Skip to content

SH Dr. Chen Gastric Bypass Study

Effect of Vagus Nerve Preservation During Gastric Bypass on Gastrin Level and Marginal Ulcer Formation

Status
Active, not recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05357443
Enrollment
50
Registered
2022-05-02
Start date
2022-08-31
Completion date
2027-09-30
Last updated
2025-09-30

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

Conditions

Gastric Bypass

Brief summary

Evaluation of serum gastrin levels and their effect on marginal ulcer formation.

Detailed description

Prospective, randomized, interventional trial. Participants will be randomized to one of two surgical techniques, either with transection of the vagal nerves, or without. Outcomes including compare marginal ulcer rates will be compared using serum gastrin levels before and after surgery and gastric pH during surgery.

Interventions

PROCEDUREGastric bypass with transection of vagal nerves

Vagal nerve interruption above the level of the stomach is a known treatment for complicated peptic ulcer disease. It is not commonly performed during routine gastric bypass. The vagi are, however, interrupted part-way down the stomach to create the gastric pouch. This is the pars flaccida technique.

PROCEDUREGastric bypass without transection of vagal nerves

Dissection between the neurovascular bundle and the stomach, spareing the vagus nerves. This is the perigastric technique.

Sponsors

National Institutes of Health (NIH)
CollaboratorNIH
Sanford Health
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Age 18 years and older * Diagnosis of obesity or disorder of metabolism undergoing routine gastric bypass surgical intervention * Capable of giving signed informed consent.

Exclusion criteria

* Under 18 years of age * Ineligible for gastric bypass surgery * Pregnant women or women actively seeking to become pregnant.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of Marginal UlcerFrom surgical intervention to five years after surgeryNumber of participants with a change in serum gastrin levels compared pre- and post-surgery.

Countries

United States

Outcome results

None listed

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