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Pharmacokinetics in Morbid Obesity After Bariatric Surgery

2014-08-27 03:15:12 | BioPortfolio

Summary

Morbid obesity (MO) is associated with several disorders such as hypertension, type 2 diabetes, dyslipemia and degenerative arthropathy that require pharmacological treatment. Drug bioavailability and metabolism in patients with MO is altered compared to population controls. Bariatric surgery is the gold standard treatment for MO when conventional therapy fails.

Bariatric surgery techniques can modify drug absorption in MO patients. These modifications depend on the drug absorption characteristics and on the bariatric surgery technique used. The changes in weight and body composition caused by BS at middle term can alter drug bioavailability and metabolism. The kinetics of the "normalization" process in patients with MO after bariatric surgery is unknown

Objectives. To analyze the changes in drug metabolism and pharmacokinetics. To establish drug dosing criteria in the post-intervention period in patients with MO after bariatric surgery. To determine the relationship between changes in drug bioavailability and metabolism in MO after bariatric surgery (longitudinal gastrectomy and Y-roux gastric by-pass).

Description

Patients and methods. A prospective study of two cohorts of patients in a program of bariatric surgery (gastric by-pass and sleeve gastrectomy). Study "before and after".

Evaluations. Study on drug metabolism and pharmacokinetics using a modified "karolinska cocktail" (dextromethorphan, caffeine, losartan, omeprazole and paracetamol) before bariatric surgery and at 4 weeks and 6 months post-intervention.

Study Design

Control: Active Control, Endpoint Classification: Pharmacokinetics Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Basic Science

Conditions

Morbid Obesity

Intervention

Surgery

Location

Hospital del Mar
Barcelona
Spain
08003

Status

Recruiting

Source

Fundacion IMIM

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:15:12-0400

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Medical and Biotech [MESH] Definitions

The condition of weighing two, three, or more times the ideal weight, so called because it is associated with many serious and life-threatening disorders. In the BODY MASS INDEX, morbid obesity is defined as having a BMI greater than 40.0 kg/m2.

Surgical procedures aimed at producing major WEIGHT REDUCTION in patients with MORBID OBESITY.

A status with BODY WEIGHT that is grossly above the acceptable or desirable weight, usually due to accumulation of excess FATS in the body. The standards may vary with age, sex, genetic or cultural background. In the BODY MASS INDEX, a BMI greater than 30.0 kg/m2 is considered obese, and a BMI greater than 40.0 kg/m2 is considered morbidly obese (MORBID OBESITY).

An inflatable device implanted in the stomach as an adjunct to therapy of morbid obesity. Specific types include the silicone Garren-Edwards Gastric Bubble (GEGB), approved by the FDA in 1985, and the Ballobes Balloon.

A procedure consisting of the SURGICAL ANASTOMOSIS of the proximal part of the JEJUNUM to the distal portion of the ILEUM, so as to bypass the nutrient-absorptive segment of the SMALL INTESTINE. Due to the severe malnutrition and life-threatening metabolic complications, this method is no longer used to treat MORBID OBESITY.

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