Laparoscopic Gastric Bypass for Type 2 Diabetes Mellitus With Body Mass Index (BMI) < 35

2014-08-27 03:18:32 | BioPortfolio


The aim of this study is to evaluate the effect of Roux-en-y gastric bypass (RYGB) in controlling diabetes in subjects with mild obesity (BMI 26-35). The primary endpoint will be the reduction of HbA1c (< 7%), a standard measure of diabetes control; the secondary endpoints will be changes blood sugar , vitamin levels, insulin, c-peptide, and lipids levels, as well as retinal eye examinations, urinalysis to assess kidney function, carotid ultrasound as a marker of cardiovascular function, and alterations in diabetic medications. Fifty subjects with medically documented type 2 Diabetes Mellitus (T2DM) with BMIs between 26 and 35 will undergo standard laparoscopic RYGB. Prior and after surgery, the subjects will undergo a clinical evaluation in regard to the primary and secondary endpoints listed. The pre-surgery evaluation is directed toward establishing the existence of diabetes related complications prior to surgery. After surgery subjects will be closely monitored for complications and required changes in their diabetes management. Repeat assessments will be made at 1, 3, 6, and 12 months and at two years.


The primary endpoint will be the reduction of HbA1c and secondary endpoints will be multiple associated parameters as listed below. A group of 50 subjects with medically documented T2DM and BMI of 26-35 will undergo standard laparoscopic RYGB. Prior to surgery, the subjects will undergo the standard pre-operative work up required for conventional bariatric surgery. This includes full history and physical exam, medical/cardiac clearances as needed, nutrition consultation and a gastrointestinal consultation for upper endoscopy. After thorough explanation an approved informed consent will be signed. Baseline parameters, as listed below, will be measured for each subject to identify possible complications of diabetes prior to the surgical intervention..

After surgery perioperative complications will be monitored and required modifications of diabetes management advised. Followed up measurements at 1, 3, 6, 12, and 24 months is consistent with standard clinical practice guidelines. Data analysis will be ongoing to observe the effects of the surgical intervention on glucose homeostasis.

- Baseline parameters

- History and Physical Exam

- Weight/BMI/ body composition with the Tanita 310.

- Waist Circumference

- Blood Pressure


- HbA1c

- Fasting glucose

- Vitamin B6, B12, Folate,and Iron status

- Lipid Profile -total cholesterol, HDL, LDL, triglyceride

- Fasting Insulin and C-peptide

- Stimulated C-peptide


- Retinal exam

- Urinalysis (assess for proteinuria and microalbuminuria)

- Comprehensive foot exam

- Medications and dosage

- Quality of Life Score (SF-36)

- Carotid ultrasound (intima-media thickness)


4 Weeks:

- Physical Examination, wound check, Body weight, BMI,

- Glucose Diary (pre and postprandial glucose levels as required)

- Insulin and C-peptide

- Lipid profile

- Medication use

3 Months, 6 months,

Same as above plus:

- HbA1c

- Vitamin levels and iron status

- Retinal exam

- Annually the baseline measurements will be repeated

Study Design

Allocation: Non-Randomized, Control: Active Control, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment


Type 2 Diabetes


Gastric bypass for diabetic patients <35 BMI


Weill Cornell Medical College New York Prysbyterian Hosptial
New York
New York
United States




Weill Medical College of Cornell University

Results (where available)

View Results


Published on BioPortfolio: 2014-08-27T03:18:32-0400

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Medical and Biotech [MESH] Definitions

A subclass of DIABETES MELLITUS that is not INSULIN-responsive or dependent (NIDDM). It is characterized initially by INSULIN RESISTANCE and HYPERINSULINEMIA; and eventually by GLUCOSE INTOLERANCE; HYPERGLYCEMIA; and overt diabetes. Type II diabetes mellitus is no longer considered a disease exclusively found in adults. Patients seldom develop KETOSIS but often exhibit OBESITY.

Conditions or pathological processes associated with the disease of diabetes mellitus. Due to the impaired control of BLOOD GLUCOSE level in diabetic patients, pathological processes develop in numerous tissues and organs including the EYE, the KIDNEY, the BLOOD VESSELS, and the NERVE TISSUE.

A subtype of DIABETES MELLITUS that is characterized by INSULIN deficiency. It is manifested by the sudden onset of severe HYPERGLYCEMIA, rapid progression to DIABETIC KETOACIDOSIS, and DEATH unless treated with insulin. The disease may occur at any age, but is most common in childhood or adolescence.

A life-threatening complication of diabetes mellitus, primarily of TYPE 1 DIABETES MELLITUS with severe INSULIN deficiency and extreme HYPERGLYCEMIA. It is characterized by excessive LIPOLYSIS, oxidation of FATTY ACIDS, production of KETONE BODIES, a sweet smell to the breath (KETOSIS;) DEHYDRATION; and depressed consciousness leading to COMA.

Peripheral, autonomic, and cranial nerve disorders that are associated with DIABETES MELLITUS. These conditions usually result from diabetic microvascular injury involving small blood vessels that supply nerves (VASA NERVORUM). Relatively common conditions which may be associated with diabetic neuropathy include third nerve palsy (see OCULOMOTOR NERVE DISEASES); MONONEUROPATHY; mononeuropathy multiplex; diabetic amyotrophy; a painful POLYNEUROPATHY; autonomic neuropathy; and thoracoabdominal neuropathy. (From Adams et al., Principles of Neurology, 6th ed, p1325)

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