Clinical Scorecard: Long-Term Results of Single versus Dual Anastomosis in Duodenal Switch Procedures
At a Glance
Category
Detail
Condition
Morbid obesity requiring metabolic bariatric surgery
Key Mechanisms
Biliopancreatic diversion with duodenal switch (BPD/DS) and single anastomosis duodenoileal bypass with sleeve gastrectomy (SADI-S) achieve weight loss via restriction and malabsorption
Target Population
Patients with BMI ≥ 45 kg/m2 eligible for hypoabsorptive bariatric procedures
Care Setting
Specialized bariatric surgery centers with long-term follow-up capability
Key Highlights
BPD/DS is the most effective weight loss procedure but underutilized due to complexity and nutritional concerns.
SADI-S is a simplified alternative with a single anastomosis, shorter operative time, and potentially lower long-term nutritional risks.
Long-term outcomes compared include weight loss, resolution of obesity-related comorbidities, complication rates, nutritional deficiencies, and quality of life.
Guideline-Based Recommendations
Diagnosis
Eligibility for hypoabsorptive procedures requires BMI ≥ 45 kg/m2.
Preoperative assessment includes evaluation of nutritional status, GERD via endoscopy and impedance testing, and anatomical considerations.
Exclude patients with severe PPI-refractory GERD or prior metabolic bariatric/endoscopic procedures.
Management
Surgical technique selection based on risk of nutrient deficiencies, patient preference, and anatomical/technical factors.
SADI-S preferred for patients at higher nutritional risk or with compliance challenges due to longer common channel.
BPD/DS preferred in cases of severe GERD or pyloric dysfunction.
Monitoring & Follow-up
Scheduled follow-up visits up to 60 months post-surgery to monitor weight trajectory and comorbidity resolution.
Regular assessment of nutritional markers including total proteins, ferritin, iron, vitamin D, and calcium.
Quality of life evaluated using BAROS questionnaire at end of follow-up.
Monitor for short-term (≤90 days) and long-term (>90 days) complications using Clavien-Dindo classification.
Risks
Nutritional deficiencies remain a concern, particularly with BPD/DS due to shorter common channel.
Potential for increased glycemic variability and distinct endocrine responses post SADI-S.
Complications requiring acute intervention may occur and should be tracked long-term.
Patient & Prescribing Data
Patients undergoing SADI-S or BPD/DS for morbid obesity with BMI ≥ 45 kg/m2
SADI-S offers comparable weight loss and comorbidity resolution with potentially fewer nutritional complications and shorter operative time; patient selection should consider nutritional risk and anatomical factors.
Clinical Best Practices
Use shared decision-making incorporating patient preferences and clinical criteria for procedure choice.
Perform thorough preoperative nutritional and anatomical assessment to guide surgical approach.
Implement structured long-term follow-up protocols including nutritional monitoring and quality of life assessments.
Consider SADI-S as a staged or conversion option after suboptimal sleeve gastrectomy outcomes.
Monitor and manage GERD carefully, preferring BPD/DS in refractory cases.
