Electronic Nose Identification of Fasting and Non-fasting Breath Profiles

The investigators will study a noninvasive no risk process by which we can quickly screen and
assess for fasting and non-fasting states in individuals scheduled for routine endoscopy. In
non-fasting individuals, the risk of a sedation related complication such as aspiration
increases and often the procedure must be aborted and repeated on another day following more
prolonged fasting and medication administration. This adds to increased cost and delay to
patient care.

Inclusion Criteria:

- Inclusion Criteria:

1. Adult (18+) patient undergoing scheduled elective outpatient upper endoscopy

2. Willing and able to consent to research protocol

3. Fasting as required per routine instruction for upper endoscopy

4. Able to breath for approximately 10 minutes pre and post procedure into the
Aeonose device with a nose-plug on

5. Able to consume standard refreshments post procedure during recovery per routine
endoscopic area policy

Exclusion Criteria:

1. Non-fasting per protocol, or known to have had food or drink outside of routine
protocol

2. < 18 years of age

3. Unable or unwilling to consent to research protocol

4. Inability to tolerate Aeonose breathing (such as those with claustrophobia,
anxiety, nasal trauma, etc.)

5. Unable to consume refreshment post procedurally

6. Unable to repeat Aeonose measurement post-procedurally due to tolerance or
medical indication (such as instructed to remain fasting)