An interventional study of Duodenal Switch in Obesity, Surgery and Metabolic Syndrome, sponsored by Värmland County Council, Sweden. Active, not recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-02-18.
Sponsored by Värmland County Council, Sweden · Not applicable, Interventional, and Treatment
The aim of the Torsby I Trial is to identify differences and similarities between a standard duodenal switch (DS) and a single-anastomosis duodeno-ileostomy (SADI) regarding effect on weight, comorbidities and malnutrition.
6,296 studies on the registry are indexed under Obesity; 1,692 are open to participants now.
This study's enrollment of 56 is below the median of 78 across 4,878 interventional studies indexed under Obesity.
Browse Obesity studies →Värmland County Council, Sweden is the lead sponsor of 9 studies on the registry; 3 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
Standard duodenal switch: 1. Sleeve gastrectomy over a 35 Fr bougie 2. Division of the duodenum 2-3 cm distally of the pylorus 3. Measurement of the small bowel. 100 cm common channel. 150 cm alimentary limb. 4. Duodenoileostomy completely handsewn with 250 cm distance to the ileocecal valve. 5. Entero-entero-anastomosis linear stapled and handsewn. 6. Division between the two anastomosis. 7. Closure of the mesenteric defects.
Procedure: Duodenal Switch
Duodenal switch with Single anastomosis duodeno-ileostomy: 1. Sleeve gastrectomy over a 35 Fr bougie 2. Division of the duodenum 2-3 cm distally of the pylorus 3. Measurement of the small bowel. 250 cm alimentary limb/common channel. 4. Duodenoileostomy completely handsewn with 250 cm distance to the ileocecal valve. 5. Closure of the mesenteric defects.
Procedure: Duodenal Switch
Change of weight (kg)
Change of weight in kg with calculation of the relative weight-loss under the follow-up
Time frame: January 2024 (5 yr follow-up) and january 2029 (10 yr follow-up)
Early complications
Rate of minor and major complications
Time frame: Up to 10 years after operation
Alterations in comorbidities (hypertension)
Changes of the metabolic profile (hypertension).
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Alterations in comorbidities (diabetes)
Changes of the metabolic profile (diabetes)
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Alterations in comorbidities (sleeping apnea)
Changes of the metabolic profile (sleeping apnea)
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Alterations in comorbidities (hyperlipideamia)
Changes of the metabolic profile (hyperlipidemia)
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (protein)
Changes of levels of protein
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (vitamin A)
Changes of levels of vitamin A
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (vitamin D)
Changes of levels of vitamin D
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (vitamin B12)
Changes of levels of vitamin B12
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (vitamin B6)
Changes of levels of vitamin B6
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (vitamin B1)
Changes of levels of vitamin B1
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (vitamin E)
Changes of levels of vitamin E
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Development of malnutrition (calcium)
Changes of levels of calcium
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Late minor complications
Rate of minor complications (Clavien Dindo \< IIIB)
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
Late major complications
Rate of major complications (Clavien Dindo \> and = IIIB)
Time frame: January 2021 (2 yr follow-up), january 2024 (5 yr follow-up), january 2029 (10 yr follow-up)
No study locations are listed for this record.
Plan to share: No
This study is active, not recruiting, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.
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Värmland County Council, Sweden