Obesity

Cardiovascular Outcomes and Mortality After Bariatric Surgery in Patients With Nonalcoholic Fatty Liver Disease and Obesity

JAMA Netw OpenPublished Retrospective cohort study

Authors' conclusion

These findings suggest that BS was significantly associated with lower risk of major adverse cardiovascular events and all-cause mortality in patients with NAFLD and obesity.

Study context

Population
Adults with body mass index (BMI) ≥35 and nonalcoholic fatty liver disease (NAFLD) (without cirrhosis); Bariatric surgery (BS) between January 1, 2005, and December 31, 2021matched cohort
Participants
4,687 vs 4,687
Exposure
Bariatric surgery vs nonsurgical care
  • BSn = 4,687
  • non-BSn = 4,687reference
Outcome
First incidence of new-onset heart failure (HF); composite cardiovascular events (unstable angina, MI or revascularization); composite cerebrovascular disease; composite of coronary artery procedures or surgeries
Methodological detailspopulation-based, 1:1 propensity-score matched, TriNetX platform, Follow-up ended August 31, 2022; data analysed September 2022
  • Population-based
  • 1:1 propensity-score matched
  • TriNetX platform
  • Follow-up ended August 31, 2022; data analysed September 2022

Main finding

As reported in the abstract

Primary outcomes
BS vs non-BSHazard ratio (95% CI)
New-onset HF
0.60(0.51–0.70)
Cardiovascular events
0.53(0.44–0.65)
Cerebrovascular events
0.59(0.51–0.69)
Coronary artery interventions
0.47(0.35–0.63)

Observational data: associations, not effects.

Further findings

OutcomeHR (95% CI)
All-cause mortality0.56 (0.42–0.74)

Outcomes by follow-up duration · 1, 3, 5, and 7 years

Outcomes consistent at follow-up of 1, 3, 5 and 7 years

Original publication

Cardiovascular Outcomes and Mortality After Bariatric Surgery in Patients With Nonalcoholic Fatty Liver Disease and Obesity. JAMA Netw Open. Published 3 April 2023. doi:10.1001/jamanetworkopen.2023.7188

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