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Not yet recruitingNCT06346145MIMSUpdated Apr 3, 2024

Impact of Bariatric Surgery on Heart Disease Compared to Standard Care

An interventional study of Bariatric surgery and Standard care in Obesity, Morbid, Bariatric Surgery Candidate and Heart Diseases, sponsored by Danderyd Hospital. Not yet recruiting. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2024-04-03.

Sponsored by Danderyd Hospital · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
500
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

Obesity is associated with type 2 diabetes (T2D) and cardiovascular disease (CVD). Metabolic and bariatric surgery (MBS) has in several randomized controlled trials (RCT) been shown to be superior to best medical therapy in the treatment of T2D. In the area of CVD, RCT after MBS are lacking. It was recently demonstrated in a cohort study that MBS in patients with severe obesity and a previous myocardial infarction (MI) was associated with a 50% reduction in the risk of death and new MI. The aim of this proposal is to confirm this in a nationwide RCT. Using the nationwide SWEDEHEART database patients with severe obesity and a previous MI will be identified. They will be contacted and offered participation. After informed consent the patients will be randomized to MBS or optimized care (including visit with a cardiologist and optimization of secondary preventive measures and referral to dietician/physiotherapist). The primary outcome measure is a major cardiovascular adverse event (MACE). Secondary outcome measures include mortality, new MI, stroke, heart failure and atrial fibrillation. Tertiary outcome measures include health related quality of life and surgical complications. Patients will be followed in the nationwide metabolic surgery register SOReg, the national inpatient register, national cause of death register, the Swedish prescribed drug register, and the Swedish population register. If positive results these can be included in guidelines for MBS.

02

Conditions studied

  • Obesity, Morbid
  • Bariatric Surgery Candidate
  • Heart Diseases
03

In context

Obesity, Morbid

936 studies on the registry are indexed under Obesity, Morbid; 169 are open to participants now.

This study's planned enrollment of 500 is above the median of 60 across 599 interventional studies indexed under Obesity, Morbid.

Browse Obesity, Morbid studies →

Lead sponsor

Danderyd Hospital is the lead sponsor of 60 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • MI (as defined by the universal definition of MI) at least 1 year before inclusion.
  • BMI ≥35 kg/m2
  • Written informed consent obtained

Exclusion criteria

Exclusion Criteria:

  • Any condition that may influence the patient's ability to comply with study protocol.
  • Earlier MBS or operation for gastric or duodenal ulcer or reflux disease
  • Other condition that makes patient not suitable for MBS according to responsible surgeon and anesthesiologist
  • Unable to understand Swedish.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
500 participants (estimated)

Study arms

  • Active comparator
    Bariatric surgery

    Gastric bypass or gastric sleeve

    Procedure: Bariatric surgery

  • Active comparator
    Standard care

    Standard obesity treatment offered in Swedish regions

    Procedure: Standard care

Interventions

  • ProcedureBariatric surgery

    Type of surgery assigned by surgeon in consultation with patient

  • ProcedureStandard care

    Standard care can consist of dietary intervention, physiotherapy or drug treatment in accordance to the care given in the region of Sweden where the patient resides.

06

What researchers measure

Primary outcomes

  1. MACE defined as first occurrence of death (all-cause mortality), MI, stroke, myocardial revascularization (not related to MI), hospital admission because of heart failure or atrial fibrillation as a primary ICD diagnosis.

    Data will be obtained for the Swedish national patient registry and other national quality registries.

    Time frame: Through study completion, expected average of 6 years

Secondary outcomes

  1. Total event rate

    Based on events listed in the primary outcome measure. Data will be obtained for the Swedish national patient registry and other national quality registries.

    Time frame: Through study completion, expected average of 6 years

  2. All-cause mortality

    Data will be obtained for the Swedish national national quality registries.

    Time frame: Through study completion, expected average of 6 years

  3. Cardiovascular death

    Data will be obtained for the Swedish national national quality registries.

    Time frame: Through study completion, expected average of 6 years

  4. Remission of type 2 diabetes (T2D) and hypertension

    Number of patients in remission

    Time frame: Through study completion, expected average of 6 years

  5. Myocardial infarction

    Data will be obtained for the Swedish national national quality registries.

    Time frame: Through study completion, expected average of 6 years

  6. Stroke

    Data will be obtained for the Swedish national national quality registries.

    Time frame: Through study completion, expected average of 6 years

  7. Myocardial revascularization (not related to MI)

    Data will be obtained for the Swedish national national quality registries.

    Time frame: Through study completion, expected average of 6 years

  8. hospital admission because of heart failure as a primary ICD diagnosis.

    Data will be obtained for the Swedish national national quality registries.

    Time frame: Through study completion, expected average of 6 years

  9. hospital admission because of atrial fibrillation as a primary ICD diagnosis.

    Data will be obtained for the Swedish national national quality registries.

    Time frame: Through study completion, expected average of 6 years

Other outcomes

  1. Safety, i.e., no excess of severe complications (Clavien-Dindo ≥3b (a complication requiring intervention under general anesthesia or resulting in organ failure or death)) and long-term morbidity.

    Data will be obtained for the Swedish national patient registry and other national quality registries.

    Time frame: Through study completion, expected average of 6 years

  2. Body weight change

    Change in kg from baseline during long-term follow-up.

    Time frame: 5-year follow-up

  3. Change in quality of life

    Assessed by EQ-5D-5L questionnaire

    Time frame: 5-year follow-up

  4. All-cause hospitalizations

    Based on ICD 10 diagnosis in national patient registry and other national quality registries

    Time frame: Through study completion, expected average of 6 years

  5. Change in quality of life

    Assessed by RAND 36

    Time frame: 5-year follow-up

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Naslund E, Stenberg E, Hofmann R, Ottosson J, Sundbom M, Marsk R, Svensson P, Szummer K, Jernberg T. Association of Metabolic Surgery With Major Adverse Cardiovascular Outcomes in Patients With Previous Myocardial Infarction and Severe Obesity: A Nationwide Cohort Study. Circulation. 2021 Apr 13;143(15):1458-1467. doi: 10.1161/CIRCULATIONAHA.120.048585. Epub 2020 Oct 26. PubMed 33103469 ↗

Individual participant data

Plan to share: No — Data will not be shared openly at a repository since it contains personal data. Data will be made available upon request after ensuring compliance with relevant legislation and Karolinska Institutet guidelines.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 3, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06346145
Lead sponsor
Danderyd Hospital
Collaborators
Karolinska Institutet, The 21 healthcare regions in Sweden
Responsible party
Erik Näslund (Professor, Danderyd Hospital) — Principal investigator
First posted
Apr 3, 2024
Start date
May 1, 2024 (estimated)
Primary completion
May 1, 2028 (estimated)
Completion
May 1, 2030 (estimated)
Last update
Apr 3, 2024

Study contacts

Erik Näslund, MD, PhD
Contact
Erik.Naslund@ki.se
46812355017
Erik Näslund, MD, PhD
principal investigator · Karolinska Institutet/Danderyd hospital

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Mar 2024. You cannot join it, but the record below documents what was studied.

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