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Effects of GLP-1 Agonists on Gastric Volume

Ultrasound Assessment of Preoperative Gastric Volume in Fasted, Diabetic Surgical Patients: A Prospective Observational Cohort Study on the Effects of GLP-1 Agonists on Gastric Emptying

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05854979
Enrollment
210
Registered
2023-05-11
Start date
2023-08-09
Completion date
2024-04-15
Last updated
2024-04-25

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

Conditions

Diabetes, Gastric Content Aspiration, GLP-1, Glucagon-like Peptide 1

Brief summary

This study will enroll patients ages 18 and over who have a diagnosis of diabetes, are undergoing an elective surgery under general anesthesia and 1) are taking a GLP-1 receptor agonist medication, or 2) not taking a GLP-1 receptor agonist medication. The patients will have a gastric ultrasound prior to surgery to measure any retained gastric contents. The primary goal is to assess the effect of subcutaneous injectable GLP-1 agonists on preoperative gastric volume in fasted, diabetic surgical patients.

Interventions

DIAGNOSTIC_TESTGastric Ultrasound

A gastric ultrasound will be completed on every patient and administered the same way in each arm. The patient will be placed in supine position. A curvilinear ultrasound probe will be placed on the sagittal plane below the xiphoid process. The probe will then slide along the costal margin to the right until the gastric antrum is identified. At this point, the ultrasound image will be obtained, and appropriate measurements will be taken. The patient will be placed in the right lateral decubitus position and the above procedure will be repeated.

Sponsors

Medical University of South Carolina
Lead SponsorOTHER

Study design

Observational model
CASE_CONTROL
Time perspective
PROSPECTIVE

Eligibility

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

Inclusion criteria

* Age greater than or equal to 18 years old * Diagnosed with diabetes (listed on medical record, Hgb A1C greater than or equal to 6.5%, fasting blood glucose greater than or equal to 126mg/dL, and/or on medical treatment for diabetes) * One of the following groups: * Taking a GLP-1 Medication * Not taking a GLP-1 Medication * ASA Physical Classification Status 1-3 * Scheduled for elective surgery under general anesthesia * Appropriately fasted per ASA Fasting Guidelines 201712

Exclusion criteria

* BMI greater than 40 * Previous gastric/esophageal surgery * Abnormal gastric anatomy * Pregnancy * Inability or unwillingness of subject to give informed consent * Non-English Speaking

Design outcomes

Primary

MeasureTime frameDescription
Gastric Volume in RLD PositionFrom time of enrollment until the start of surgery, assessed up to 4 weeksThe gastric volume will be calculated using a validated formula.

Secondary

MeasureTime frame
Gastric antrum CSA in RLD positionFrom time of enrollment until the start of surgery, assessed up to 4 weeks
Perlas antral gradeFrom time of enrollment until the start of surgery, assessed up to 4 weeks
Incidence of aspirationFrom the time surgery begins until the end of scheduled surgery, assessed up to 24 hours

Countries

United States

Outcome results

None listed

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