Related Experiment Video
Updated: Sep 11, 2025
05:10
Multidisciplinary Approach to Obesity Management: A Case Report
Published on: May 30, 2025
349
Common channel length and implications to the weight loss
Sérgio Santoro1, Filippe Camarotto Mota2,3, Caio Gustavo Gaspar de Aquino2
1Hospital Israelita Albert Einstein, Rua São Paulo Antigo 500, Apt 111B São Paulo, São Paulo, 05684-011, Brazil. sergio@santoro.med.br.
Updates in Surgery
|August 15, 2025
Summary
Sleeve gastrectomy with transit bipartition (SG+TB) using longer common channels (CC) reduced malabsorption symptoms like liquid stools. Weight loss remained similar across different CC lengths, suggesting improved ileal function.
Area of Science:
- Bariatric Surgery
- Gastroenterology
- Metabolic Surgery
Background:
- Obesity and metabolic syndrome are significant global health concerns requiring effective surgical interventions.
- Sleeve gastrectomy with transit bipartition (SG+TB) is a bariatric procedure aiming for weight loss and metabolic improvement.
- The length of the common channel (CC) in SG+TB may influence both weight loss and digestive side effects like malabsorption.
Purpose of the Study:
- To analyze the impact of varying common channel (CC) lengths in sleeve gastrectomy with transit bipartition (SG+TB) on weight loss and malabsorption.
- To compare outcomes of SG+TB with three distinct CC lengths: 80-100 cm, 120-150 cm, and 200-220 cm.
- To evaluate the relationship between CC length and the incidence of residual malabsorption symptoms, specifically liquid stools.
Main Methods:
- A retrospective analysis of 790 patients undergoing SG+TB between 2011 and 2021.
- Patients were categorized into three groups based on CC length (80-100 cm, 120-150 cm, 200-220 cm), with CC length being the primary variable.
- Outcomes, including percentage of excess body mass index loss (EBMIL%) and signals of residual malabsorption, were assessed at 3 years post-surgery.
Main Results:
- The longest CC (200-220 cm) significantly reduced the occurrence of liquid stools compared to shorter CCs.
- Despite fewer malabsorption signals with longer CCs, the percentage of excess body mass index loss (EBMIL%) was similar across all three groups.
- A slight, statistically significant improvement in EBMIL% was observed in the group with the longest CC (p < 0.05).
Conclusions:
- Elongating the ileal common channel (CC) in SG+TB to 200-220 cm effectively reduces malabsorption symptoms like liquid stools.
- Longer CC lengths in SG+TB do not compromise weight loss efficacy and may even slightly enhance it.
- The presence of bile in the ileum with longer CCs might improve intestinal endocrine activity, contributing to sustained weight loss.
Related Concept Videos
01:24Obesity
614
The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...
614
01:26Atherosclerosis III: Management
35
Management of atherosclerosis involves an integrated strategy encompassing pharmacological treatment, surgical interventions, lifestyle changes, and nutrition therapy to address the multifactorial nature of the disease.Pharmacological TherapyA cornerstone of atherosclerosis management is the use of pharmacological agents. Statins, such as atorvastatin, are pivotal in inhibiting HMG-CoA reductase, an enzyme that catalyzes an initial step in cholesterol synthesis in the liver. This reduction in...
35
01:23Lossless Lines
169
In electrical engineering, a lossless transmission line is characterized by a purely imaginary propagation constant and a resistive characteristic impedance. The ABCD parameters, which describe the relationship between the input and output voltages and currents, indicate an equivalent π circuit with an imaginary series impedance and a shunt admittance. This results in a transmission line that, when the product of the phase constant (beta) and the length of the line is less than pi,...
169
01:10Line Loss
298
The different configurations of source-load connections include wye (star) and delta connections. The relationship between line and phase voltages and currents varies depending on the configuration. When the source is supplying power, it is transmitted through the wires to the load, and during this transmission, some power is absorbed by the wires, leading to line loss.
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
Line loss impacts power delivery efficiency in a balanced three-phase circuit. The symmetry in such a circuit simplifies the...
298
01:18Reducing Line Loss
193
In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss...
193
01:26Stress Prevention and Stress Management Techniques IV
62
Stress often leads to unhealthy habits like smoking, excessive drinking, and overeating, which offer short-term relief but ultimately increase long-term health risks. These behaviors create a cycle that temporarily lowers stress levels but can result in severe long-term health consequences. Breaking these habits is essential to reduce the risk of chronic diseases and improve overall well-being. Three primary changes that support better health include quitting smoking, reducing alcohol intake,...
62