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Electronic Nose Identification of Fasting and Non-fasting Breath Profiles

Electronic Nose Identification of Fasting and Non-fasting Breath Profiles

Status
Terminated
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT02419976
Acronym
Fast Breath
Enrollment
879
Registered
2015-04-17
Start date
2015-02-01
Completion date
2024-06-20
Last updated
2026-01-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Fasting

Brief summary

The investigators will study a noninvasive no risk process by which the investigators can quickly screen and assess for fasting and non-fasting states in individuals scheduled for routine endoscopy.

Detailed description

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.

Interventions

OTHERa breath analysis using the Aeonose

using the Aeonose per standard acquisition protocol which spans 15 minutes of which the individuals breaths normally through a sterile disposable mouthpiece with sterile disposable air filters for 5 minutes during signal acquisition while wearing a nose plug. This will be completed in the office setting prior to their endoscopic procedure. Following their scheduled standard of care endoscopic procedure the patient will be allowed to consume a standardized refreshment (such as juice or soda) prior to discharge from the post procedure area. These refreshments are already provided as standard care. The participant will return to the office setting and repeat the same breath analysis acquisition process that was done prior to the procedure.

DEVICEAeonose

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
SCREENING
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

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)

Design outcomes

Primary

MeasureTime frameDescription
Effectiveness of the Aeonose in Distinguishing a Fasting Versus Non-fasting Breath Profilebreath analysis obtained (approximately 10 minutes procedure)Exhaled Volatile Organic Compounds (VOCs) were collected by subject's breathing into a non-invasive breath analyzer (Aeonose) for 5 minutes by which through pattern recognition electronic changes can be identified in exhaled volatile organic compounds interfacing with an electronic sensor that creates an electronic signature, or smell-print that distinguishes the fasting and non-fasting states. The effectiveness of the Aeonose in distinguishing subjects in a fasting versus non-fasting state is represented by the device's sensitivity and specificity (ability to positively identify subjects who are in a fasting state versus non-fasting state).

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORCadman Leggett, MD

Mayo Clinic

Participant flow

Pre-assignment details

The protocol required classifying subjects as fasting or non-fasting, but only 185 fasting and 33 non-fasting subjects can be reported. As the data field in the study database designated to record fasting status was not implemented consistently throughout the study, fasting information was as a result not collected for the majority of enrolled subjects. The study team cannot retrospectively determine or report fasting status for the remaining subjects.

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
423 Participants
Age, Categorical
Between 18 and 65 years
456 Participants
Age, Continuous44 years
Ethnicity (NIH/OMB)
Hispanic or Latino
10 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
780 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
89 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
10 Participants
Race (NIH/OMB)
Black or African American
6 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
77 Participants
Race (NIH/OMB)
White
786 Participants
Region of Enrollment
United States
879 participants
Sex: Female, Male
Female
331 Participants
Sex: Female, Male
Male
548 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
0 / 0
other
Total, other adverse events
0 / 0
serious
Total, serious adverse events
0 / 0

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026