the nasopharynx or upper gastrointestinal region, history of trans-sphenoidal surgery, facial or cranial trauma and fractures, chronic sinusitis, esophageal strictures, varices etc.
• •Participants on medications that delay gastric emptying.
• •Participants on drugs which impair clotting like anticoagulants and antiplatelet drugs, NSAIDS, history of bleeding disorders.
• •Participants using nasal steroids or any steroids for environmental allergies.