Continuous Glucose Monitoring (CGM) After Surgical Variations of the Roux-en-y Gastric Bypass

Continuous Glucose Monitoring (CGM) After Surgical Variations of the Roux-en-y Gastric Bypass: Comparing Tissue Glucose Levels Between Two Surgical Bypass Methods - a Prospective Study

Status

UNKNOWN

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04172116

Enrollment

Registered

2019-11-21

Start date

2020-01-31

Completion date

2021-01-31

Last updated

2019-11-21

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

Conditions

Continuous Glucose Monitoring, Hypoglycemia, Roux-en-y Gastric Bypass

Keywords

metabolic surgery

Brief summary

This study evaluates the difference in post prandial tissue glucose levels between two variation of Roux-en-Y Gastric bypass by continuous glucose monitoring.

Interventions

DEVICEContinuous glucose monitoring

see arm/group descriptions

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 75 Years

Healthy volunteers

Inclusion criteria

1. Patients who underwent bariatric-metabolic surgery at the Medical University of Vienna in the years 2012-2016 for the long and narrow pouch group 2. Patients who underwent bariatric-metabolic surgery at the Clinic of Hollabrunn in the years 2010- 2012 for the short and wide pouch group 3. Patients on oral medication for diabetes mellitus (for subgroup assessment) 4. Stable weight (not more than + 15kg from lowest weight postoperatively) 5. Stable BMI

Exclusion criteria

1. Unable to give written informed consent 2. Patients with methods other than RYGB 3. Reoperation within the observed period 4. Any intervention changing pouch size or diameter of the anastomosis after the initial operation 5. Known allergy to oral contrast agent 6. Any regular intake of medication interfering with blood glucose levels

Design outcomes

Primary

Measure	Time frame	Description
Tissue glucose levels	6 days	Difference in tissue glucose levels after the two variations of the Roux-en-y Gastric bypass

Secondary

Measure	Time frame	Description
tissue vs. blood glucose levels	1 day	Comparison of tissue and blood glucose levels

Countries

Austria

Contacts

Primary ContactGerhard Prager, MD

gerhard.prager@muw.ac.at0043 40400 56210

Backup ContactJulia Jedamzik, MD

julia.jedamzik@muw.ac.at0043 40400 56210

Outcome results

None listed

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