Respiratory Quotient in Post Roux-en-Y Gastric Bypass Patients

Gastrocirurgia, Brazil69 enrolled

Overview

Through the values of respiratory quotient (RQ) it is possible to estimate the utilization of energy substrates by the body, or if there is a higher or lower fat oxidation. Experimental and clinical studies have shown that after Roux-en-Y Gastric Bypass (RYGBP) there is a decrease in the values of RQ, which may be associated with increased lipid oxidation in the postoperative period. Diet Induced Thermogenesis (DIT) is an important part of Total Energy Expenditure. We would like to know how it functions among RYGBP patients. The purpose of this study is to evaluate the RQ and DIT of patients in the post operative phase and compare the result with a control group consisting of morbid obese population.

Study Type

OBSERVATIONAL

Enrollment

Conditions

Morbid Obesity

Interventions

breakfast (a chicken sandwich with juice)OTHER

patients received a breakfast after de initial measurement

Eligibility

Medical Language ↔ Plain English

Inclusion Criteria (bariatric patients post-op) * With more than 1 year after surgery * Consent given to participate Exclusion Criteria: * Pregnant women * Malnourished patients (anemia) * Tiroid disorders without treatment

Locations (1)

Gastrocirurgia de Brasilia

Brasília, Federal District, Brazil

Outcomes

Primary Outcomes

Diet Induced Thermogenesis

To examine the possible changes in the thermic effect of food, the patients received a standard meal. They then repeated the test 20 minutes after eating to obtain a reading of the metabolic rate by considering the DIT and RQ in the postprandial period. DIT was calculated as the difference between post prandial metabolic rate and RMR.

Time frame: 20min after standard meal

Data from ClinicalTrials.gov

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